2021 Pacific typhoon season: Difference between revisions

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<!-- Meteorological history -->
At 12:00 UTC on February 16, the JMA reported that a tropical depression had formed.<ref>{{Cite web|url= https://tgftp.nws.noaa.gov/data/raw/ww/wwjp25.rjtd..txt|title=WWJP25 RJTD 161200|website=Japan Meteorological Agency|date=February 16, 2021|access-date=February 16, 2021}}</ref> The JTWC issued a Tropical Cyclone Formation Alert on the system just two hours later.<ref>{{Cite web|url= https://www.metoc.navy.mil/jtwc/products/wp9121web.txt|title=Tropical Cyclone Formation Alert (Invest 91W)|website=Joint Typhoon Warning Center|date=February 16, 2021|access-date=February 16, 2021|archive-url=https://archive.vn/ycG0m|archive-date=February 16, 2021}}</ref> Later that day, the [[PAGASA]] began to issue advisories for the system, which the agency declared a tropical depression.<ref>{{Cite PAGASA|date=2021-02-16|type=tca|no=1|category=TD|url=http://pubfiles.pagasa.dost.gov.ph/tamss/weather/tca/TCA%231.pdf|archive-url=https://archive.org/download/pagasa-21-TC01/PAGASA_21-TC01_Auring_TCA%2301.pdf}}</ref> At 00:00 UTC on February 17, the system moved into the [[Philippine Area of Responsibility]], earning the name ''Auring'' from the PAGASA. This made Auring the first storm of the season to be named by the PAGASA.<ref>{{Cite PAGASA|date=2021-02-17|name=Auring|type=swb|no=1|category=TD|url=https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin_auring.pdf|archive-url=https://archive.org/download/pagasa-21-TC01/PAGASA_21-TC01_Auring_SWB%2301.pdf}}</ref> At 09:00 UTC February 17, the JTWC upgraded the system into a tropical depression, giving it the designation ''01W''.<ref>{{Cite JTWC|date=2021-02-17|type=warn|category=TD|designation=01W|no=1|name=One|url=https://www.metoc.navy.mil/jtwc/products/wp0121web.txt|archive-url=https://wiki.chlod.net/jtwc/text/2021-02-17-0810-wp0121web.txt}}</ref> On February 18, as it neared the [[Philippines]], the JTWC and the PAGASA both upgraded the system to a tropical storm.<ref>{{Cite JTWC|date=2021-02-18|type=warn|category=TS|designation=01W|no=4|name=One|url=https://www.metoc.navy.mil/jtwc/products/wp0121web.txt|archive-url=https://wiki.chlod.net/jtwc/text/2021-02-18-0200-wp0121web.txt}}</ref><ref>{{Cite PAGASA|date=2021-02-18|name=Auring|type=swb|no=3|category=TS|url=https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin_auring.pdf|archive-url=https://archive.org/download/pagasa-21-TC01/PAGASA_21-TC01_Auring_SWB%2303.pdf}}</ref> The JMA followed suit soon after, naming the storm ''Dujuan''.<ref>{{Cite web|date=18 February 2021|title=Tropical Cyclone Information|url=https://www.jma.go.jp/en/typh/2101.html|url-status=dead|archive-url=https://archive.vn/NLucp|archive-date=18 February 2021|access-date=18 February 2021|website=[[Japan Meteorological Agency]]}}</ref> At 03:00 UTC on February 19, the PAGASA upgraded Dujuan into a severe tropical storm; however, this period was short-lived, as the agency downgraded Dujuan back into a tropical storm 6 hours later.<ref>{{Cite PAGASA|date=2021-02-19|name=Auring|intl_name=Dujuan|type=swb|no=6|category=STS|url=https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin/SWB%236_auring.pdf|archive-url=https://archive.org/download/pagasa-21-TC01/PAGASA_21-TC01_Auring_SWB%2306.pdf}}</ref><ref>{{Cite PAGASA|date=2021-02-19|name=Auring|intl_name=Dujuan|type=swb|no=7|category=TS|url=https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin_auring.pdf|archive-url=https://archive.org/download/pagasa-21-TC01/PAGASA_21-TC01_Auring_SWB%2307.pdf}}</ref> On February 20, the storm significantly weakened as it made a small turn to the southwest due to unfavorable conditions caused by high vertical wind shear, causing it to be downgraded by the JTWC into a tropical depression.<ref>{{Cite JTWC|date=2021-02-20|type=prog|category=TD|designation=01W|no=13|name=Dujuan|url=https://www.metoc.navy.mil/jtwc/products/wp0121prog.txt|archive-url=https://wiki.chlod.net/jtwc/prog/2021-02-20-0910-wp0121prog.txt}}</ref> The next day, as the storm began tracking northwestward yet again, vertical wind shear in Dujuan's environment had decreased allowing the storm to restrengthen, with the JTWC redeclaring the system as a tropical storm.<ref>{{Cite JTWC|date=2021-02-21|type=prog|category=TS|designation=01W|no=17|name=Dujuan|url=https://www.metoc.navy.mil/jtwc/products/wp0121prog.txt|archive-url=https://wiki.chlod.net/jtwc/prog/2021-02-21-0830-wp0121prog.txt}}</ref> By February 22, the JMA, the JTWC, and the PAGASA had downgraded the system to a tropical depression after the system's low-level circulation center (LLCC) had weakened prior to landfall.<ref>{{Cite web|date=2021-02-22|title=Tropical Cyclone Information|url=https://www.jma.go.jp/en/typh/2101.html|url-status=dead|archive-url=https://archive.vn/hqLkb|archive-date=2021-02-22|access-date=2021-02-22|website=[[Japan Meteorological Agency]]}}</ref><ref>{{Cite JTWC|date=2021-02-22|type=prog|category=TD|designation=01W|no=19|name=Dujuan|url=https://www.metoc.navy.mil/jtwc/products/wp0121prog.txt|archive-url=https://wiki.chlod.net/jtwc/prog/2021-02-21-2140-wp0121prog.txt}}</ref><ref>{{Cite PAGASA|date=2021-02-21|name=Auring|intl_name=Dujuan|type=swb|no=19|category=TD|url=https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin/SWB%2319_auring.pdf|archive-url=https://archive.org/download/pagasa-21-TC01/PAGASA_21-TC01_Auring_SWB%2319.pdf}}</ref>
At 12:00 UTC on February 16, the JMA reported that a tropical depression had formed.<ref>{{Cite web|url= https://tgftp.nws.noaa.gov/data/raw/ww/wwjp25.rjtd..txt|title=WWJP25 RJTD 161200|website=Japan Meteorological Agency|date=February 16, 2021|access-date=February 16, 2021}}</ref> The JTWC issued a Tropical Cyclone Formation Alert on the system just two hours later.<ref>{{Cite web|url= https://www.metoc.navy.mil/jtwc/products/wp9121web.txt|title=Tropical Cyclone Formation Alert (Invest 91W)|website=Joint Typhoon Warning Center|date=February 16, 2021|access-date=February 16, 2021|archive-url=https://archive.vn/ycG0m|archive-date=February 16, 2021}}</ref> Later that day, the [[PAGASA]] began to issue advisories for the system, which the agency declared a tropical depression.<ref>{{Cite PAGASA|date=2021-02-16|type=tca|no=1|category=TD|url=http://pubfiles.pagasa.dost.gov.ph/tamss/weather/tca/TCA%231.pdf|archive-url=https://archive.org/download/pagasa-21-TC01/PAGASA_21-TC01_Auring_TCA%2301.pdf}}</ref> At 00:00 UTC on February 17, the system moved into the [[Philippine Area of Responsibility]], earning the name ''Auring'' from the PAGASA. This made Auring the first storm of the season to be named by the PAGASA.<ref>{{Cite PAGASA|date=2021-02-17|name=Auring|type=swb|no=1|category=TD|url=https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin_auring.pdf|archive-url=https://archive.org/download/pagasa-21-TC01/PAGASA_21-TC01_Auring_SWB%2301.pdf}}</ref> At 09:00 UTC February 17, the JTWC upgraded the system into a tropical depression, giving it the designation ''01W''.<ref>{{Cite JTWC|date=2021-02-17|type=warn|category=TD|designation=01W|no=1|name=One|url=https://www.metoc.navy.mil/jtwc/products/wp0121web.txt|archive-url=https://wiki.chlod.net/jtwc/text/2021-02-17-0810-wp0121web.txt}}</ref> On February 18, as it neared the [[Philippines]], the JTWC and the PAGASA both upgraded the system to a tropical storm.<ref>{{Cite JTWC|date=2021-02-18|type=warn|category=TS|designation=01W|no=4|name=One|url=https://www.metoc.navy.mil/jtwc/products/wp0121web.txt|archive-url=https://wiki.chlod.net/jtwc/text/2021-02-18-0200-wp0121web.txt}}</ref><ref>{{Cite PAGASA|date=2021-02-18|name=Auring|type=swb|no=3|category=TS|url=https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin_auring.pdf|archive-url=https://archive.org/download/pagasa-21-TC01/PAGASA_21-TC01_Auring_SWB%2303.pdf}}</ref> The JMA followed suit soon after, naming the storm ''Dujuan''.<ref>{{Cite web|date=18 February 2021|title=Tropical Cyclone Information|url=https://www.jma.go.jp/en/typh/2101.html|url-status=dead|archive-url=https://archive.vn/NLucp|archive-date=18 February 2021|access-date=18 February 2021|website=[[Japan Meteorological Agency]]}}</ref> At 03:00 UTC on February 19, the PAGASA upgraded Dujuan into a severe tropical storm; however, this period was short-lived, as the agency downgraded Dujuan back into a tropical storm 6 hours later.<ref>{{Cite PAGASA|date=2021-02-19|name=Auring|intl_name=Dujuan|type=swb|no=6|category=STS|url=https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin/SWB%236_auring.pdf|archive-url=https://archive.org/download/pagasa-21-TC01/PAGASA_21-TC01_Auring_SWB%2306.pdf}}</ref><ref>{{Cite PAGASA|date=2021-02-19|name=Auring|intl_name=Dujuan|type=swb|no=7|category=TS|url=https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin_auring.pdf|archive-url=https://archive.org/download/pagasa-21-TC01/PAGASA_21-TC01_Auring_SWB%2307.pdf}}</ref> On February 20, the storm significantly weakened as it made a small turn to the southwest due to unfavorable conditions caused by high vertical wind shear, causing it to be downgraded by the JTWC into a tropical depression.<ref>{{Cite JTWC|date=2021-02-20|type=prog|category=TD|designation=01W|no=13|name=Dujuan|url=https://www.metoc.navy.mil/jtwc/products/wp0121prog.txt|archive-url=https://wiki.chlod.net/jtwc/prog/2021-02-20-0910-wp0121prog.txt}}</ref> The next day, as the storm began tracking northwestward yet again, vertical wind shear in Dujuan's environment had decreased allowing the storm to restrengthen, with the JTWC redeclaring the system as a tropical storm.<ref>{{Cite JTWC|date=2021-02-21|type=prog|category=TS|designation=01W|no=17|name=Dujuan|url=https://www.metoc.navy.mil/jtwc/products/wp0121prog.txt|archive-url=https://wiki.chlod.net/jtwc/prog/2021-02-21-0830-wp0121prog.txt}}</ref> By February 22, the JMA, the JTWC, and the PAGASA had downgraded the system to a tropical depression after the system's low-level circulation center (LLCC) had weakened prior to landfall.<ref>{{Cite web|date=2021-02-22|title=Tropical Cyclone Information|url=https://www.jma.go.jp/en/typh/2101.html|url-status=dead|archive-url=https://archive.vn/hqLkb|archive-date=2021-02-22|access-date=2021-02-22|website=[[Japan Meteorological Agency]]}}</ref><ref>{{Cite JTWC|date=2021-02-22|type=prog|category=TD|designation=01W|no=19|name=Dujuan|url=https://www.metoc.navy.mil/jtwc/products/wp0121prog.txt|archive-url=https://wiki.chlod.net/jtwc/prog/2021-02-21-2140-wp0121prog.txt}}</ref><ref>{{Cite PAGASA|date=2021-02-21|name=Auring|intl_name=Dujuan|type=swb|no=19|category=TD|url=https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin/SWB%2319_auring.pdf|archive-url=https://archive.org/download/pagasa-21-TC01/PAGASA_21-TC01_Auring_SWB%2319.pdf}}</ref>


<!-- Preparations and impact -->
Dujuan briefly moved over [[Palau]] on February 16 as a tropical depression, bringing heavy [[rainfall]] to parts of the country.<ref>{{Cite web|url=https://forecast.weather.gov/product.php?site=GUM&issuedby=PQ&product=RWR&format=CI&version=30&glossary=0|title=WEATHER ROUNDUP FOR THE MARIANAS AND MICRONESIA|website=National Weather Service Tiyan GU|date=February 16, 2021|access-date=February 16, 2021|archive-url=https://archive.is/9txN4|archive-date=February 16, 2021}}</ref><ref>{{Cite web|url= https://www.metoc.navy.mil/jtwc/products/wp9121.gif|title=Tropical Cyclone Formation Alert Graphic|website=Joint Typhoon Warning Center|date=February 16, 2021|access-date=February 16, 2021|archive-url=https://archive.is/9UKF3|archive-date=February 16, 2021}}</ref> In anticipation of the storm, the PAGASA raised [[TCWS|Signal #1]] warnings for the eastern section of [[Mindanao]] on February 19, with the same warnings raised on the eastern provinces of [[Visayas]].<ref>{{Cite PAGASA|date=2021-02-19|name=Auring|intl_name=Dujuan|type=swb|no=5|category=TS|url=https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin/SWB%235_auring.pdf|archive-url=https://archive.org/download/pagasa-21-TC01/PAGASA_21-TC01_Auring_SWB%2305.pdf}}</ref><ref>{{Cite web|title=Storm Signal No. 1 up in four Mindanao areas as Auring remains stationary over Philippine Sea|url=https://cnnphilippines.com/news/2021/2/19/tropical-storm-auring-weather-updates.html|access-date=2021-02-19|website=CNN Philippines|language=en}}</ref><ref>{{Cite PAGASA|date=2021-02-19|name=Auring|intl_name=Dujuan|type=swb|no=7|category=TS|url=https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin/SWB%237_auring.pdf|archive-url=https://archive.org/download/pagasa-21-TC01/PAGASA_21-TC01_Auring_SWB%2307.pdf}}</ref> Signal 2 warnings were also issued in the majority of [[Eastern Samar]], [[Samar]], [[Southern Leyte]], [[Dinagat Islands]], and [[Surigao del Norte]] on February 21 as Dujuan re-intensified hours before landfall.<ref>{{Cite PAGASA|date=2021-02-21|name=Auring|intl_name=Dujuan|type=swb|no=18|category=TS|url=https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin/SWB%2318_auring.pdf|archive-url=https://archive.org/download/pagasa-21-TC01/PAGASA_21-TC01_Auring_SWB%2318.pdf}}</ref> The warnings were quickly lowered, however, just a few hours after being issued.<ref>{{Cite PAGASA|date=2021-02-21|name=Auring|intl_name=Dujuan|type=swb|no=19|category=TS|url=https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin/SWB%2319_auring.pdf|archive-url=https://archive.org/download/pagasa-21-TC01/PAGASA_21-TC01_Auring_SWB%2319.pdf}}</ref>
Dujuan briefly moved over [[Palau]] on February 16 as a tropical depression, bringing heavy [[rainfall]] to parts of the country.<ref>{{Cite web|url=https://forecast.weather.gov/product.php?site=GUM&issuedby=PQ&product=RWR&format=CI&version=30&glossary=0|title=WEATHER ROUNDUP FOR THE MARIANAS AND MICRONESIA|website=National Weather Service Tiyan GU|date=February 16, 2021|access-date=February 16, 2021|archive-url=https://archive.is/9txN4|archive-date=February 16, 2021}}</ref><ref>{{Cite web|url= https://www.metoc.navy.mil/jtwc/products/wp9121.gif|title=Tropical Cyclone Formation Alert Graphic|website=Joint Typhoon Warning Center|date=February 16, 2021|access-date=February 16, 2021|archive-url=https://archive.is/9UKF3|archive-date=February 16, 2021}}</ref> In anticipation of the storm, the PAGASA raised [[TCWS|Signal #1]] warnings for the eastern section of [[Mindanao]] on February 19, with the same warnings raised on the eastern provinces of [[Visayas]].<ref>{{Cite PAGASA|date=2021-02-19|name=Auring|intl_name=Dujuan|type=swb|no=5|category=TS|url=https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin/SWB%235_auring.pdf|archive-url=https://archive.org/download/pagasa-21-TC01/PAGASA_21-TC01_Auring_SWB%2305.pdf}}</ref><ref>{{Cite web|title=Storm Signal No. 1 up in four Mindanao areas as Auring remains stationary over Philippine Sea|url=https://cnnphilippines.com/news/2021/2/19/tropical-storm-auring-weather-updates.html|access-date=2021-02-19|website=CNN Philippines|language=en}}</ref><ref>{{Cite PAGASA|date=2021-02-19|name=Auring|intl_name=Dujuan|type=swb|no=7|category=TS|url=https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin/SWB%237_auring.pdf|archive-url=https://archive.org/download/pagasa-21-TC01/PAGASA_21-TC01_Auring_SWB%2307.pdf}}</ref> Signal 2 warnings were also issued in the majority of [[Eastern Samar]], [[Samar]], [[Southern Leyte]], [[Dinagat Islands]], and [[Surigao del Norte]] on February 21 as Dujuan re-intensified hours before landfall.<ref>{{Cite PAGASA|date=2021-02-21|name=Auring|intl_name=Dujuan|type=swb|no=18|category=TS|url=https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin/SWB%2318_auring.pdf|archive-url=https://archive.org/download/pagasa-21-TC01/PAGASA_21-TC01_Auring_SWB%2318.pdf}}</ref> The warnings were quickly lowered, however, just a few hours after being issued.<ref>{{Cite PAGASA|date=2021-02-21|name=Auring|intl_name=Dujuan|type=swb|no=19|category=TS|url=https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin/SWB%2319_auring.pdf|archive-url=https://archive.org/download/pagasa-21-TC01/PAGASA_21-TC01_Auring_SWB%2319.pdf}}</ref> Despite the lowered warnings, the storm was able to cause flooding in parts of [[Visayas]]. Before the storm's landfall, in [[Tandag City]], [[Surigao del Sur]], heavy rains had already caused houses to be submerged in floodwater.<ref>{{Cite web|title=IN PHOTOS: Surigao del Sur flooded due to Tropical Storm Auring|url=https://www.rappler.com/moveph/photos-surigao-del-sur-floods-tropical-storm-auring-february-2021|access-date=2021-02-22|website=Rappler|language=en}}</ref><ref>{{Cite web|title=IN PHOTOS: Surigao del Sur flooded due to Tropical Storm Auring|url=https://www.rappler.com/moveph/photos-surigao-del-sur-floods-tropical-storm-auring-february-2021|access-date=2021-02-22|website=Rappler|language=en}}</ref> Classes and government work was suspended on February 22 in Romblon and in parts of [[Leyte]], [[Cebu]], and Surigao del Sur.<ref>{{Cite web|title=Walang Pasok: Class, work suspensions on February 22 due to 'Auring'|url=https://www.philstar.com/headlines/2021/02/22/2079584/walang-pasok-class-work-suspensions-february-22-due-auring|access-date=2021-02-22|website=Philstar.com}}</ref>

<!-- Impact totals -->
A total of <!-- Subject to change. Periodically check http://ndrrmc.gov.ph/ for latest numbers. -->5,475 individuals were affected in [[Caraga]] and in the [[Davao Region]]. 5,054 of the affected individuals were taken to 37 various evacuation shelters in each region. In [[Surigao del Norte]] and Surigao del Sur, 44 houses were partially damaged. 36 domestic flights and two sea trips were also cancelled due to the harsh weather, with 2,072 passengers being left stranded in ports in [[Central]] and [[Eastern Visayas]].<ref>{{Cite web|date=2021-02-21|title=Sitrep No. 03 re Preparedness Measures and Effects of Severe Tropical Storm "AURING"|url=https://ndrrmc.gov.ph/attachments/article/4144/SitRep_No_3_TS_AURING_Update.pdf|url-status=dead|archive-url=https://web.archive.org/web/20210222013801/https://ndrrmc.gov.ph/attachments/article/4144/SitRep_No_3_TS_AURING_Update.pdf|archive-date=2021-02-22|access-date=2021-02-22|website=[[National Disaster Risk Reduction and Management Council]]}}</ref>


==== Current storm information ====
==== Current storm information ====

Revision as of 01:38, 22 February 2021

2021 Pacific typhoon season
Season summary map
Seasonal boundaries
First system formedJanuary 19, 2021
Last system dissipatedSeason ongoing
Strongest storm
NameDujuan
 • Maximum winds75 km/h (45 mph)
(10-minute sustained)
 • Lowest pressure996 hPa (mbar)
Seasonal statistics
Total depressions2
Total storms1
Total fatalities1 total
Total damage$10.8 million (2021 USD)
Related articles
Pacific typhoon seasons
2019, 2020, 2021, 2022, 2023

The 2021 Pacific typhoon season is an ongoing event in the annual cycle of tropical cyclone formation, in which tropical cyclones form in the western Pacific Ocean. The season runs throughout 2021, with no seasonal boundaries, though most tropical cyclones typically develop between May and October. The scope of this article is limited to the Pacific Ocean to the north of the equator between 100°E and 180th meridian. Within the northwestern Pacific Ocean, there are two separate agencies that assign names to tropical cyclones, which can often result in a cyclone having two names. The Japan Meteorological Agency (JMA) names a tropical cyclone should it be judged to have 10-minute sustained wind speeds of at least 65 km/h (40 mph) anywhere in the basin, whilst the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) assigns names to tropical cyclones which move into or form as a tropical depression in their area of responsibility located between 135°E and 115°E and between 5°N and 25°N, regardless of whether or not a tropical cyclone has already been given a name by the JMA. Tropical depressions that are monitored by the United States' Joint Typhoon Warning Center (JTWC) are given a number with a "W" suffix.

Seasonal forecasts

Other forecasts
Date		 Forecast
Center		 Period Systems Ref.
December 27, 2020 PAGASA January–March 0–3 tropical cyclones [1]
December 27, 2020 PAGASA April–June 1–4 tropical cyclones [1]
2021 season Forecast
Center		 Tropical
cyclones		 Tropical
storms		 Typhoons Ref.
Actual activity: JMA 2 1 0
Actual activity: JTWC 1 1 0
Actual activity: PAGASA 1 1 0

During the year several national meteorological services and scientific agencies forecast how many tropical cyclones, tropical storms, and typhoons will form during a season and/or how many tropical cyclones will affect a particular country. These agencies included the Tropical Storm Risk (TSR) Consortium of University College London, PAGASA and Taiwan's Central Weather Bureau. The first forecast was released by PAGASA on December 27, 2020, in their monthly seasonal climate outlook predicting the first half of 2021.[1] The PAGASA predicts that only 0–3 tropical cyclones are expected to form or enter the Philippine Area of Responsibility between January and March, while 1–4 tropical cyclones are expected to form between April and June. PAGASA also predicted that the ongoing La Niña could persist until the end of the first quarter of 2021.[1]

Seasonal summary

The basin was quiet for the month of January, with only a minor tropical depression forming that did not cause much damage. By mid-February, a new tropical depression formed, and was named Auring by PAGASA. The system then strengthened into a tropical storm, earning the name Dujuan from the Japan Meteorological Agency, the first named storm of the year.

Systems

Tropical Storm Dujuan (Auring)

Tropical storm (JMA)
Tropical storm (SSHWS)
 
DurationFebruary 16 – Present
Peak intensity75 km/h (45 mph) (10-min);
996 hPa (mbar)

At 12:00 UTC on February 16, the JMA reported that a tropical depression had formed.[2] The JTWC issued a Tropical Cyclone Formation Alert on the system just two hours later.[3] Later that day, the PAGASA began to issue advisories for the system, which the agency declared a tropical depression.[4] At 00:00 UTC on February 17, the system moved into the Philippine Area of Responsibility, earning the name Auring from the PAGASA. This made Auring the first storm of the season to be named by the PAGASA.[5] At 09:00 UTC February 17, the JTWC upgraded the system into a tropical depression, giving it the designation 01W.[6] On February 18, as it neared the Philippines, the JTWC and the PAGASA both upgraded the system to a tropical storm.[7][8] The JMA followed suit soon after, naming the storm Dujuan.[9] At 03:00 UTC on February 19, the PAGASA upgraded Dujuan into a severe tropical storm; however, this period was short-lived, as the agency downgraded Dujuan back into a tropical storm 6 hours later.[10][11] On February 20, the storm significantly weakened as it made a small turn to the southwest due to unfavorable conditions caused by high vertical wind shear, causing it to be downgraded by the JTWC into a tropical depression.[12] The next day, as the storm began tracking northwestward yet again, vertical wind shear in Dujuan's environment had decreased allowing the storm to restrengthen, with the JTWC redeclaring the system as a tropical storm.[13] By February 22, the JMA, the JTWC, and the PAGASA had downgraded the system to a tropical depression after the system's low-level circulation center (LLCC) had weakened prior to landfall.[14][15][16]

Dujuan briefly moved over Palau on February 16 as a tropical depression, bringing heavy rainfall to parts of the country.[17][18] In anticipation of the storm, the PAGASA raised Signal #1 warnings for the eastern section of Mindanao on February 19, with the same warnings raised on the eastern provinces of Visayas.[19][20][21] Signal 2 warnings were also issued in the majority of Eastern Samar, Samar, Southern Leyte, Dinagat Islands, and Surigao del Norte on February 21 as Dujuan re-intensified hours before landfall.[22] The warnings were quickly lowered, however, just a few hours after being issued.[23] Despite the lowered warnings, the storm was able to cause flooding in parts of Visayas. Before the storm's landfall, in Tandag City, Surigao del Sur, heavy rains had already caused houses to be submerged in floodwater.[24][25] Classes and government work was suspended on February 22 in Romblon and in parts of Leyte, Cebu, and Surigao del Sur.[26]

A total of 5,475 individuals were affected in Caraga and in the Davao Region. 5,054 of the affected individuals were taken to 37 various evacuation shelters in each region. In Surigao del Norte and Surigao del Sur, 44 houses were partially damaged. 36 domestic flights and two sea trips were also cancelled due to the harsh weather, with 2,072 passengers being left stranded in ports in Central and Eastern Visayas.[27]

Current storm information

As of 21:00 UTC February 21, Tropical Depression Dujuan (Auring) is located near 10°36′N 125°18′E / 10.6°N 125.3°E / 10.6; 125.3 (Dujuan), or about 390 nautical miles (720 km; 450 mi) southeast of Manila, Philippines. Maximum 1-minute sustained winds are at 25 knots (45 km/h; 30 mph). The minimum central barometric pressure is 1006 hPa (29.71 inHg), and the system is moving west-northwestward at 10 kn (19 km/h; 12 mph).

For the latest official information, see:

Watches and warnings

Philippines (as of 00:00 UTC (08:00 PHT))
Signal #1
Winds of 39–61 km/h (24–38 mph) are expected to occur within 36 hours.
Source: PAGASA

Other systems

During January 19, the JMA reported that a tropical depression had developed to the east of Luzon, Philippines.[28] The precursor to the depression brought scattered showers and thunderstorms to Mindanao, Palawan, and Visayas on January 18.[29] The JMA, however, discontinued advisories for the system on the next day.[30] The depression also brought stormy weather to Luzon on January 20. PAGASA warned residents of possible flash flooding and mudslides due to heavy rainfall.[31] The precursor of this system was associated from a frontal system, and its combined effects which brought heavy rainfall over much of Visayas, the Bicol Region, and Northern Mindanao resulted in one death and agricultural damages of up to ₱519.7 million (US$10.8 million).[32]

Storm names

See also: Tropical cyclone naming and History of tropical cyclone naming

Within the Northwest Pacific Ocean, both the Japan Meteorological Agency (JMA) and the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) assign names to tropical cyclones that develop in the Western Pacific, which can result in a tropical cyclone having two names.[33] The Japan Meteorological Agency's RSMC Tokyo — Typhoon Center assigns international names to tropical cyclones on behalf of the World Meteorological Organization's Typhoon Committee, should they be judged to have 10-minute sustained windspeeds of 65 km/h (40 mph).[34] PAGASA names to tropical cyclones which move into or form as a tropical depression in their area of responsibility located between 135°E and 115°E and between 5°N and 25°N even if the cyclone has had an international name assigned to it.[33] The names of significant tropical cyclones are retired, by both PAGASA and the Typhoon Committee.[34] Should the list of names for the Philippine region be exhausted then names will be taken from an auxiliary list of which the first ten are published each season. Unused names are marked in gray.

International names

Main article: List of retired Pacific typhoon names

A tropical cyclone is named when it is judged to have 10-minute sustained windspeeds of 65 km/h (40 mph).[35] The JMA selected the names from a list of 140 names, that had been developed by the 14 members nations and territories of the ESCAP/WMO Typhoon Committee.[36] Retired names, if any, will be announced by the WMO in 2022; though replacement names will be announced in 2023. The next 28 names on the naming list are listed here along with their international numeric designation, if they are used.

  • Dujuan (2101) (active)
  • Surigae (unused)
  • Choi-wan (unused)
  • Koguma (unused)
  • Champi (unused)
  • In-fa (unused)
  • Cempaka (unused)
  • Nepartak (unused)
  • Lupit (unused)
  • Mirinae (unused)
  • Nida (unused)
  • Omais (unused)
  • Conson (unused)
  • Chanthu (unused)
  • Dianmu (unused)
  • Mindulle (unused)
  • Lionrock (unused)
  • Kompasu (unused)
  • Namtheun (unused)
  • Malou (unused)
  • Nyatoh (unused)
  • Rai (unused)
  • Malakas (unused)
  • Megi (unused)
  • Chaba (unused)
  • Aere (unused)
  • Songda (unused)
  • Trases (unused)

Philippines

Main article: List of retired Philippine typhoon names

This season, PAGASA will use its own naming scheme, that will either develop within or move into their self-defined area of responsibility.[37] The names were taken from a list of names, that was last used during 2017 and are scheduled to be used again during 2025.[37] All of the names are the same except Uwan and Verbena which replaced the names Urduja and Vinta after they were retired.[37]

  • Auring (2101) (active)
  • Bising (unused)
  • Crising (unused)
  • Dante (unused)
  • Emong (unused)
  • Fabian (unused)
  • Gorio (unused)
  • Huaning (unused)
  • Isang (unused)
  • Jolina (unused)
  • Kiko (unused)
  • Lannie (unused)
  • Maring (unused)
  • Nando (unused)
  • Odette (unused)
  • Paolo (unused)
  • Quedan (unused)
  • Ramil (unused)
  • Salome (unused)
  • Tino (unused)
  • Uwan (unused)
  • Verbena (unused)
  • Wilma (unused)
  • Yasmin (unused)
  • Zoraida (unused)

Auxiliary list

  • Alamid (unused)
  • Bruno (unused)
  • Conching (unused)
  • Dolor (unused)
  • Ernie (unused)
  • Florante (unused)
  • Gerardo (unused)
  • Hernan (unused)
  • Isko (unused)
  • Jerome (unused)

Season effects

This table summarizes all the systems that developed within or moved into the North Pacific Ocean, to the west of the International Date Line during 2021. The tables also provide an overview of a systems intensity, duration, land areas affected and any deaths or damages associated with the system.

Name Dates Peak intensity Areas affected Damage
(USD) 		Deaths Refs
Category Wind speed Pressure
TD January 19 – 20 Tropical depression Not specified 1008 hPa (29.77 inHg) Philippines $10.8 million 1 [32]
Dujuan (Auring) February 16 – Present Tropical storm 75 km/h (45 mph) 996 hPa (29.41 inHg) Palau, Philippines None None
Season aggregates
2 systems January 19 –
Season ongoing		 75 km/h (45 mph) 996 hPa (29.41 inHg) $10.8 million 1

See also

References

  1. ^ a b c d 131st Climate Forum Climate Outlook January–June 2021 (PDF) (Seasonal Climate Outlook). Philippine Atmospheric Geophysical and Astronomical Services Administration. December 27, 2020. Retrieved December 27, 2020.
  2. ^ "WWJP25 RJTD 161200". Japan Meteorological Agency. February 16, 2021. Retrieved February 16, 2021.
  3. ^ "Tropical Cyclone Formation Alert (Invest 91W)". Joint Typhoon Warning Center. February 16, 2021. Archived from the original on February 16, 2021. Retrieved February 16, 2021.
  4. ^ "Tropical Cyclone Advisory #1 for Tropical Depression" (PDF). PAGASA. 16 February 2021. Archived from the original (PDF) on 16 February 2021. Retrieved 16 February 2021.
  5. ^ "Severe Weather Bulletin #1 for Tropical Depression 'Auring'" (PDF). PAGASA. 17 February 2021. Archived from the original (PDF) on 17 February 2021. Retrieved 17 February 2021.
  6. ^ Tropical Depression 01W (One) Warning No. 1 (Report). United States Joint Typhoon Warning Center. 17 February 2021. Retrieved 17 February 2021. {{cite report}}: |archive-url= requires |archive-date= (help)
  7. ^ Tropical Storm 01W (One) Warning No. 4 (Report). United States Joint Typhoon Warning Center. 18 February 2021. Retrieved 18 February 2021. {{cite report}}: |archive-url= requires |archive-date= (help)
  8. ^ "Severe Weather Bulletin #3 for Tropical Storm 'Auring'" (PDF). PAGASA. 18 February 2021. Archived from the original (PDF) on 18 February 2021. Retrieved 18 February 2021.
  9. ^ "Tropical Cyclone Information". Japan Meteorological Agency. 18 February 2021. Archived from the original on 18 February 2021. Retrieved 18 February 2021.
  10. ^ "Severe Weather Bulletin #6 for Severe Tropical Storm 'Auring' (Dujuan)" (PDF). PAGASA. 19 February 2021. Archived from the original (PDF) on 19 February 2021. Retrieved 19 February 2021.
  11. ^ "Severe Weather Bulletin #7 for Tropical Storm 'Auring' (Dujuan)" (PDF). PAGASA. 19 February 2021. Archived from the original (PDF) on 19 February 2021. Retrieved 19 February 2021.
  12. ^ Prognostic Reasoning for Tropical Depression 01W (Dujuan) Warning No. 13 (Report). United States Joint Typhoon Warning Center. 20 February 2021. Retrieved 20 February 2021. {{cite report}}: |archive-url= requires |archive-date= (help)
  13. ^ Prognostic Reasoning for Tropical Storm 01W (Dujuan) Warning No. 17 (Report). United States Joint Typhoon Warning Center. 21 February 2021. Retrieved 21 February 2021. {{cite report}}: |archive-url= requires |archive-date= (help)
  14. ^ "Tropical Cyclone Information". Japan Meteorological Agency. 2021-02-22. Archived from the original on 2021-02-22. Retrieved 2021-02-22.
  15. ^ Prognostic Reasoning for Tropical Depression 01W (Dujuan) Warning No. 19 (Report). United States Joint Typhoon Warning Center. 22 February 2021. Retrieved 22 February 2021. {{cite report}}: |archive-url= requires |archive-date= (help)
  16. ^ "Severe Weather Bulletin #19 for Tropical Depression 'Auring' (Dujuan)" (PDF). PAGASA. 21 February 2021. Archived from the original (PDF) on 21 February 2021. Retrieved 21 February 2021.
  17. ^ "WEATHER ROUNDUP FOR THE MARIANAS AND MICRONESIA". National Weather Service Tiyan GU. February 16, 2021. Archived from the original on February 16, 2021. Retrieved February 16, 2021.
  18. ^ "Tropical Cyclone Formation Alert Graphic". Joint Typhoon Warning Center. February 16, 2021. Archived from the original on February 16, 2021. Retrieved February 16, 2021.
  19. ^ "Severe Weather Bulletin #5 for Tropical Storm 'Auring' (Dujuan)" (PDF). PAGASA. 19 February 2021. Archived from the original (PDF) on 19 February 2021. Retrieved 19 February 2021.
  20. ^ "Storm Signal No. 1 up in four Mindanao areas as Auring remains stationary over Philippine Sea". CNN Philippines. Retrieved 2021-02-19.
  21. ^ "Severe Weather Bulletin #7 for Tropical Storm 'Auring' (Dujuan)" (PDF). PAGASA. 19 February 2021. Archived from the original (PDF) on 19 February 2021. Retrieved 19 February 2021.
  22. ^ "Severe Weather Bulletin #18 for Tropical Storm 'Auring' (Dujuan)" (PDF). PAGASA. 21 February 2021. Archived from the original (PDF) on 21 February 2021. Retrieved 21 February 2021.
  23. ^ "Severe Weather Bulletin #19 for Tropical Storm 'Auring' (Dujuan)" (PDF). PAGASA. 21 February 2021. Archived from the original (PDF) on 21 February 2021. Retrieved 21 February 2021.
  24. ^ "IN PHOTOS: Surigao del Sur flooded due to Tropical Storm Auring". Rappler. Retrieved 2021-02-22.
  25. ^ "IN PHOTOS: Surigao del Sur flooded due to Tropical Storm Auring". Rappler. Retrieved 2021-02-22.
  26. ^ "Walang Pasok: Class, work suspensions on February 22 due to 'Auring'". Philstar.com. Retrieved 2021-02-22.
  27. ^ "Sitrep No. 03 re Preparedness Measures and Effects of Severe Tropical Storm "AURING"" (PDF). National Disaster Risk Reduction and Management Council. 2021-02-21. Archived from the original (PDF) on 2021-02-22. Retrieved 2021-02-22.
  28. ^ "WWJP27 RJTD 191800". Japan Meteorological Agency. 19 January 2021. Archived from the original on 20 January 2021. Retrieved 20 January 2021.
  29. ^ Cristina Arayata (January 18, 2021). "LPA, ITCZ to bring scattered rains Monday". pna.gov.ph. Philippine News Agency. Retrieved January 20, 2021.
  30. ^ "Warning and Summary 201200". Japan Meteorological Agency. January 20, 2021. Archived from the original on January 20, 2021. Retrieved January 20, 2021.
  31. ^ Acor Arceo (January 20, 2021). "Parts of Luzon rainy due to LPA off Aurora, tail-end of frontal system". rappler.com. Rappler. Retrieved January 21, 2021.
  32. ^ a b "SitRep no.09 re Prep. Measures and Effects for TEFS in Reg V, VI, VIII and X" (PDF). NDRRMC. January 20, 2021.
  33. ^ a b Padgett, Gary. "Monthly Tropical Cyclone Summary December 1999". Australian Severe Weather. Archived from the original on August 28, 2012. Retrieved October 1, 2013.
  34. ^ a b The Typhoon Committee (February 21, 2013). "Typhoon Committee Operational Manual 2013". World Meteorological Organization. pp. 37–38. Archived from the original (PDF) on August 28, 2012. Retrieved October 1, 2013.
  35. ^ http://www.typhooncommittee.org/48th/docs/item%204%20technical%20presentations/4.1.Review2015TyphoonSeason.pdf
  36. ^ Zhou, Xiao; Lei, Xiaotu (2012). "Summary of retired typhoons within the Western North Pacific Ocean". Tropical Cyclone Research and Review. 1 (1). The Economic and Social Commission for Asia and the Pacific/World Meteorological Organization's Typhoon Committee: 23–32. doi:10.6057/2012TCRR01.03. ISSN 2225-6032. Retrieved December 21, 2014.
  37. ^ a b c "Philippine Tropical Cyclone Names". Philippine Atmospheric, Geophysical and Astronomical Services Administration. Archived from the original on January 30, 2021. Retrieved January 30, 2021.

External links

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