Typhoon Rai: Difference between revisions
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| NWSsource = [https://forecast.weather.gov/product.php?issuedby=PQ1&product=TCP&site=gum National Weather Service] |
| NWSsource = [https://forecast.weather.gov/product.php?issuedby=PQ1&product=TCP&site=gum National Weather Service] |
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** southeastern portion of [[Eastern Samar]] {{small|([[Guiuan]], [[Mercedes, Eastern Samar|Mercedes]], [[Salcedo, Eastern Samar|Salcedo]])}} |
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| PHsource = [https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin_odette.pdf PAGASA] |
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Revision as of 15:41, 14 December 2021
 | This article is about a current severe tropical storm where information can change quickly or be unreliable. The latest page updates may not reflect the most up-to-date information. Please refer to your local weather service or media outlets for the latest weather information pertaining to a specific location. |
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Current storm status Severe tropical storm (JMA) | |||
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| As of: | 12:00 UTC, December 14 | ||
| Location: | 8°24′N 134°42′E / 8.4°N 134.7°E 72 nmi (133 km; 83 mi) N of Koror, Palau | ||
| Sustained winds: | 55 knots (100 km/h; 65 mph) (10-min mean) gusting to 80 knots (150 km/h; 90 mph) 55 knots (100 km/h; 65 mph) (1-min mean) | ||
| Pressure: | 985 hPa (29.09 inHg) | ||
| Movement: | WNW at 13 kn (24 km/h; 15 mph) | ||
| See more detailed information. | |||
Severe Tropical Storm Rai, known in the Philippines as Severe Tropical Storm Odette, is a currently active tropical cyclone in the Western Pacific Ocean that is threatening Palau and the Philippines. It is the fortieth tropical depression, and the twenty-second tropical storm of the 2021 Pacific typhoon season, the system originated from a tropical disturbance near the equator on December 9. However, it dissipated on the next day as another area of convection lingered near the dissipating feature on that day. Conditions around the system were favorable for future development, and it slowly developed into a tropical depression on December 12. Also this day, the JTWC issued a TCFA on the consolidating depression. Future intensification ensued, and Rai was upgraded into a tropical storm on the next day before passing south of Ngulu Atoll.
Tropical cyclone warnings were issued for some islands of the Caroline Islands as Rai developed.
Meteorological history
Tropical storm (39–73 mph, 63–118 km/h)
Category 1 (74–95 mph, 119–153 km/h)
Category 2 (96–110 mph, 154–177 km/h)
Category 3 (111–129 mph, 178–208 km/h)
Category 4 (130–156 mph, 209–251 km/h)
Category 5 (≥157 mph, ≥252 km/h)
Unknown
Extratropical cyclone, remnant low, tropical disturbance, or monsoon depressionAt 06:00 UTC of December 9, the United States Joint Typhoon Warning Center (JTWC) started to monitor a low-latitude area of convection in the Pacific Ocean at 4°36′N 142°24′E / 4.6°N 142.4°E, located about 350 nautical miles (650 km; 400 mi) to Palau's east-southeast. This system is designated as "Invest 95W" by the bureau. A broad circulation was identified by the agency, with flaring convection over it. Marginal conditions for further development is also analysed by JTWC, with low to moderate wind shear and fair outflow. However, sea surface temperatures of 30–31 °C (86–88 °F) is seen to support the storm's intensification.[1] However, the system remained weak despite the given environment, and dissipated by 06:00 UTC the next day. However, another new area of low-pressure, this time designated as "Invest 96W" formed at this time. Analysis on the system revealed a degraded and disorganized low-level circulation center (LLCC).[2][3] Position fixes by 02:30 UTC of December 11 determined that its center forwarded to the north while convective bursts occurred around the system. It is also located over a developing surface trough and at this time, the JTWC raised the system's probability of development from "medium" to an earlier "low".[4] An ASCAT pass featured below gale-force winds on its northwest quadrant.[5]
The Japan Meteorological Agency (JMA) first upgraded the system to a tropical depression with winds of 30 knots (56 km/h; 35 mph) on 00:00 UTC of the next day, followed by the JTWC upgrading the storm's chances of developing to "high" and subsequently issuing a Tropical Cyclone Formation Alert (TCFA).[6][7][8] By 03:00 UTC of December 13, the JTWC upgraded the system into a weak tropical depression, highly based on Dvorak ratings of T1.5.[9] Nine hours later, the JMA classified the system as a tropical storm and gave it the next name on their naming list, Rai. At this time, the system became compact and this classification was based on Dvorak ratings and surface observations.[10] It was not until 15:00 UTC that day when the JTWC did the same to Rai, while tracking northwestwards.[11] Three hours later, Rai began to pass over Ngulu State's south, while continuing to intensify and organize.[12][13] By December 14 in the early morning, the system was upgraded into a severe tropical storm by the JMA, despite some dry air around the storm.[14]
Current storm information
As of 12:00 UTC December 14, Severe Tropical Storm Rai (Odette) is located near 8°24′N 134°42′E / 8.4°N 134.7°E or about 72 nmi (133 km; 83 mi) north of Koror, Palau. Maximum 10-minute sustained winds are at 55 knots (100 km/h; 65 mph), with gusts up to 80 knots (150 km/h; 90 mph), while maximum 1-minute sustained winds are at 55 knots (100 km/h; 65 mph). The minimum central barometric pressure is 985 hPa (29.09 inHg), and the system is moving west-northwest at 13 kn (24 km/h; 15 mph).
For the latest official information, see
- JMA's Tropical Cyclone Information for Severe Tropical Storm 2122 (Rai)
- JTWC's Tropical Cyclone Warning on Tropical Storm 28W (Rai)
- PAGASA's Tropical Cyclone Advisory on Severe Tropical Storm Rai (Odette)
Watches and warnings
| Philippines (as of 15:00 UTC (23:00 PHT)) | ||
|---|---|---|
| Signal #1 Winds of 39–61 km/h (24–38 mph) are prevailing or expected to occur within 36 hours. |
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| Source: PAGASA | ||
| National Weather Service (as of 9:55 UTC (07:55 ChST)) | ||
| Typhoon Warning Typhoon conditions (over 118 km/h (74 mph)) expected within 24 hours. | ||
| Source: National Weather Service | ||
Preparations and impact
Upon the system's intensification into a tropical depression, a typhoon watch was issued by the US National Weather Service in Tiyan, Guam in Koror and Kayangel while a tropical storm warning was placed for Ngulu Atoll. The island of Yap was placed also under tropical storm watch.[15]
The PAGASA began issuing Tropical Cyclone Advisories as early as December 12 given the forecasted track of the storm. In its first advisory, the PAGASA forecasted the possibility of Signal #4 being raised over the Visayas and Mindanao regions, later lowered to Signal #3.[16][17] Rai is forecasted to impact the Caraga or Eastern Visayas by December 16. Winds up to 89–117 km/h (55–73 mph) were also foreseen to slash the region while over 118–220 km/h (73–137 mph) in isolated areas.[18] The PAGASA also forecasted winds of up to 155 km/h (96 mph) prior to landfall.[19]
See also
- Weather of 2021
- Tropical cyclones in 2021
- Typhoon Mike (1990)
- Typhoon Phanfone (2019)
References
- ^ Significant Tropical Weather Advisory for the Western and South Pacific Oceans 090600Z-100600Z December 2021 (Report). United States Joint Typhoon Warning Center. 9 December 2021. Archived from the original on 9 December 2021. Retrieved 12 December 2021.
- ^ Significant Tropical Weather Advisory for the Western and South Pacific Oceans Reissued 092200Z-100600Z December 2021 (Report). United States Joint Typhoon Warning Center. 9 December 2021. Archived from the original on 9 December 2021. Retrieved 12 December 2021.
- ^ Significant Tropical Weather Advisory for the Western and South Pacific Oceans 100600Z-110600Z December 2021 (Report). United States Joint Typhoon Warning Center. 10 December 2021. Archived from the original on 10 December 2021. Retrieved 12 December 2021.
- ^ Significant Tropical Weather Advisory for the Western and South Pacific Oceans Reissued 110230Z-110600Z December 2021 (Report). United States Joint Typhoon Warning Center. 11 December 2021. Archived from the original on 11 December 2021. Retrieved 12 December 2021.
- ^ Significant Tropical Weather Advisory for the Western and South Pacific Oceans 110600Z-120600Z December 2021 (Report). United States Joint Typhoon Warning Center. 11 December 2021. Archived from the original on 11 December 2021. Retrieved 12 December 2021.
- ^ "WWJP25 RJTD 120000". Tokyo, Japan: Japan Meteorological Agency. December 12, 2021. Archived from the original on December 12, 2021. Retrieved December 12, 2021.
- ^ Significant Tropical Weather Advisory for the Western and South Pacific Oceans Reissued 120330Z-120600Z December 2021 (Report). United States Joint Typhoon Warning Center. 12 December 2021. Archived from the original on 11 December 2021. Retrieved 12 December 2021.
- ^ Tropical Cyclone Formation Alert (Invest 96W) (Report). United States Joint Typhoon Warning Center. 12 December 2021. Archived from the original on 12 December 2021.
- ^ Prognostic Reasoning for Tropical Depression 28W (Twentyeight) Warning NR 001 (Report). United States Joint Typhoon Warning Center. 13 December 2021. Archived from the original on 13 December 2021. Retrieved 13 December 2021.
- ^ RSMC Tropical Cyclone Prognostic Reasoning No. 7 for TS 2122 Rai (2122) (Report). Japan Meteorological Agency. December 13, 2021. Archived from the original on December 13, 2021. Retrieved December 14, 2021.
- ^ Prognostic Reasoning for Tropical Storm 28W (Rai) Warning NR 003 (Report). United States Joint Typhoon Warning Center. 13 December 2021. Archived from the original on 13 December 2021. Retrieved 14 December 2021.
- ^ "Tropical Storm Rai (28W) Intermediate Advisory Number 3A". forecast.weather.gov. National Weather Service, Tiyan. Archived from the original on 13 December 2021. Retrieved 13 December 2021.
- ^ "Tropical Storm Rai (28W) Intermediate Advisory Number 4". forecast.weather.gov. National Weather Service, Tiyan. Archived from the original on 13 December 2021. Retrieved 13 December 2021.
- ^ RSMC Tropical Cyclone Prognostic Reasoning No. 9 for STS 2122 Rai (2122) (Report). Japan Meteorological Agency. December 14, 2021. Archived from the original on December 13, 2021. Retrieved December 14, 2021.
- ^ "Tropical Depression 28W Advisory Number 1". forecast.weather.gov. National Weather Service, Tiyan. Archived from the original on 13 December 2021. Retrieved 13 December 2021.
- ^ "Tropical Cyclone Advisory #1 for Tropical Depression" (PDF). PAGASA. 12 December 2021. Retrieved 12 December 2021.
- ^ "Tropical Cyclone Advisory #2 for Tropical Depression" (PDF). PAGASA. 12 December 2021. Retrieved 12 December 2021.
- ^ "Tropical storm "Rai", posibleng pumasok ng PAR bukas at tatawaging Bagyong Odette... | 24 Oras" [Tropical storm "Rai", is likely to enter the PAR tomorrow and will be called Typhoon Odette ... | 24 Oras]. GMA News. Retrieved 13 December 2021.
- ^ "Tropical Cyclone Advisory #5 for Tropical Storm 'Rai'" (PDF). PAGASA. 13 December 2021. Archived from the original (PDF) on 13 December 2021. Retrieved 13 December 2021.
External links
- JMA General Information of Tropical Storm Rai (2122) from Digital Typhoon
- JMA Best Track Data (Graphics) of Tropical Storm Rai (2122)
- JTWC Best Track Data of Tropical Storm 28W (Rai)
- 28W.RAI from the U.S. Naval Research Laboratory
Tropical cyclones of the 2021 Pacific typhoon season | ||
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