Typhoon Lupit (2009)

Typhoon Lupit, known in the Philippines as Typhoon Ramil was a late season and long-lived strong typhoon that formed in mid-October 2009.[1][2] The storm caused no reported fatalities or major damages.[3]

Typhoon Lupit (Ramil)
Typhoon (JMA scale)
Category 5 super typhoon (SSHWS)
Typhoon Lupit in October 19.
FormedOctober 14, 2009
DissipatedOctober 27, 2009
Highest winds10-minute sustained: 175 km/h (110 mph)
1-minute sustained: 260 km/h (160 mph)
Lowest pressure930 hPa (mbar); 27.46 inHg
Areas affectedCaroline Islands, Philippines, Japan
Part of the 2009 Pacific typhoon season

Meteorological history
Map plotting the track and the intensity of the storm, according to the Saffir–Simpson scale

Early on October 13, the JTWC reported that an area of disorganized deep convection had persisted about 1,870 km (1,160 mi) to the southeast of Hagåtña, Guam.[4] The convection had a broad circulation center that was beginning to consolidate in an area of low vertical windshear and favorable sea surface temperatures.[4] Later that day, as the low-level circulation center had consolidated further, the JTWC released a tropical cyclone formation alert before early the next day both the JMA and the JTWC initiated advisories on the system as it had intensified into Tropical Depression 22W.[5][6][7]During that day the depressions low-level circulation center continued to organize with deep convective bands starting to wrap into the center.[8]

Early on October 13, the JTWC reported that an area of convection had persisted about 380 nmi (700 km) to the northwest of Kwajalein. The convection was disorganised but was starting to consolidate around a broad low-level circulation center within a favourable environment to develop further with good vertical windshear and favourable sea surface temperatures. The disturbance rapidly developed throughout that day with a Tropical Cyclone Formation Alert issued later that day by the JTWC before advisories were initiated early the next day by the JMA and the JTWC who designated it as Tropical Depression 22W before the JTWC reported that the depression had intensified into a weak tropical storm.[9] On October 15, JMA upgraded it to a Tropical Storm with the name Lupit. On the afternoon of next day, JTWC reported that Lupit strengthened into a Category 1 typhoon. That evening, PAGASA started issuing warnings on Lupit as it entered into their area of responsibility and assigned its local name, Ramil. At the same time JMA also upgraded Lupit into a typhoon. Intensification continued due to favorable conditions and hot water conditions, then by October 17, it rapidly intensified into a Category 3-equivalent typhoon. In the morning of the next day, it strengthened into a Category 4 typhoon, then strengthened further to Super Typhoon classification. On October 20, Lupit weakened to a minimal typhoon. By the 24th, dry air entrainment and an unfavorable environment had weakened Lupit further to a strong tropical storm, and caused the storm to change track from its westward drift to accelerate northeastward. Later that day, JTWC and PAGASA issued their final warning as Lupit was beginning extratropical transition. However, the JMA continued to issue warnings on Lupit until early on October 27.[10]

Preparations and impact

Early on October 14, the National Weather Service Weather Forecast Office in Tiyan, Guam, placed Guam under a tropical storm watch as Lupit threatened to bring winds of at least 65 km/h, (40 mph), to Guam within 48 hours.[11] However early the next day, NWS Guam canceled the tropical storm watch for Guam as Lupit had made its closest approach to Guam without causing any deaths or damages.[12][13] Though the automated station at Apra Harbor observed gusts of 95 km/h, (60 mph), from brief lines of showers which were associated with Typhoon Lupit.[13]

See also

References
  1. "Digital Typhoon: Typhoon 200920 (LUPIT) - General Information (Pressure and Track Charts)". agora.ex.nii.ac.jp. Retrieved 2020-08-19.
  2. "Digital Typhoon: Typhoon 200920 (LUPIT)". agora.ex.nii.ac.jp. Retrieved 2020-08-19.
  3. Lupit Turns Away From Philippines Reeling From Storms
  4. "Significant Tropical Weather Advisory for the Western and Southern Pacific Ocean 2009-10-13 06z". Joint Typhoon Warning Center. 2009-10-13. Retrieved 2010-04-11.
  5. "Tropical Cyclone Formation Alert 2009-10-13 23z". Joint Typhoon Warning Center. 2009-10-13. Archived from the original on October 14, 2009. Retrieved 2010-04-11.
  6. "JTWC Tropical Cyclone Warning 2009-10-14 00z". Joint Typhoon Warning Center. 2009-10-14. Retrieved 2010-04-11.
  7. "JTWC Tropical Cyclone Best Track Analysis Super Typhoon Lupit 2009". Joint Typhoon Warning Center. 2010-02-18. Archived from the original on 4 March 2010. Retrieved 2010-04-11.
  8. "JTWC Tropical Cyclone Warning 2009-10-14 06z". Joint Typhoon Warning Center. 2009-10-14. Retrieved 2010-04-11.
  9. "JTWC Tropical Cyclone 22W Warning 05". Joint Typhoon Warning Center. 2009-10-14. Retrieved 2009-10-12.
  10. "JTWC Tropical Cyclone 22W Warning 44". Joint Typhoon Warning Center. 2009-10-25. Retrieved 2009-10-25.
  11. Carol Baqui (2009-10-14). "NWS Guam tropical cyclone advisory: 2009-10-14 10z". National Weather Service Weather Forecast Office: Tiyan, Guam. National Oceanic and Atmospheric Administration. Retrieved 2010-04-11.
  12. Dan Mundell (2009-10-15). "NWS Guam tropical cyclone advisory: 2009-10-15 03z". National Weather Service Weather Forecast Office: Tiyan, Guam. National Oceanic and Atmospheric Administration. Retrieved 2010-04-11.
  13. "NCDC storm events database: Guam". National Climatic Data Center. 2010-03-10. Retrieved 2010-04-11.
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