Typhoon Prapiroon (Florita)
Prapiroon shortly before peak intensity north of Ryukyu Islands on July 2
Meteorological history
FormedJune 28, 2018
ExtratropicalJuly 4, 2018
DissipatedJuly 5, 2018
Typhoon
10-minute sustained (JMA)
Highest winds120 km/h (75 mph)
Lowest pressure960 hPa (mbar); 28.35 inHg
Category 1-equivalent typhoon
1-minute sustained (SSHWS/JTWC)
Highest winds150 km/h (90 mph)
Lowest pressure960 hPa (mbar); 28.35 inHg
Overall effects
Fatalities4
Damage$10.1 million (2018 USD)
Areas affectedJapan, Korean Peninsula
IBTrACS
Part of the 2018 Pacific typhoon season

Typhoon Prapiroon (Thai: พระพิรุณ), known in the Philippines as Severe Tropical Storm Florita, was a Category 1 typhoon that worsened the floods in Japan and also caused impacts in neighboring South Korea. The storm formed from an area of low pressure near the Philippines, and strengthened to a typhoon before entering the Sea of Japan. Prapiroon was the seventh named tropical cyclone and the first typhoon of the annual annual typhoon season. While Florita was the sixth named tropical cyclone by PAGASA.

Meteorological history

Map plotting the storm's track and intensity, according to the Saffir–Simpson scale
Map key
Saffir–Simpson scale
  Tropical depression (≤38 mph, ≤62 km/h)
  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
Storm type
triangle Extratropical cyclone, remnant low, tropical disturbance, or monsoon depression

On June 27 at 20:00 UTC, the Joint Typhoon Warning Center (JTWC) began monitoring a system in the Philippine Sea, giving it a low development potential.[1] The next day at 00:00 UTC, the Japan Meteorological Agency (JMA) began issuing advisories on a tropical depression,[2] with the JTWC upgrading its development potential to medium at 00:30 UTC.[1] The depression continued over favorable conditions as it was steered by a mid-level subtropical high-pressure area,[3] and on the same day at 12:00 UTC, the JTWC began issuing warnings on Tropical Depression 09W.[1] At 18:00 UTC, the PAGASA began issuing warnings on the tropical depression,[4] giving it the local name Florita 3 hours later at 21:00 UTC.[5]

On June 29 at 00:00 UTC, the JMA upgraded the depression to a tropical storm, giving it the name Prapiroon. Prapiroon had good upper-level outflow, though dry air present in the area negatively affected its development.[6] At 03:00 UTC the same day, the JTWC upgraded Prapiroon to a tropical storm as it was located approximately 440 nautical miles (815 km; 505 mi) south-southeast of Kadena Air Base.[7] Prapiroon then turned to the northwest,[8] and on July 1 at 00:00 UTC, the JMA upgraded Prapiroon to a severe tropical storm.[9] On the same day at 06:00 UTC, the PAGASA issued its final warning on Prapiroon as it exited the Philippine Area of Responsibility.[10] Later that day, a ragged eye became apparent,[11] and at 21:00 UTC, the JTWC upgraded Prapiroon to a typhoon.[12] Prapiroon continued developing aided by favorable conditions, and on July 2 at 00:00 UTC, the JMA upgraded Prapiroon to a typhoon.[13] At 18:00 UTC the same day, both the JMA and the JTWC assessed that Prapiroon had peaked in intensity, with 10-min winds of 65 knots (120 km/h; 75 mph), 1-min winds of 80 knots (150 km/h; 90 mph), and a minimum central pressure of 960 hectopascals (28 inHg).[14][15] After peaking, Prapiroon began to weaken and turn to the northeast, with the JMA downgrading it to a severe tropical storm on July 3 at 06:00 UTC as conditions for development became unfavorable.[16] The JTWC downgraded Prapiroon to a tropical storm at 15:00 UTC as its low-level circulation became exposed, with central convection becoming elongated.[17] Prapiroon's western semicircle became completely devoid of deep convection,[18] and by July 4 at 00:00 UTC, the JMA further downgraded it to a tropical storm.[19] The JMA later issued its final advisory on Prapiroon at 06:00 UTC as it became extratropical,[20][14] with the JTWC doing so later at 15:00 UTC.[21] Prapiroon's extratropical remnants dissipated just south of Hokkaido the next day.[14]

Impact

Japan

Five people were injured by the winds from the typhoon.[22] A woman was blown away by the strong winds of the typhoon and died at a hospital she was sent to later.[23] The typhoon also caused damages on Old Gorin Church, which as designated as heritage site four days prior, and caused damages to the stained glass in Kuroshima Catholic Church.[24] Agricultural damage in Okinawa Prefecture were about ¥49.39 million (US$446,000).[25]

South Korea

1 person from South Korea was killed by the storm; one other person was declared missing.[26]

See also

References

  1. 1 2 3 2018 Annual Tropical Cyclone Report (PDF) (Report). Pearl Harbor, Hawaii: Joint Typhoon Warning Center. Retrieved 2021-03-30.
  2. ↑ "WWJP25 RJTD 280000". tgftp.nws.noaa.gov. June 28, 2018. Archived from the original on 2018-06-21. Retrieved 2021-03-30.
  3. ↑ "RSMC Tropical Cyclone Prognostic Reasoning NO. 1 for TD Located at 19.8N 131.4E". tgftp.nws.noaa.gov. June 28, 2018. Archived from the original on 2018-07-12. Retrieved 2021-03-30.
  4. ↑ "TTT WARNING 01". tgftp.nws.noaa.gov. June 28, 2018. Archived from the original on 2018-11-13. Retrieved 2021-03-30.
  5. ↑ "Severe Weather Bulletin #1 For: Tropical Depression". pubfiles.pagasa.dost.gov.ph. June 29, 2018. Archived from the original (PDF) on 2018-06-29. Retrieved 2021-03-30.
  6. ↑ "RSMC Tropical Cyclone Prognostic Reasoning NO. 3 for TS 1807 Prapiroon (1807)". tgftp.nws.noaa.gov. June 29, 2018. Archived from the original on 2018-07-12. Retrieved 2021-04-02.
  7. ↑ "Prognostic Reasoning for Tropical Storm 09W (Prapiroon) Warning NR 03". tgftp.nws.noaa.gov. June 29, 2018. Archived from the original on 2018-06-13. Retrieved 2021-04-02.
  8. ↑ "Prognostic Reasoning for Tropical Storm 09W (Prapiroon) Warning NR 05". tgftp.nws.noaa.gov. June 29, 2018. Archived from the original on 2018-06-13. Retrieved 2021-04-02.
  9. ↑ "WTPQ20 RJTD 010000 RSMC TROPICAL CYCLONE ADVISORY". tgftp.nws.noaa.gov. July 1, 2018. Archived from the original on 2018-06-13. Retrieved 2021-04-02.
  10. ↑ "TTT STORM WARNING 11-FINAL". tgftp.nws.noaa.gov. July 1, 2018. Archived from the original on 2018-11-13. Retrieved 2021-04-03.
  11. ↑ "Prognostic Reasoning for Tropical Storm 09W (Prapiroon) Warning NR 13". tgftp.nws.noaa.gov. July 1, 2018. Archived from the original on 2018-06-13. Retrieved 2021-04-03.
  12. ↑ "Prognostic Reasoning for Typhoon 09W (Prapiroon) Warning NR 14". tgftp.nws.noaa.gov. July 1, 2018. Archived from the original on 2018-06-13. Retrieved 2021-04-03.
  13. ↑ "RSMC Tropical Cyclone Prognostic Reasoning NO. 15 for TY 1807 Prapiroon (1807)". tgftp.nws.noaa.gov. July 2, 2018. Archived from the original on 2018-07-12. Retrieved 2021-04-03.
  14. 1 2 3 Annual Report on the Activities of the RSMC Tokyo - Typhoon Center 2018 (PDF) (Report). Japan Meteorological Agency. 2019. p. 95. Retrieved 2021-04-03.
  15. ↑ "Western North Pacific Ocean Best Track Data". metoc.navy.mil. Retrieved 2021-04-03.
  16. ↑ "RSMC Tropical Cyclone Prognostic Reasoning NO. 20 for STS 1807 Prapiroon (1807)". tgftp.nws.noaa.gov. July 3, 2018. Archived from the original on 2018-07-12. Retrieved 2021-04-03.
  17. ↑ "Prognostic Reasoning for Tropical Storm 09W (Prapiroon) Warning NR 21". /tgftp.nws.noaa.gov. July 3, 2018. Archived from the original on 2018-06-13. Retrieved 2021-04-03.
  18. ↑ "Prognostic Reasoning for Tropical Storm 09W (Prapiroon) Warning NR 22". /tgftp.nws.noaa.gov. July 3, 2018. Archived from the original on 2018-06-13. Retrieved 2021-04-03.
  19. ↑ "RSMC Tropical Cyclone Prognostic Reasoning NO. 23 for STS 1807 Prapiroon (1807)". tgftp.nws.noaa.gov. July 4, 2018. Archived from the original on 2018-07-12. Retrieved 2021-04-03.
  20. ↑ "WTPQ20 RJTD 040600 RSMC TROPICAL CYCLONE ADVISORY". tgftp.nws.noaa.gov. July 4, 2018. Archived from the original on 2018-06-13. Retrieved 2021-04-03.
  21. ↑ "Tropical Storm 09W (Prapiroon) Warning NR 025". tgftp.nws.noaa.go. July 4, 2018. Archived from the original on 2018-06-13. Retrieved 2021-04-03.
  22. ↑ "台風7号 被害報告、県の災害警戒本部会議". 琉球新報. 2018-07-05. Retrieved 2018-07-09.
  23. ↑ "台風7号 農作業中の89歳女性転落死 強風にあおられ？". 毎日新聞. 2018-07-05. Retrieved 2018-07-05.
  24. ↑ "台風７号：長崎の「潜伏キリシタン」世界文化遺産で被害". 毎日新聞. 楽天インフォシークニュース. 2018-07-05. Retrieved 2018-07-07.
  25. ↑ 平成３０年台風第７号に係る被害状況等について（第７報）最終報 (PDF) (Report) (in Japanese). 沖縄総合事務局. July 4, 2018. Retrieved July 5, 2018.
  26. ↑ "1 dead, 1 missing as Typhoon Prapiroon approaches Korea". Koreaherald. July 2, 2018. Archived from the original on July 18, 2018. Retrieved July 5, 2018.
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