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64 th Interdepartmental Hurricane Conference

64 th Interdepartmental Hurricane Conference. 2009 Central Pacific Hurricane Season and 2010 Changes. Jim Weyman, Director Central Pacific Hurricane Center. Central Pacific 2009 Hurricane Season. Seven tropical cyclones occurred Greater than the long-term average of 4 to 5

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64 th Interdepartmental Hurricane Conference

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  1. 64th Interdepartmental Hurricane Conference 2009 Central Pacific Hurricane Season and 2010 Changes Jim Weyman, Director Central Pacific Hurricane Center

  2. Central Pacific 2009 Hurricane Season • Seven tropical cyclones occurred • Greater than the long-term average of 4 to 5 • Three hurricanes, one of them major • Three tropical storms • One tropical depression

  3. Central Pacific 2009 Hurricane Season • Three formed in basin, four moved in from east • Six of the cyclones occurred in very late July and in August, with the other in October • No fatalities or significant damages

  4. MH Neki 18-26 Oct H Guillermo 16-19 Aug H Felicia 8-11 Aug TS Maka 10-12 Aug TS Lana 30 Jul – 3 Aug TS Hilda 23-27 Aug TD Two-C 28-29 Aug 2009 Central North Pacific Tropical Cyclone Tracks (Preliminary) (dates within the basin)

  5. Felicia Images

  6. Felicia Highlights • Extensive public and media attention • Air Force C-130s and NOAA G-IV tasked • Tropical storm watches issued for portions of Hawaii, but no tropical storm warnings • Wind speed/intensity probabilities used

  7. Felicia Highlights • Remnants produced heavy rains and some flooding in Hawaii • 3 to 6 inches widespread across several islands • Maximum rainfall near 14 inches on Kauai and Oahu • Flash floods on Oahu

  8. Hurricane Neki – 105 knots

  9. MH Neki 18-26 Oct H Guillermo 16-19 Aug H Felicia 8-11 Aug TS Maka 10-12 Aug TS Lana 30 Jul – 3 Aug TS Hilda 23-27 Aug TD Two-C 28-29 Aug 2009 Central North Pacific Tropical Cyclone Tracks (Preliminary) (dates within the basin)

  10. Hurricane Neki Highlights • Peak intensity 105 knots (category 3) • Only major hurricane in in 2009 • Hurricane watch for Johnston Island • Hurricane watches and warnings for portions of Northwestern Hawaiian Islands

  11. Hurricane Neki Highlights • Evacuations via NOAA ship and Coast Guard C-130 • Impacted the area as a strong tropical storm • No impacts in main Hawaiian Islands

  12. 2009 CPHC Operational Changes • Lead times for tropical storm and hurricane watches and warnings extended to 48 and 36 hours • Experimental color-coded Graphical Tropical Weather Outlook (Low, Medium, and High)

  13. CPHC and FEMA Hurricane Course April 2009 23-25 February 2010

  14. Catastrophic Hurricane Plan 4A, 4B 2A, 2B 5A 3A, 3B 1A, 1B, 1C, 1D, 1E

  15. New for 2010 • Tropical Cyclone Public Advisory Format Changed – More Readable • …Headline • …Tropical Cyclone Summary • …Watches and Warnings • …Discussion and 48-Hour Outlook • …Hazards Affecting Land • …Next Advisory

  16. New for 2010 Tropical Weather Outlook • Issued at 0200, 0800,1400, and 2200 HST • Three hours earlier than previously • Probabilities of Development in Percentages Low (0 – 20%), Medium (30-50%), and High (60-100%)

  17. Questions? James.weyman@noaa.gov 808-973-5272

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