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This page was last loaded at 3:34 am HST Sep 17, 2014 (1334 GMT Sep 17, 2014)

Central Pacific (140W to 180) xml button

Tropical Outlook Sea Surface Temperatures CPAC Satellite EPAC Satellite Widgets Satellite Message Forecast Discussion

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Issued: Sep 17, 2014 2:30 AM HST

Based on data through 2:00 am Sep 17 2014 HST

A trio of mid to upper level systems remain evident on water vapor imagery overnight in the central Pacific. The complex low remains far northeast of the islands, with the low about 2115 miles to the northeast at 2 am. Isolated thunderstorms continue be found near the low with tops reaching near 36000 feet. This system continues to lift to the north and east, moving away from the islands overnight.

Water vapor shows a nearly stationary mid to upper level circulation remaining over Kauai overnight. The final system is centered about 1330 miles west of Honolulu near 21.7°N 178.6°W. This low has thunderstorms with tops near 40000 feet near the center. This system has been moving to the west slowly, away from the main Hawaiian islands.

In general, low clouds have thinned over the main Hawaiian islands since sunset. The area of clouds that stretched from Kauai to Oahu has broken up, leaving behind scattered clouds along the southern portion of Kauai and the adjacent waters. Similarly.scattered to broken low clouds remain over the northern and western portions of Oahu, and over the adjacent waters. A few clouds are found over the northern half of Kauai, and few to scattered clouds are found over the Koolau range on Oahu.

The clouds near and over the islands of Maui county at sunset have all but disappeared. Just a few clouds are noted over Maui county at 2 am. Similarly, the clouds over the Big Island have dissipated significantly since sunset. It appears on infrared imagery that scattered clouds remain over the Kau and south Kona districts, with just a few clouds elsewhere.

Hawaii Infrared Satellite image for 1200 UTC

Central Pacific Infrared Satellite image for 1200 UTC

Western Pacific (West of 180)

Monitored by the:
Joint Typhoon Warning Center
Japan Meteorological Agency

Eastern Pacific (East of 140W) xml button

Active Systems

xml button  Tropical Storm POLO Forecast Advisory Number 5
Issued at 0900 UTC WED SEP 17 2014

xml button  Tropical Storm ODILE Forecast Advisory Number 29
Issued at 0900 UTC WED SEP 17 2014

Eastern Pacific Graphical Tropical Weather Outlook

500 AM PDT WED SEP 17 2014

For the eastern North Pacific...east of 140 degrees west longitude:

The National Hurricane Center is issuing advisories on Tropical
Storm Odile, located over the northern Gulf of California, and on
Tropical Storm Polo, located a couple of hundred miles south of
Zihuatanejo, Mexico.

Tropical cyclone formation is not expected during the next 5 days.

Eastern Pacific Graphical Tropical Weather Outlook

Monitored by the National Hurricane Center (NHC)


Hurricane Preparedness

State of Hawaii Civil Defense
Oahu Department of Emergency Management
Kauai Civil Defense
Maui Civil Defense
Hawaii (Big Island) Civil Defense

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Saffir-Simpson Scale
  • Tropical Storm - winds 39-73 mph (34-63 kt)
  • Category 1 - winds 74-95 mph (64-82 kt)
  • Category 2 - winds 96-110 mph (83-95 kt)
  • Category 3 - winds 111-129 mph (96-112 kt)
  • Category 4 - winds 130-156 mph (113-136 kt)
  • Category 5 - winds 157 mph and up (137+ kt)
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