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This page was last loaded at 11:30 am HST Oct 31, 2014 (2130 GMT Oct 31, 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: Oct 31, 2014 8:30 AM HST

Based on data through 8:00 am Oct 31 2014 HST

Water vapor imagery showed an upper level low near 19°N 158°W or about 140 miles south of Honolulu. The low was moving south near 10 miles an hour. The low was spawning a handful of isolated thunderstorms immediately northeast of Maui and Molokai. Storm tops were up near 40000 feet. The storms appeared to be drifting toward the southwest, slowly nearing Maui county. Another very small cluster of isolated thunderstorms was observed near 22°N 169°W. These storms were moving westward.

A broad, northeast to southwest aligned, upper trough was encompassing the upper low. The trough axis stretched roughly from 27°N 142°W to the upper low and continued southwest to near 13°N 168°W. The southwest wind flow along the south side of the trough was carrying a swath of broken cirrus clouds along with it.

The northern edge of a 275 miles wide swath of cirrus extended from 12°N 158°W through 22°N 140°W the narrowed as it continued beyond 23°N 130°W. This stream of cirrus was about 225 miles southeast of the Big Island.

Strong trade winds continued to sweep patches and larger clusters of low clouds through the Hawaiian islands region. Most of the showery low clouds between 18°N and 23°N from 140°W to 160°W were the fragmented remnants of an old frontal cloud band. The still intact front could be seen far to the northeast stretching from 25°N 134°W up through 30°N 125°W.

At 8 am, cloudy to mostly cloudy skies prevailed from Kauai to Maui, mostly along the windward and mountain sections. The lee sides of these islands were seeing somewhat fewer clouds overhead. The Big Island was mostly sunny, except for some overcast low clouds over the Hilo and Puna districts. The low clouds near the state were moving west at 30 miles an hour. Cloud tops near the islands were mostly between 10000 and 13000 feet.

Hawaii Infrared Satellite image for 1800 UTC

Central Pacific Infrared Satellite image for 1800 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 VANCE Forecast Advisory Number 7
Issued at 2100 UTC FRI OCT 31 2014

Eastern Pacific Graphical Tropical Weather Outlook

1100 AM PDT FRI OCT 31 2014

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

The National Hurricane Center is issuing advisories on Tropical
Storm Vance, located several hundred miles south of Acapulco,

A broad area of low pressure has formed about 1150 miles southwest
of the southern tip of the Baja California peninsula. Some gradual
development of this system is possible before upper-level winds
become less favorable early next week. The low is expected to move
toward the west-southwest at 5 to 10 mph over the next few days.
* Formation chance through 48 hours...low..10 percent.
* Formation chance through 5 days...low...20 percent.

Eastern Pacific Graphical Tropical Weather Outlook

Monitored by the National Hurricane Center (NHC)


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