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This page was last loaded at 2:16 pm HST Aug 30, 2014 (016 GMT Aug 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: Aug 30, 2014 8:30 AM HST

Based on data through 8:00 am Aug 30 2014 HST

A weak, disorganized trade wind flow remained unsettled across the Hawaiian islands. High pressure far north of the state was fairly weak. And a surface low pressure system, the remnant of once hurricane Marie, Sat just about 1550 miles northeast of Honolulu.

Several weak low cloud circulations or vortices passing through the region were helping to disrupt the trade wind flow. One low cloud circulation was centered about 60 miles northeast of Kahului Maui. Another was near 23°N 150°W. And another was centered further north near 31°N 155°W.

A large cluster of showery, broken low clouds associated with the cloud circulation just northeast of Maui covered much of the area from 21°N to 23°N between 153°W and 156°W. A large cluster of broken to overcast low clouds, most of them associated with a Big Island cloud plume, covered much of the area from 18°N to 19°N between 156°W and 158°W.

At 8 am, the south tip of the Big Island was mostly cloudy, as was the northeast coast of Maui. A smattering of low clouds lined the Koolau range on Oahu and even less was seen over east Kauai. The rest of the state was mostly sunny. Low clouds in the area were moving west at just under 15 miles an hour. However, those clouds just west of the circulation center near Maui were flowing southwestward into the valley isle.

Water vapor imagery showed an upper low near 31°N 163°W. The low was nearly stationary. A weak trough extended from the low through 30°N 162°W to 26°N 167°W. A few, small, relatively weak, isolated, thunderstorms were forming just southeast of the low near 29°N 161°W.

Hawaii Visible 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

Eastern Pacific Graphical Tropical Weather Outlook

500 PM PDT SAT AUG 30 2014

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

An area of low pressure could form early next week within a few
hundred miles offshore of the coast of south-central Mexico. Some
slow development of this system is possible after this time while it
moves slowly northwestward close to the coast of southwestern
* Formation chance through 48 hours...low...near 0 percent.
* Formation chance through 5 days...low...20 percent.

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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