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This page was last loaded at 7:42 am HST Aug 22, 2014 (1742 GMT Aug 22, 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 22, 2014 2:30 AM HST

Based on data through 2:00 am Aug 22 2014 HST

The main Hawaiian islands continues to be influence by a trade wind flow with speeds between 15 and 20 mph.

The satellite loop of the past few hours shows patches of low clouds moving through Kauai and Niihau from the east. A few light showers are noted with these clouds.

The fair skies over Oahu, Molokai, and Maui are being threatened by some approaching low clouds from the northeast. First to be affected will be Maui in the next hour followed by Molokai, and Oahu. Windward Big Island is already being influenced by these clouds resulting in mostly cloudy skies especially in the Hilo and Puna districts. Weather radar is detecting a few light showers with these clouds.

While clouds from Wednesday afternoon continued to hang onto the Kona coast between Kailua Kona town and Milolii, other areas such as the Kau and Kona slopes, have dissipated. Weather radar is picking up a few moderate showers over the waters just west of Kona airport. Otherwise, fair skies ruled the remainder of the main Hawaiian islands.

On the far northwest corner of the satellite imagery of the central north Pacific, an ill defined front is located west of Midway atoll.

Convective activity has increased in the tropics south of the Hawaiian islands during the past seven hours. Isolated deep convection is confined to an area between 10°N and 05°N from 160°W to 165°W. It has a cloud top of 51000 feet. A string of cumulonimbus clouds is noted within 70 mile either side of a line from 12°N 145°W to 10°N 156°W to 14°N 165°W.

The other area of deep convection near 14°N 136°W, belongs to tropical storm Karina.

Water vapor imagery shows an upper level trough north of the main Hawaiian islands from 30°N 149°W to 25°N 152°W to 23°N 156°W to 24°N 161°W. The trough continues to slide southeast at near 10 mph.

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 KARINA Forecast Advisory Number 39
Issued at 1500 UTC FRI AUG 22 2014

xml button  Tropical Storm LOWELL Forecast Advisory Number 19
Issued at 1500 UTC FRI AUG 22 2014

xml button  Tropical Storm MARIE Forecast Advisory Number 3
Issued at 1500 UTC FRI AUG 22 2014

Eastern Pacific Graphical Tropical Weather Outlook

500 AM PDT FRI AUG 22 2014

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

The National Hurricane Center is issuing advisories on Tropical
Storm Karina, located more than a thousand miles east-southeast of
the Big Island of Hawaii; on Tropical Storm Lowell, located about
900 miles west of the southern tip of the Baja California peninsula;
and on recently upgraded Tropical Storm Marie, located a few
hundred miles south-southwest of Acapulco, Mexico.

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

Public Advisories on Tropical Storm Marie are issued under
WMO header WTPZ33 KNHC and under AWIPS header MIATCPEP3.
Forecast/Advisories are issued under WMO header WTPZ23 KNHC and
under AWIPS header MIATCMEP3.

Eastern Pacific Graphical Tropical Weather Outlook

Monitored by the National Hurricane Center (NHC)


Hurricane Preparedness

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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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