For the immediate Hawai`i area, products issued are Terminal Aerodrome Forecasts (TAFs), area forecasts, upper level wind and temperature forecasts, and AIRMETs (AIR pilots METeorological information) for low clouds, turbulence, and icing. In addition, the Honolulu forecast office is an aviation Meteorological Watch Office that covers approximately 8,650,800 square miles. See Aviation Area Map.
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Aviation section from the Area Forecast Discussion
issued at: May 25, 2016 3:25 PM HST
Frequent MVFR conditions and isolated IFR conditions will continue into at least the early evening. Low level moisture is greatest from Oahu to the Big Island, and showers and the most widespread ceiling and visibility restrictions are located through this area. Occasional MVFR conditions will also occur over Kauai, but will diminish faster this evening. Water vapor imagery shows a sharpening upper level trough swinging across the state, which will continue to enhance convection. An AIRMET for mountain obscuration is currently in effect from Oahu to the Big Island. Conditions will begin to improve after sunset, but windward sections may still hold onto some showers and MVFR conditions overnight. Due to the existing instability and support from the upper level trough, there is also a slight chance of thunderstorms into the evening over the eastern half of the state.
Wind shear associated with the upper level trough may lead to some high level clear air turbulence. Model guidance indicates that the CAT potential has diminished and will continue to do so through the evening. However, recent darkening/drying apparent in water vapor imagery would indicate a greater turbulence potential. Therefore we will hold onto the turbulence AIRMET for now.
- SIGMETs (issued as needed)
- Terminal Aerodrome Forecasts (TAFs)
- Area Forecast for Hawaii and adjacent coastal waters
- Wind and Temperature Aloft Forecast for Honolulu, Lanai, Hilo, Lihue, Kahului and Kona
- Wind and Temperature Aloft Forecast for other Pacific locations
- FYI/Help for Forecast Winds and Temperatures Aloft
- AIRMETs for IFR conditions, turbulence, and icing
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