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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: Aug 21, 2018 4:26 PM HST

The pressure gradient will tighten with the northeast Pacific high to the north and Hurricane Lane approaching from the south. This will result in increased wind speeds and gusts. This will be especially true for the Big Island, Maui, Lanai and Molokai and will affect Oahu and Kauai to a lesser extent tonight and through Wednesday. There is already an AIRMET in place for TEMPO moderate turbulence below eight thousand feet on the leeward side of the mountains with the strongest turbulence on the Big Island and slightly weakening from the Big Island northwest to Kauai. This turbulence will almost certainly be in place at least through Wednesday into Wednesday night. This would only change if Hurricane Lane somehow did not follow the current forecast and remained on a westerly heading, which is extremely unlikely.

The best chance for clouds and showers will be on the Big Island and Maui through the day Wednesday as Hurricane Lane approaches from the southeast. The best chance for MVFR conditions and mountain obscuration will be on these islands, with an increasing chance for MVFR conditions as we progress through the period into Wednesday night. Otherwise expect VFR conditions for the rest of the state.

AIRMET Tango in place for low level turbulence below eight thousand feet.

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