Forecast Monday to Tuesday:
Windy conditions will persist through Monday through at least the first half of Tuesday. A wind warning has been issued for many locations in Hawaii. Expect wind speeds of 25 to 30 mph at lower elevations with gusts up to 40 mph. Wind gusts of up to 60 km/h are expected on the summits.
Due to the high wind speeds, the National Weather Service has issued several weather warnings. A red flag warning was issued for most leeward areas on all islands by 1800. A red flag warning is issued when low relative humidity and strong winds are expected. Due to the fires in Lahaina and Pahala, this is the worst time for this type of weather. The Pahala area may see a few scattered showers today but not much rain, while Maui’s leeward areas will most likely remain dry with humidity levels up to 35%.
The NWS has also issued a gale warning for the Alenuihaha and Pailolo Channels through 6pm Monday, with expected winds of 25-35 kts and sea elevations of up to 11 feet. A high surf warning was also issued for the north and west-facing shores of Molokai, Oahu and Kauai through 6 a.m. Tuesday, with 12 to 16 feet for the north-facing shores and 8 to 12 feet for the west directed coasts of these islands are expected.
Also, until 6pm tonight, a small craft notice has been issued for all waters except those under the Channel’s storm warning areas. A gale warning has also been issued for offshore waters beyond 40NM until 6pm tonight. It will still be windy early Tuesday, but winds will moderate during Tuesday and into Wednesday.
Thanksgiving Day and weekend forecast:
However, this is only the first round of windy conditions as a fairly strong cold front is set to sweep across Hawaii from early Thursday. Although winds will weaken on Tuesday evening and pick up again by Wednesday for Thanksgiving, these winds will be even stronger. There will be some widespread rain associated with this cold front, but the more serious problem will once again be the strong winds.
Sustained wind speeds of 25-35mph are expected with possible gusts of up to 50mph. If you haven’t put up any Christmas decorations outside yet, you might want to wait until this weekend, especially Sunday, to do so. Winds will be much lighter on Saturday after another windy day on Friday, but winds are expected to be only around five to 10 miles per hour on Sunday. You should also bring in or tie down items such as trash cans and other lawn items that are light enough to be blown away.