Weather Forecast

Hawaii County Weather Forecast for February 25, 2024

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Hilo

Today: Occasional showers. Highs 72 to 78 near the shore to 57 to 62 at 4000 feet. Northeast winds 10 to 15 mph. Chance of rain near 100 percent.

Tonight: Occasional showers. Lows 57 to 63 near the shore to around 50 at 4000 feet. Northeast winds 10 to 15 mph decreasing to up to 10 mph after midnight. Chance of rain near 100 percent.

Monday: Occasional showers in the morning, then numerous showers in the afternoon. Highs 74 to 79 near the shore to around 61 at 4000 feet. Northeast winds up to 15 mph increasing to 10 to 15 mph in the afternoon. Chance of rain near 100 percent.

Kona

Today: Mostly sunny with isolated showers in the morning, then partly sunny with scattered showers in the afternoon. Highs 78 to 83 near the shore to around 61 near 5000 feet. East winds around 10 mph shifting to the west up to 10 mph in the afternoon. Chance of rain 50 percent.

Tonight: Mostly clear. Isolated showers in the evening. Lows around 67 near the shore to 42 to 49 near 5000 feet. Southeast winds up to 10 mph. Chance of rain 20 percent.

ARTICLE CONTINUES BELOW AD
ARTICLE CONTINUES BELOW AD

Monday: Sunny in the morning, then partly sunny with scattered showers in the afternoon. Highs 78 to 83 near the shore to around 62 near 5000 feet. Southeast winds up to 10 mph shifting to the west in the afternoon. Chance of rain 40 percent.

Waimea

Today: Breezy. Mostly cloudy with numerous showers. Highs around 74 near the shore to 62 to 69 near 3000 feet. East winds 10 to 25 mph with gusts to 45 mph. Chance of rain 70 percent.

Tonight: Mostly cloudy. Breezy. Numerous showers in the evening, then scattered showers after midnight. Lows 57 to 66 near the shore to 48 to 55 near 3000 feet. East winds 10 to 25 mph. Chance of rain 70 percent.

Monday: Breezy. Mostly sunny with scattered showers. Highs around 75 near the shore to 63 to 70 near 3000 feet. East winds 10 to 25 mph. Chance of rain 50 percent.

Kohala

Today: Breezy. Mostly cloudy with numerous showers. Highs around 74 near the shore to 62 to 69 near 3000 feet. East winds 10 to 25 mph with gusts to 45 mph. Chance of rain 70 percent.

ARTICLE CONTINUES BELOW AD

Tonight: Mostly cloudy. Breezy. Numerous showers in the evening, then scattered showers after midnight. Lows 57 to 66 near the shore to 48 to 55 near 3000 feet. East winds 10 to 25 mph. Chance of rain 70 percent.

Monday: Breezy. Mostly sunny with scattered showers. Highs around 75 near the shore to 63 to 70 near 3000 feet. East winds 10 to 25 mph. Chance of rain 50 percent.

South Big Island

Today: Mostly sunny. Breezy. Scattered showers in the afternoon. Highs around 79 near the shore to around 62 near 5000 feet. East winds 10 to 25 mph. Chance of rain 50 percent.

Tonight: Mostly clear. Breezy. Lows around 68 near the shore to around 46 near 5000 feet. East winds 10 to 20 mph.

Monday: Mostly sunny. Breezy. Highs around 79 near the shore to around 62 near 5000 feet. East winds 10 to 25 mph.

Puna

ARTICLE CONTINUES BELOW AD

Today: Occasional showers. Highs 72 to 78 near the shore to 57 to 62 at 4000 feet. Northeast winds 10 to 15 mph. Chance of rain near 100 percent.

Tonight: Occasional showers. Lows 57 to 63 near the shore to around 50 at 4000 feet. Northeast winds 10 to 15 mph decreasing to up to 10 mph after midnight. Chance of rain near 100 percent.

Monday: Occasional showers in the morning, then numerous showers in the afternoon. Highs 74 to 79 near the shore to around 61 at 4000 feet. Northeast winds up to 15 mph increasing to 10 to 15 mph in the afternoon. Chance of rain near 100 percent.

Waikoloa

Today: Sunny and breezy. Isolated showers in the afternoon. Highs 76 to 83 near the shore to around 63 above 4000 feet. East winds 10 to 25 mph shifting to the northeast 10 to 15 mph in the afternoon. Gusts up to 45 mph. Chance of rain 20 percent.

Tonight: Mostly clear. Lows around 67 near the shore to 44 to 50 above 4000 feet. East winds 10 to 15 mph.

Monday: Mostly sunny. Highs 77 to 82 near the shore to around 63 above 4000 feet. East winds 10 to 15 mph shifting to the northeast in the afternoon. Gusts up to 40 mph.

Detailed Forecast

Synopsis

High pressure to the north of the main Hawaiian Islands will continue to drive locally windy trade winds through much of the week. Clouds and showers will favor windward and mauka areas, with stronger winds helping to carry some showers to leeward areas.

Discussion

Strong high pressure far north of the main Hawaiian Islands continues to drive breezy to windy conditions across local waters this morning. Windy trades are expected for the next several days and a Wind Advisory remains in effect for portions of Maui County and the Big Island. The areas most likely to see advisory level winds include the Kohala Mountains on the Big Island, the central valley of Maui and over ridges and through gaps on Molokai, Lanai and Kahoolawe. Models suggest that advisory level winds could occur on Oahu, but confidence is too low to include that island in the Wind Advisory at this time. Nevertheless, winds will be quite breezy there.
Satellite loop shows bands of broken low clouds riding in on the trades, with radar confirming isolated to scattered moderate showers beneath this cloud cover. These bands continue at intervals far to the east of the islands, so expect increased windward showers over the next day or so as each band passes by. Stronger trade winds will push some of these showers across leeward areas from time to time. A subtropical jetstream, marked by the persistent pall of middle and high clouds, remains over the islands and may enhance showers due to improved venting aloft.
By late next week, models show an upper trough moving over the islands from the northwest, introducing a pool of destabilizing cold air aloft. At the surface, high pressure will remain north of the state and trade winds will persist at the surface. However, associated trade showers may be heavier and more widespread as the upper trough moves in.

Aviation

Breezy to locally windy easterly trade winds will remain in place over the next several days and will focus showers primarily over windward and mountain areas. Latest satellite imagery early this morning shows bands of broken low clouds upstream of the islands that are moving westward towards the state. These bands will maintain increased windward showers over the next 24 hours or so. While VFR flight conditions will prevail for the most part, occasional MVFR is expected as these bands move through.
AIRMET Tango remains in effect for moderate low-level turbulence, and this AIRMET will likely be needed throughout the next several days. AIRMET Sierra may be needed later this morning for mountain obscuration across north through east facing slopes and coasts as low clouds move through.

Marine

An area of large high pressure centered approximately 1,100 nautical miles north of the islands is producing a tight enough pressure gradient back toward the state to sustain fresh to locally strong trade winds. Little overall change in the Central Pacific weather pattern will occur in the coming days as the high remains anchored north of the area and maintains these winds for several days. A Small Craft Advisory (SCA) remains in effect for all Hawaiian nearshore waters primarily due to these winds but also for relatively higher seas produced by the passage of both a northwest and northeast swell. Little change in the overall nature of these stronger trades and agitated seas with passing swells has the all-water SCA now in effect through (at least) Tuesday night. Winds may trend down a touch going into the middle of next week as the high gets replaced by another slightly weaker high to the northwest and moves closer to the islands.
The moderate size, long period northwest (320 degree) swell that peaked yesterday will continue to gradually fall off through early Monday. This swell decline has allowed the High Surf Advisory (HSA) to expire along north and west-facing shores. North shore surf will remain elevated the next few days with eastern exposure surf on the rise as a fairly large, medium period east northeast (40-60 degree) swell from a close proximity gale low arrives Monday. East-facing shore surf heights will likely achieve HSA levels, with surf potentially reaching warning levels, as this ENE swell peaks Monday night into Tuesday. Days of fresh to locally strong trades has produced a rough, short period wind wave, and these rough conditions are expected to continue along eastern shores with no substantial break in the trades. Eastern passing southern hemispheric gale lows will produce swell energy that may eventually make it into our local waters late this week. South-facing shore surf will probably increase by another foot or two with the arrival of these small, long period south swells.

HFO Watches/Warnings/Advisories

Wind Advisory until 6 PM HST this evening for Kahoolawe, Maui Windward West, Kohala, Molokai, Lanai Windward, Lanai Leeward, Maui Central Valley North, Maui Central Valley South, Kipahulu, Big Island North.
Small Craft Advisory until 6 AM HST Wednesday for all Hawaiian waters,

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Data Courtesy of NOAA.gov

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