A drier and more stable trade wind pattern is expected through the weekend and into early next week. Showers should be mostly focused along windward and mauka locations through the period.
Looking at radar and satellite, typical trade wind clouds are streaming in from the east-northeast. Expect scattered windward and mauka showers across all islands for the next several days especially in the late evening and overnight hours. Northeast winds will remain elevated and gusty through tonight but should begin to ease some tomorrow into tomorrow evening.
An upper low will swing by to the northeast and push a fairly dry cold front through Thursday night through Saturday night, bringing even more drier air to the state. At this time, the forecast is for dewpoints in the mid 50s Saturday night, with upper 50s both Friday and Sunday nights. Looks like a cool weekend in store.
Mostly dry and breezy northeast trade wind conditions will prevail across the island chain over the next 24 h. As a result, AIRMET Tango continues for low-level turbulence across leeward areas of all islands. Brief periods with MVFR CIGS/VSBYS are possible in passing showers, mostly through the early morning hours today.
A low pressure system north-northeast of the islands and a high pressure system to the north-northwest of the Hawaii region will keep northeasterly trade winds in the forecast through the week.A Small Craft Advisory (SCA) has decreased in coverage to most eastern coastal waters through early Thursday morning for winds. Winds will briefly ease on Thursday and Friday, likely falling below SCA thresholds. A new high pressure develops far northwest of Hawaii by Friday night, strengthening trade winds into the fresh to strong range this weekend with returning SCA conditions from Saturday into the first half of next week.
A short to medium period north-northeast swell will slowly decline today. The forerunners of another small northwest swell will arrive at the buoys later today, with the medium period swell peaking around 3 feet on Thursday, before gradually declining through the weekend. For east facing shores, short period wind wave energy from northeasterly trade winds will hold into the weekend. Strengthening northeasterly winds this weekend and potential gales associated with a low around one thousand miles northeast of the islands will lead to the potential for high surf advisories along north and east facing shores from Sunday into early next week.
For south facing shores, small background energy pulses will keep surf heights just above flat conditions into early next week.
Small Craft Advisory until 6 AM HST early this morning for Kauai Northwest Waters-Kauai Windward Waters-Kauai Leeward Waters- Kauai Channel-Oahu Windward Waters-Oahu Leeward Waters-Kaiwi Channel-Maui County Windward Waters.
Small Craft Advisory until 6 AM HST Thursday for Maui County Leeward Waters-Maalaea Bay-Pailolo Channel-Alenuihaha Channel- Big Island Windward Waters-Big Island Leeward Waters-Big Island Southeast Waters.
