![]() Elsewhere, a frontal boundary continues to meander north and northwest of the state. VFR conditions will dominate statewide, but AIRMET Sierra may be needed from time to time for mountain obscuration.Ī weakening surface ridge extends over the smaller islands from a surface high to the east of the state. Scattered high clouds will pass over the islands from time to time due to the front's proximity to the north. Expect cloud buildups during the afternoon and evening with mostly dry conditions. Light to moderate southerly to southeasterly flow will continue across the islands today as a frontal boundary lingers to the north and a surface ridge meanders over the eastern end of the state. Scattered showers will spread to windward areas statewide by Friday as winds strengthen to a more easterly trade wind direction lasting into next weekend. Increasing shower trends will start over the windward and southeast slopes of the Big Island, East Maui and Kauai, then spread to windward sections of all islands later in the week.īy Wednesday long range global model solutions show the trough northwest of the islands begins to approach Kauai at the western end of the state, possibly producing a few convergent shower bands near Kauai and Oahu for the Wednesday to Thursday time periods. Increasing east to southeast wind flow allowing brief periods of showers to return to the islands from Tuesday through Friday. The development of this surface low will initiate a weather pattern shift, from light southerly winds to moderate east to southeast winds by Tuesday.īy Tuesday, the ridge over the islands will weaken as the surface low deepens and drifts slowly north. This surface low will deepen and initially drift northwest, away from the islands and towards the upper low center. Divergence aloft ahead of this cut off low will cause a surface low to form along the remnants of the old stationary front northwest of Kauai. A strong upper level trough approaching the Hawaii region from the northwest stalls out and forms a cold core upper low. On Monday this stable light wind pattern begins to change. A subtropical jet stream northwest of the island chain will continue to advect periods of high level cirrus clouds over all islands through next week, likely enhancing sunrise and sunset colors across the region. Expect continued light winds with afternoon sea breezes lasting into Monday with only isolated showers possible over most islands. These low trade wind inversion heights will limit vertical cloud development and shower activity. Trade wind temperature inversion heights remain in the 5,000 to 7,000 foot range as reported by the 2 AM HST upper air balloon soundings at Lihue and Hilo. Light southerly winds will continue with dry weather conditions under a high pressure ridge aloft. The large scale weather pattern remains unchanged this morning with a surface ridge over the islands and a weakening stationary front northwest to north of the state. Shower trends will gradually increase from Tuesday through Friday in moderate to locally breezy east to southeast wind flow. ![]() ![]() This deepening surface low will increase east to southeast winds over the region from Monday through Wednesday. A surface low develops along the dissipated frontal trough northwest of the islands on Monday. A surface ridge over the Hawaiian Islands and a weakening stationary front northwest to north of the state will keep a stable light southerly wind pattern over the region through Monday.
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