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Aviation section from the Area Forecast Discussion
issued at: Feb 20, 2019 8:34 PM HST

A surface trough will remain nearly stationary just east of the Big Island overnight. Clouds continues to come and go over that island, and there are a few showers at times brushing the Puna coastline. Satellite imagery and radar is picking up more mid level clouds, between 11k and 15k feet, approaching the Big Island from the south. Some of the low clouds is drifting over from northern Big Island to adjacent eastern Maui. Do expect most of these clouds to linger over these locations overnight and into Thursday. A shower or two may also spring up, mainly over the waters overnight. Elsewhere looks even better with fair skies. There was an isolated shower west of Wailua, Kauai, but this shower is in the dissipating stage. We are anticipating a dry evening overall, although the cloud cover will be thicker over the Big Island.

The surface trough is expected to ease back to the Big Island on Thursday. This will up the prospect for showers across the Big Island and Maui, especially in the afternoon.

Light winds will prevail across the area through Thursday. A land breeze will dominate the wind flow overnight, then with daytime heating, an onshore sea breeze fills in, leading to some afternoon clouds over the land areas. As noted above, showers are expected to affect primarily the Big Island, followed by Maui. Only isolated showers are expected for the remaining islands Thursday afternoon. The tops of the clouds are expected to rise from 6k feet over Kauai to 12k feet over Maui to 20k over the Big Island.

No AIRMET in effect, and none is expected through Thursday morning.

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