Issued: May 05, 2015 7:30 PM HST
Based on data through 7:00 pm May 05 2015 HST
High pressure far northeast of the state continues to supply the Hawaiian islands with cooling trade winds. These trades are carrying low clouds westward at 15 to 20 mph. Satellite imagery shows a broken area of clouds exiting Kauai and Niihau, and another one approaching Maui and the central islands. The leading edge of this field approaching Maui is 35 miles east of Hana. This area is shaped as a east to west oriented band that is 300 miles long and 80 miles wide. Expect this band to miss the Big Island and affect the smaller islands later tonight through Wednesday morning.
At sunset, relatively dry conditions prevail across all of the smaller islands with locally broken clouds favoring the windward and mountain areas. As for the Big Island, broken to overcast low clouds covered the Hamakua coast of the Big Island. These clouds extended to 20 miles off the coastline, and also down the coast to the Puna district. Overcast low clouds covered the rest of the slopes from the Volcano area to South Point and continued up the Kona coast finally ending at Kawaihae. To waikoloa. Broken to overcast low clouds were also present in both the humuula and Waimea saddles. Overcast low clouds also extended out to 35 miles off the Kona coast. The low clouds had a height of about 9k feet. Otherwise, fair skies ruled the rest of the Big Island.
Elsewhere immediately around the main Hawaiian island, low cloud coverage becomes generally broken east of 150°W or 300 miles east of the Big Island. Broken low clouds are also present southeast to south of the Big Island. The low clouds just exiting Kauai county is part of a larger cloud mass extending to 400 miles north northwest and to 200 miles south southwest of Kauai. This cloud mass had a width of 170 miles.
Elsewhere on satellite, a front is located 740 miles northwest of Kauai with the coordinates of 30°N 167°W 27°N 172°W 25°N 180°W. Portion of the front east of 175°W is drifting eastward slowly while the remaining portion is stationary. Broken stable low clouds ruled the area north of the front which also included Midway atoll.
In the tropics, a cluster of moderate to strong thunderstorms is located 1020 miles southeast of the Big Island, between 143°W and 151°W from 06°N to 02°N. The storms had a height of 57k feet. Widely scattered thunderstorms ruled the area south of 10°N between the dateline and 165°W.