Last Updated on Tuesday, 21 May 2013 22:50
Issued: May 22, 2013 2:30 AM HST
The upper level low north of the islands is near 31.6°N 155.9°W, about 725 miles north northeast of Honolulu at 2 am. The low had been moving to the north shortly after sunset, but around midnight starting to moving in a more northeasterly direction. The resulting upper level trough axis extends from the low to a point near 23.3°N 157.3°W. A few isolated thunderstorms were found on the east side of the upper low around 10 pm. As of 2 am, cloud tops on the east side are reaching near 43000 feet. As the upper low has lifted north, so to have the high clouds that were moving over the main Hawaiian islands from the southwest. High clouds are moving from south to north east of the Big Island near 150°W.
Low clouds near the islands are moving in from the southeast, while mid level clouds are moving in a moving in from a more southerly direction.
Clouds remain plentiful over Kauai at 2 am, but have decreased over the waters immediately surrounding the garden isle. On Oahu, clouds are found over most of the island with the southeast portion of the island having the fewest clouds overhead. Scattered clouds are found over Molokai, Lanai and Maui. The Big Island has clouds over the northern half of the island, with just a few clouds over the remainder of the island.