Last Updated on Wednesday, 30 July 2014 11:50
Issued: Jul 30, 2014 7:30 PM HST
Latest water vapor imagery shows an upper level trough NW of the main Hawaiian islands with an axis extending from 30°N 144°W to near Kauai. A weak NE to SW oriented upper level ridge is centered near 18°N 137°W.
Around the island chain, broken low clouds can be observed over the windward/ne areas of the Big Island from Hilo to Hawi, while broken to locally overcast low clouds still persist over leeward areas from Waikaloa village to Milolii. Scattered to locally broken low clouds and a few small showers still linger over the SE slopes of Mauna Loa from wood valley to Naalehu. On Maui county, mainly scattered low clouds prevail across the county with lingering broken patches from Kula to Ulupalakua, and around the W Maui mountains. On Oahu and Maui county, scattered low clouds prevail except for some lines of broken low clouds and a few embedded showers covering portions of the Koolau mountains.
Elsewhere, scattered to locally broken stratocumulus and cumulus clouds cover the area from 140°W to 160°W with individual cloud elements moving generally to the W at 15 to 20 mph. A stationary frontal boundary is located near midway/pearl hermes atolls with an associated band of layered clouds covering much of the area N of 26°N from 162°W to 180. Cloud tops in these layered clouds are reaching 44 thousand feet.
Far S of the islands near the intertropical convergence zone, or ITCZ, tropical depression Genevieve keeps generating layered and cumulonimbus clouds across the area between 10°N to 15°N and 149°W to 155°W, with cloud tops ranging from 48 to 52 thousand feet. The Central Pacific Hurricane Center is issuing advisories on tropical depression Genevieve, located about 560 miles SSE of Hilo, and is moving W around 7 mph. This system has winds of 35 mph gusting to 45 mph. For further information about tropical depression Genevieve, please see bulletins under WMO header WTPA32 PHFO or AWIPS header HFOTCPCP2.
Also associated with the ITCZ is a low around 12°N 164°W.OR about 740 miles SW of the Big Island, which is generating layered and tower cumulus clouds from 10°N to 18°N and 160°W to 167°W. Highest cloud tops are reaching are reaching 48 thousand feet.