Menu of Text Products for the Hawaiian Islands and the Tropical Pacific/Atlantic Oceans: Select a text product: Hawaiian Islands Synoptic Discussion and Guidance Hawaiian Islands 7-day Zone Forecast Radar Message Special Messages Terminal Aerodome Foreasts (TAFS) Area Forecast for Hawaii and Adjacent Coastal Waters AIRMETs for IFR Conditions, Turbulence, and Icing Hawaiian Islands Satellite Interpetation Message Central/North Pacific Tropical Weather Outlook Oahu Surf Observation and Forecast/Coastal Forecast for Hawaiian Waters Offshore Forecast for Hawaiian Waters North Pacific High Seas Forecast Hawaiian Islands Automated Surface Observation System Hourly Weather Roundup Hawaiian Islands Wind Data Hawaiian Islands Rainfall Summary Daily Hawaii Cooperative Observations East Pacific Tropical Weather Outlook Narrow the Menu List Select Time Limit: 12 hours | 24 hours | 48 hours | 72 hours | No time limit Select Product Type: All | Routine Bulletins/FCSTS | Warnings/Watches/Advisories | HAWN Weather | Tropical | Marine | Aviation | Daily Obs | Special Hawaiian Islands Satellite Interpetation Message 485 ATHW40 PHFO 200530 SIMHI HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI 0530 UTC THU JUN 20 2013 BASED ON DATA THROUGH 0500 UTC JUNE 20 2013 WATER VAPOR IMAGERY...SHOWING FEATURES ABOVE ABOUT 24000 FEET...SHOWS AN UPPER TROUGH ORIENTED NORTHEAST TO SOUTHWEST JUST WEST OF THE MAIN HAWAIIAN ISLANDS. WITH AN AXIS EXTENDING ROUGHLY THROUGH 30N150W AND 20N165W...THIS FEATURE HAS MOVED VERY LITTLE OVER THE PAST 24 HOURS. A RAGGED 300 TO 400 MILE WIDE BAND OF BROKEN HIGH CLOUDS EAST OF A LINE FROM 30N146W TO 20N151W TO 13N164W MARKS THE EASTERN FLANK OF THIS UPPER TROUGH. AT LOW LEVELS...A BROAD ANTICYCLONIC CIRCULATION DOMINATES FLOW SOUTH OF 35N ACROSS THE PACIFIC FROM THE MAINLAND TO THE DATELINE. CENTERED NEAR 32N140W...THIS CIRCULATION...ACTUALLY A SUBTROPICAL HIGH...HAS AN ASSOCIATED RIDGE EXTENDING WEST FROM THE CENTER THROUGH 30N170W AND 30N180W. LOW LEVEL FLOW IS GENERALLY FROM EAST TO WEST TO THE SOUTH OF THE RIDGE AXIS...INCLUDING ACROSS THE MAIN HAWAIIAN ISLANDS AND LOCAL WATERS. TRADE WIND CONVERGENCE ALONG THE SOUTHERN FRINGE OF THE ANTICYCLONIC CIRCULATION CONTINUES TO PRODUCE BROKEN TO OVERCAST LAYERED CLOUDS WITH ISOLATED TO SCATTERED CUMULONIMBUS...CB...FROM 05N TO 11N BETWEEN 145W AND 160W. SCATTERED TO NUMEROUS CB ARE NOTED WEST OF 168W BETWEEN 04N AND 09N. LOW CLOUD COVER ACROSS THE MAIN HAWAIIAN ISLANDS FOLLOWS A TRADE WIND PATTERN...WITH COVERAGE FAVORING WINDWARD AND MAUKA AREAS. BROKEN LOW CLOUDS COVER MAUKA SECTIONS OF KAUAI...ALTHOUGH THIS COVERAGE IS DECREASING RAPIDLY. PATCHY BROKEN LOW CLOUDS COVER THE KOOLAU SUMMITS ON OAHU AND THE EASTERN THIRD OF MOLOKAI. BROKEN TO OVERCAST LOW CLOUDS COVER WINDWARD HALEAKALA SLOPES ON MAUI AS WELL AS WINDWARD SLOPES OF THE WEST MAUI MOUNTAINS. PATCHY BROKEN LOW CLOUDS COVER WINDWARD BIG ISLAND SLOPES...WHILE DAYTIME HEATING AND RETURN FLOW HAVE SPAWNED THE USUAL OVERCAST LOW CLOUD COVERAGE ACROSS KAU SLOPES AND KONA SLOPES SOUTH OF KAILUA-KONA. A FIELD OF BROKEN LOW CLOUDS IS APPROACHING THE BIG ISLAND FROM THE EAST...BUT OTHERWISE LOCAL WATERS HAVE GENERALLY SCATTERED LOW CLOUDS. SATELLITE LOOP SHOWS LOW CLOUDS ARE MOVING ACROSS LOCAL WATERS TOWARD THE WEST AT 15 TO 20 MPH. $$ POWELL Bulletins, Forecasts and Observations are courtesy of Honolulu National Weather Service Forecast Office This page is maintained voluntarily by the MKWC and the UHMET faculty, staff, and students. It was last modified on: Tue, Sep 21 2010 - 2314 UTC Send comments to: Ryan Lyman