Satellite Interpretation Message
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000
ATHW40 PHFO 300549
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
0530 UTC SAT AUG 30 2014

BASED ON DATA THROUGH 0500 UTC AUGUST 29 2014

THE MOST NOTICEABLE LOW LEVEL WEATHER FEATURE IN THE CENTRAL NORTH
PACIFIC IS A BROAD ANTICYCLONIC CIRCULATION. THIS
CIRCULATION...ACTUALLY A SUBTROPICAL RIDGE...HAS AN AXIS EXTENDING
EAST TO WEST ALONG ABOUT 40N. SOUTH OF THE RIDGE AXIS...SATELLITE
LOOP SHOWS LOW LEVEL FLOW IS GENERALLY FROM EAST NORTHEAST TO WEST
SOUTHWEST...INCLUDING ACROSS LOCAL HAWAIIAN WATERS. LOW LEVEL FLOW
NORTH OF THE RIDGE AXIS IS GENERALLY FROM WEST TO EAST.

A SHARP UPPER TROUGH...WITH AN AXIS EXTENDING THROUGH
34N140W...31N160W AND 29N180W...HAS TRIGGERED ISOLATED CUMULONIMBUS
WEST OF 171W BETWEEN 28N AND 32N AND AN AREA OF BROKEN TO OVERCAST
LAYERED CLOUDS WEST OF 172W BETWEEN 35N AND 38N. THIS UPPER TROUGH
HAS NOT MOVED MUCH OVER THE PAST 24 HOURS.

SATELLITE LOOP SHOWS A PAIR OF LOWS EMBEDDED WITHIN EASTERLY FLOW TO
THE SOUTH OF THE LOW LEVEL RIDGE AXIS. ONE OF THESE...NEAR
31N152W...IS THE REMNANT CIRCULATION OF TROPICAL DEPRESSION LOWELL
AND CONSISTS OF BROKEN STABLE LOW CLOUDS. A SECOND SWIRL OF LOW
CLOUDS IS NOTED NEAR 21N153W...ABOUT 160 MILES NORTHEAST OF THE BIG
ISLAND AND 310 MILES EAST OF OAHU.

CLOUD COVER WHICH FORMED ACROSS THE ISLANDS THIS AFTERNOON HAVE
BEGUN TO SLOUGH OFF ACROSS ADJACENT LEEWARD WATERS THIS EVENING.
OVERCAST LOW CLOUDS ARE NOTED ACROSS LEEWARD WATERS FROM OAHU TO
MAUI...AND ACROSS WATERS SOUTH AND SOUTHWEST OF THE BIG ISLAND.
REMAINING LEEWARD WATERS AND ALL WINDWARD WATERS HAVE SCATTERED LOW
CLOUDS TO CLEAR SKIES. CLOUD COVER HAS BEGUN TO DECREASE ACROSS LAND
AREAS...WITH ONLY PATCHY BROKEN LOW CLOUDS NOTED ACROSS LEEWARD
KAUAI AND THE KOOLAU AND WAIANAE SUMMITS OF OAHU. MOLOKAI APPEARS TO
BE MOSTLY CLEAR...BUT NEARBY LANAI HAS BROKEN TO OVERCAST LOW
CLOUDS. PATCHY BROKEN LOW CLOUDS CLING TO WINDWARD HALEAKALA SLOPES
ON MAUI. OVERCAST LOW CLOUDS PERSIST ACROSS KAU AND KONA SHORES AND
SLOPES ON THE BIG ISLAND...WHILE THE REST OF THE BIG ISLAND SEEMS TO
HAVE SCATTERED LOW CLOUDS TO CLEAR SKIES. SATELLITE LOOP SHOWS LOW
CLOUDS ARE MOVING ACROSS LOCAL WATERS GENERALLY TOWARD THE WEST
SOUTHWEST AT 10 MPH.

$$

POWELL






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