Satellite Interpretation Message
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000
ATHW40 PHFO 291245
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
1230 UTC FRI AUG 29 2014

BASED ON DATA THROUGH 1200 UTC AUGUST 29 2014

THE MOST NOTICEABLE LOW LEVEL WEATHER FEATURE IN THE CENTRAL NORTH
PACIFIC REMAINS 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
36N140W...30N160W AND 27N180W...HAS TRIGGERED ISOLATED CUMULONIMBUS
WEST OF 168W BETWEEN 28N AND 32N AND PATCHES OF BROKEN LAYERED
CLOUDS WEST OF 172W BETWEEN 32N 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
31N148W...IS THE REMNANT CIRCULATION OF TROPICAL DEPRESSION LOWELL
AND CONSISTS OF BROKEN STABLE LOW CLOUDS. A SECOND SWIRL OF LOW
CLOUDS IS NOTED NEAR 22N152W.

CLOUD COVER ACROSS WATERS ADJACENT TO THE MAIN HAWAIIAN ISLANDS EAST
OF OAHU HAS INCREASED SINCE LAST EVENING...WITH BROKEN TO OVERCAST
LOW CLOUDS NOTED ACROSS LEEWARD WATERS FROM MOLOKAI TO SOUTH OF THE
BIG ISLAND. WINDWARD WATERS WEST OF MOLOKAI HAVE BROKEN LOW CLOUDS.
SCATTERED LOW CLOUDS TO CLEAR SKIES ARE NOTED OVER LOCAL WATERS
FARTHER TO THE WEST. IN CONTRAST...LAND AREAS ARE CLEARER THAN THEY
WERE LAST EVENING...ESPECIALLY ACROSS THE SMALLER ISLANDS. SCATTERED
LOW CLOUDS TO CLEAR SKIES ARE NOTED OVER LAND FROM KAUAI THROUGH
MAUI. OVERCAST LOW CLOUDS CONTINUE TO AFFECT KONA AND KAU SHORES AND
SLOPES OF THE BIG ISLAND...WHILE WINDWARD AREAS OF THE BIG ISLAND
APPEAR TO HAVE SCATTERED LOW CLOUDS TO CLEAR SKIES. SATELLITE LOOP
SHOWS LOW CLOUDS ARE MOVING ACROSS LOCAL WATERS TOWARD THE WEST
SOUTHWEST AT 10 TO 15 MPH.

$$

POWELL







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