Satellite Interpretation Message
Issued by NWS

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000
ATHW40 PHFO 190531
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
0530 UTC SAT APR 19 2014

BASED ON DATA THROUGH 0500 UTC APRIL 19 2014

WATER VAPOR IMAGERY SHOWS AN UPPER LEVEL LOW CENTERED AT 16N166W
MOVING TO THE WEST VERY SLOWLY. INFRARED SATELLITE SHOWS AN
OVERCAST MIX OF LAYERED AND CIRRUS CLOUDS ALONG THE EASTERN FLANK OF
THE LOW. SOUTHERLY WINDS IN THIS AREAS ARE DRAWING MOISTURE NORTH
FROM THE NEAR-EQUATORIAL TRADE WIND CONVERGENCE ZONES /NETWCZ/. THE
CLOUD AREA COVERS FROM 10N TO THE MAIN HAWAIIAN ISLANDS...GENERALLY
BOUNDED EAST TO WEST BY 153W AND 164W.

STREAKS OF BROKEN CIRRUS WERE ALSO NOTED FAR NORTHWEST OF THE
STATE WITHIN AN AREA BOUNDED BETWEEN 30N153W TO 21N168W TO 23N173W
TO 30N164W. THESE HIGH CLOUDS ARE TRAVELING EAST AT 25 MPH.

TRADE WINDS ARE MOVING BROKEN STRATOCUMULUS CLOUDS TO THE WEST AT 25
MPH. THESE CLOUDS ARE BOUNDED BETWEEN 10N AND 26N...AND ARE BUSHING
OVER AND TO THE SOUTH OF THE MAIN HAWAIIAN ISLANDS. RADAR INDICATES
THESE CLOUDS ARE PRODUCING SCATTERED SHOWERS OVER WINDWARD AND MAUKA
AREAS OF THE ISLANDS...WITH OCCASIONAL PASSING SHOWERS ONTO LEEWARD
SIDES OF THE SMALLER ISLANDS. THE STRATOCUMULUS CLOUD AREA SHRINKS
TO A 175 MILE WIDE BAND WHICH GOES FROM THE MAIN HAWAIIAN ISLANDS TO
17N180E.

WHILE MUCH OF THE MAIN HAWAIIAN ISLAND CHAIN IS OBSCURED BY THE
HIGHER CLOUDS...LAST VISIBLE IMAGES SHOW BROKEN TO OVERCAST CLOUDS
OVER THE WINDWARD AND MAUKA AREAS...WITH SCATTERED TO FEW LOW CLOUDS
ACROSS THE LEEWARD SIDES OF THE ISLANDS.

THE NETWCZ IS CHARACTERIZED BY A BAND OF SCATTERED THUNDERSTORMS
ALONG AN AXIS FROM 02N141W TO 08N163W TO 04N180E. THE NETWCZ IS
AROUND 400 TO 600 MILES WIDE. HIGHEST CLOUD TOPS IN THIS AREA ARE UP
TO 46 KFT IN HEIGHT.

$$

FOSTER




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