Satellite Interpretation Message
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4
000
ATHW40 PHFO 070537
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
0530 UTC WED DEC 07 2016

BASED ON DATA THROUGH 0500 UTC DECEMBER 07 2016

AT 700 PM HST...WATER VAPOR IMAGERY SHOWED AN AMPLIFIED UPPER
PATTERN ACROSS THE DISCUSSION AREA THAT WAS CHARACTERIZED WITH AN
UPPER TROUGH BETWEEN KAUAI AND THE DATE LINE AND AN UPPER RIDGE AXIS
EXTENDING NORTH-NORTHEAST BETWEEN THE BIG ISLAND AND 140W. A
SHORTWAVE TROUGH EMBEDDED WITHIN THIS UPPER TROUGH COMBINED WITH A
WEAK SURFACE LOW WERE SUPPORTING AN AREA OF BROKEN TO OVERCAST
LAYERED CLOUDS WITH ISOLATED THUNDERSTORMS EAST OF MIDWAY ISLAND
BETWEEN 20N AND 30N FROM 165W TO 173W. MAXIMUM CLOUD TOPS ASSOCIATED
WITH THESE STORMS EXTENDED INTO THE 40 TO 45 THOUSAND FOOT RANGE.
THESE STORMS WERE LOCATED AROUND 300 MILES EAST OF MIDWAY
ISLAND...AS OF THIS DISCUSSION TIME...AND WERE MOVING TOWARD THE
EAST-NORTHEAST AT 15 TO 20 MPH. THE LEADING EDGE OF THIS CLOUD
COVERAGE WAS SEVERAL HUNDRED MILES NORTHWEST OF KAUAI.

MID TO UPPER SOUTHWEST FLOW EAST OF THIS UPPER TROUGH WAS DRAWING A
LARGE PLUME MOISTURE NORTHEASTWARD FROM THE DEEP TROPICS ACROSS MAUI
COUNTY AND THE BIG ISLAND TO 30N 140W. SATELLITE-DERIVED
PRECIPITABLE WATER VALUES REFLECTED THIS PLUME OF MOISTURE WITHIN
THIS AREA AND SHOWED VALUES RANGING FROM 2 TO 2.5 INCHES. THIS DEEP
MOISTURE COMBINED WITH THE UPPER TROUGH AND A WEAK SURFACE TROUGH
CONTINUED TO SUPPORT A LARGE BAND OF BROKEN TO OVERCAST LAYERED
CLOUDS EXTENDING NORTHEAST FROM AROUND 8N 173W TO THE BIG ISLAND TO
30N 140W. THIS BAND WAS WAS ABOUT 500 MILES WIDE IN SOME AREAS. A
FEW THUNDERSTORMS WERE DEVELOPING SEVERAL HUNDRED MILES SOUTHWEST OF
THE STATE BETWEEN 8N AND 15N FROM 165W TO 172W. MAXIMUM CLOUD TOPS
EXTENDED TO AROUND 40 THOUSAND FEET. MOSTLY CLOUDY TO OVERCAST
CONDITIONS PREVAILED OVER MAUI COUNTY AND THE BIG ISLAND. MAXIMUM
TOPS NEAR MAUI EXTENDED TO AROUND 25 THOUSAND FEET. ALTHOUGH DRIER
AIR WAS SHOWN WEST OF MAUI COUNTY AND THIS BAND...MOSTLY CLOUDY
SKIES PREVAILED OVER SOME AREAS OF OAHU AND KAUAI DUE TO LINGERING
CLOUD COVERAGE FROM THE AFTERNOON SEA BREEZE.

A NARROW BAND OF CUMULUS CLOUDS WITH A FEW TOWERING CUMULUS WAS
SHOWN A FEW HUNDRED MILES SOUTH-SOUTHEAST OF THE BIG ISLAND TRACKING
WEST ALONG AND NEAR A WEAK SURFACE TROUGH. MAXIMUM CLOUD TOPS
EXTENDED TO 30 TO 40 THOUSAND FEET.

$$

GIBBS

EFFECTIVE WEDNESDAY...DECEMBER 14 2016...THE NWS WILL DISCONTINUE
THIS PRODUCT. FOR QUESTIONS...PLEASE CONTACT TOM EVANS AT
808-973-5273. THE OFFICIAL CHANGE NOTICE CAN BE FOUND AT...ALL
LOWER CASE...HTTP://WWW.NWS.NOAA.GOV/OM/NOTIF.HTML



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.