Prognostic Meteorological Discussion
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FXHW01 KWNH 211221
PMDHI

HAWAII EXTENDED FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
820 AM EDT TUE MAY 21 2013

VALID 00Z WED MAY 22 2013 - 00Z WED MAY 29 2013

CLOSED LOW IN THE SHORT TERM WILL GRADUALLY LIFT NORTHWARD AND
WEAKEN AS UPPER RIDGING IN THE WESTERN PACIFIC BUILDS EAST TOWARD
HAWAII. THE MODELS/ENSEMBLES ARE IN GOOD SYNOPTIC AGREEMENT
OVERALL THROUGH THE PERIOD. PW VALUES SHOULD LINGER IN THE
1.20-1.50 IN RANGE OVER THE NEXT WEEK /WHICH IS ABOVE NORMAL FOR
MAY/... DESPITE THE RIDGING TO THE NORTH AS THE DRIER AIR IS MUCH
FARTHER EAST. EASTERLY TRADES SHOULD RESUME BY LATE FRIDAY INTO
SATURDAY AS SFC HIGH PRESSURE SINKS SOUTH OF 40N OUT OF THE GULF
OF ALASKA. LOCALLY MODERATE TERRAIN ENHANCED WINDWARD SHOWERS
SHOULD PERSIST THROUGH THE PERIOD WITH SCATTERED LIGHTER SHOWERS
ELSEWHERE.


FRACASSO

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