Prognostic Meteorological Discussion
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000
FXHW01 KWNH 191219
PMDHI

HAWAII EXTENDED FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
819 AM EDT FRI SEP 19 2014

VALID 00Z SAT SEP 20 2014 - 00Z SAT SEP 27 2014

DISTURBANCE TO THE SOUTH OF HAWAI`I WILL SLOWLY PUSH WESTWARD
ALONG 15N THROUGH THE WEEKEND, ALLOWING PW VALUES TO RISE TO NEAR
2 INCHES OVER THE BIG ISLAND BEFORE DROPPING BACK TO ABOUT 1.25
INCHES BY TUESDAY NEXT WEEK. STRONG UPPER RIDGING CURRENTLY JUST
WEST OF THE DATELINE IS FORECAST TO MOVE EASTWARD ALONG 30N AND
CENTER JUST NW OF THE STATE NEXT WEEK. FORECAST 500MB HEIGHT
STANDARDIZED ANOMALIES SHOULD RISE TO NEAR +2.5 WITH THIS CLOSED
HIGH -- SOME MODELS RAISE HEIGHTS TO 6000M. THIS WILL ALLOW SOME
INCREASED MOISTURE TO ADVECT INTO THE REGION FROM THE NORTHEAST
TOWARD THE END OF NEXT WEEK AS ADVERTISED BY A MODEST RISE IN PW
VALUES. WITH THE SFC HIGH FORECAST TO BE NEAR 1028MB, TRADES
SHOULD INCREASE NEXT WEEK WITH MORE SCATTERED SHOWERS ABOUND.


FRACASSO

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