576
FXHW01 KWNH 120612
PMDHI
HAWAII EXTENDED FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
211 AM EDT THU SEP 12 2024
VALID 00Z FRI SEP 13 2024 - 00Z FRI SEP 20 2024
THE UPPER LOW AND IT ASSOCIATED SURFACE LOW/TROUGH CURRENTLY
SITUATED NORTH OF HAWAII IS FORECAST TO CONTINUE WEAKENING, AND
THEN DRIFT TO THE SOUTHWEST THROUGH THE END OF THE WEEK. THERE IS
GOOD MODEL AGREEMENT THAT THE MAIN SURFACE HIGH NEAR 40 DEGREES
NORTH BUILDS BACK IN BY SUNDAY AND INTO NEXT WEEK, WITH A TIGHTER
PRESSURE GRADIENT OVER THE ISLANDS.
STRONGER LOW LEVEL EAST-NORTHEASTERLY FLOW CAN BE EXPECTED MOST
DAYS COMPARED TO THE PAST COUPLE OF DAYS, WITH THE SURFACE HIGH
REBUILDING NORTH OF THE STATE. THE MAINLY TERRAIN FAVORED SHOWERS
CAN BE EXPECTED MOST DAYS, AND THERE MAY BE SOME RESURGENCE OF
HIGHER PWS AND INCREASED RAINFALL PROSPECTS BY MONDAY WITH AN
INVERTED TROUGH PASSING BY THE STATE.
HAMRICK
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