855
FXHW01 KWNH 210731
PMDHI
HAWAII EXTENDED FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
230 AM EST WED DEC 21 2022
VALID 00Z THU DEC 22 2022 - 00Z THU DEC 29 2022
IMPROVING WEATHER CONDITIONS ARE ON THE HORIZON ACROSS HAWAII IN
THE WAKE OF A STRONG KONA LOW AND COLD FRONT. THE LOW WILL EVOLVE
INTO AN OPEN TROUGH AND LIFT NORTHWARD AND AWAY FROM THE STATE
WITH A BIG RIDGE OVER THE EASTERN PACIFIC BLOCKING IT FROM
TRACKING EAST. GOING INTO THE END OF THE WEEK, THE ENSEMBLE MEANS
ARE INDICATING ANOTHER SURFACE TROUGH AND COLD FRONT APPROACHING
THE NORTHWESTERN ISLANDS, BUT THIS IS NOT EXPECTED TO BE NEARLY AS
STRONG AS THE ONGOING EVENT WITH THE MAIN SURFACE LOW REMAINING
CLOSER TO 40 DEGREES NORTH, AND ANY RAINFALL FROM IT CONFINED TO
THE FAR NORTHWESTERN ISLANDS.
THE PATTERN NORTH OF THE STATE REMAINS ACTIVE GOING INTO THE
WEEKEND WITH A SECOND TROUGH (POTENTIALLY A LITTLE STRONGER)
PASSING BY AS A LOW PRESSURE TRIES TO GET BETTER ORGANIZED NEAR 35
DEGREES NORTH. MEANWHILE, A WEAK SURFACE RIDGE AXIS WILL LIKELY
BE IN PLACE ACROSS THE STATE WITH GENERALLY LIGHT AND VARIABLE
WINDS MOST DAYS, WITH MAINLY A SOUTHEASTERLY COMPONENT TO THE
FLOW. THE TRADES MAY GET A LITTLE STRONGER GOING INTO EARLY NEXT
WEEK.
HAMRICK
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