214
FXHW01 KWNH 120741
PMDHI
HAWAII EXTENDED FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
341 AM EDT SAT APR 12 2025
VALID 00Z SUN 13 APR 2025 - 00Z SUN 20 APR 2025
SURFACE HIGH PRESSURE NORTH OF HAWAII WILL PROMOTE BREEZY
EASTERLY TRADES THAT SHOULD CONTINUE THROUGH THE WEEKEND AND INTO
EARLY NEXT WEEK. PERIODS OF TRANSIENT ABOVE NORMAL MOISTURE LEVELS
WILL KEEP THIS A SHOWERY PATTERN ESPECIALLY SATURDAY, WITH THE
SHOWERS FAVORING WINDWARD AND MAUKA AREAS.
HIGH PRESSURE IS FORECAST TO WEAKEN AND PULL AWAY TUESDAY AND
BEYOND, WEAKENING THE TRADES AT LEAST SOMEWHAT. MEANWHILE A TROUGH
ALOFT WILL APPROACH, PUSHING A SURFACE COLD FRONT THAT STALLS
WEST OF THE STATE FOR THE LATTER HALF OF NEXT WEEK. THERE IS SOME
UNCERTAINTY IN HOW MUCH THE WINDS COULD VEER (AND WEAKEN) IN
RESPONSE TO THE FRONT. BUT THERE IS AN INCREASING MODEL SIGNAL FOR
THE FRONT TO DRAW MOISTURE NORTHWARD ATOP THE ISLANDS AND
INCREASE SHOWER COVERAGE. GIVEN THE TROUGH ALOFT, THERE COULD BE
SOME HEAVY DOWNPOURS, SO CONTINUE TO MONITOR THE FORECAST.
TATE
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