524  
FXHW01 KWNH 250753  
PMDHI  
 
HAWAII EXTENDED FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
353 AM EDT WED JUN 25 2025  
 
VALID 00Z THU 26 JUN 2025 - 00Z THU 03 JUL 2025  
 
ABOVE NORMAL MOISTURE IS IN PLACE ACROSS MUCH OF HAWAII  
WEDNESDAY, WHILE A WEAK UPPER TROUGH ALOFT ALLOWS FOR A RAISED  
INVERSION. THIS WILL EQUATE TO A WET TRADE WIND PATTERN AS  
MODERATE TO BREEZY TRADES ARE IN PLACE. SHOWERS SHOULD BE PASSING  
ACROSS MOST ISLANDS BUT LINGER FOR KAUAI WHERE THE MOISTURE AND  
TROUGHING ARE MAXIMIZED. INTO LATE WEEK, MODERATE TRADES SHOULD  
CONTINUE BUT DRIER CONDITIONS ARE EXPECTED. AN UPPER RIDGE WILL  
DRIFT OVER THE EASTERN ISLANDS AND EVENTUALLY BUILD TO THE WEST BY  
THIS WEEKEND. THUS SHOWERS SHOULD DECREASE BUT A FEW SHOWERS OVER  
WINDWARD AND MAUKA AREAS ARE STILL POSSIBLE. WILL CONTINUE TO  
MONITOR THE PATTERN INTO NEXT WEEK, BUT CURRENTLY IT APPEARS THAT  
EARLY TO MIDWEEK ANOTHER UPPER TROUGH AXIS COULD DEVELOP NORTHWEST  
OF THE ISLANDS, WHILE THE SURFACE PRESSURE GRADIENT COULD WEAKEN  
AND DECREASE TRADES, ESPECIALLY FOR KAUAI/OAHU.  
 
TATE  
 

 
 
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