547  
FXHW01 KWNH 100642  
PMDHI  
 
HAWAII EXTENDED FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
242 AM EDT SUN MAY 10 2026  
 
VALID 00Z MON 11 MAY 2026 - 00Z MON 18 MAY 2026  
 
A PASSING WEAK SURFACE TROUGH WILL ALLOW FOR SOME SHOWERS FOR THE  
WESTERN PART OF THE STATE. THROUGH THE COMING WEEK UPPER LEVEL  
RIDGING WILL BE SETTLING IN OVER THE REGION WHICH WILL FOSTER A  
STRENGTHEN SURFACE HIGH NORTH OF THE ISLANDS AND IN TURN LEAD TO  
AN UPTICK IN TRADE WINDS. BY MIDWEEK, A DEVELOPING UPPER LOW TO  
THE NORTHEAST MAY BRING THE POTENTIAL FOR FRONTAL BOUNDARIES NEAR  
THE NORTHERN ISLANDS AND AN INCREASE IN SHOWER ACTIVITY FOR  
WINDWARD AND MAUKA.  
 
CAMPBELL  
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