891  
FXHW01 KWNH 220738  
PMDHI  
 
HAWAII EXTENDED FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
338 AM EDT THU MAY 22 2025  
 
VALID 00Z FRI 23 MAY 2025 - 00Z FRI 30 MAY 2025  
 
AN UPPER LOW/TROUGH IS FORECAST TO SET UP OVER HAWAII THURSDAY  
AND FRIDAY, ALLOWING FOR SOME INSTABILITY, WHILE NORMAL TO ABOVE  
NORMAL MOISTURE LEVELS ARE IN PLACE. MEANWHILE MODERATE TO BREEZY  
EASTERLY TRADES ARE LIKELY AS MIDLATITUDE SURFACE HIGH PRESSURE  
SYSTEMS TRACK WELL NORTH OF HAWAII. THIS WILL ADD UP TO A WET  
TRADE WIND PATTERN WITH POSSIBLY HEAVY SHOWERS AND A FEW  
THUNDERSTORMS THURSDAY-FRIDAY.  
 
THEN THROUGH THE HOLIDAY WEEKEND, MODERATE TO BREEZY TRADES ARE  
LIKELY TO PERSIST. BUT MODEL GUIDANCE CONTINUES TO SHOW MOISTURE  
LEVELS GRADUALLY DECREASING FOR FEWER SHOWERS WHILE THE TROUGH  
ALOFT PULLS AWAY. TRADE WINDS MAY WEAKEN SLIGHTLY TO MODERATE  
LEVELS BY TUESDAY-THURSDAY AS THE DRIER PATTERN CONTINUES.  
 
TATE  
 
 
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