657  
NZUS99 KBOI 210312  
TXTSFD  
 
IDAHO STATE FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE BOISE ID  
912 PM MDT WED MAY 20 2026  
 
AN UPPER LEVEL TROUGH OVER THE CONTINENTAL DIVIDE WILL CONTINUE MOVING  
SOUTHEAST OVER THE ROCKIES, KEEPING THE STATE UNDER A DRY AND BREEZY NORTHWEST  
FLOW. A PACIFIC HIGH PRESSURE WILL NUDGE INTO THE INTERIOR WEST FOR THE  
REMAINDER OF THE WEEK, CONTINUING A DRYING AND GRADUAL WARMING TREND  
STATEWIDE. A LOW PRESSURE SYSTEM DIGGING OFF THE COAST OF BRITISH COLUMBIA WILL  
RETURN PRECIPITATION AND THUNDERSTORM CHANCES EARLY NEXT WEEK.  
 
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