347  
FNUS75 KBOI 231517  
FWSBOI  
 
SPOT FORECAST FOR S-219 TRAINING...USFS  
NATIONAL WEATHER SERVICE BOISE ID  
917 AM MDT WED MAY 23 2018  
 
FORECAST IS BASED ON IGNITION TIME OF 0900 MDT ON MAY 23.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
..SHOWERS AND THUNDERSTORMS POSSIBLE TODAY
 
 
   
DISCUSSION
 
 
AN UPPER LEVEL LOW SITUATED OVER IDAHO WILL SLOWLY MOVE NORTH DURING  
THE DAY. THIS WILL BRING A CHANCE OF SHOWERS AND THUNDERSTORMS TO THE  
BURN AREA, MAINLY DURING THE AFTERNOON. LIGHT WINDS ALOFT AND A MOIST  
ATMOSPHERE WILL RESULT IN SLOW MOVING STORMS WITH POTENTIAL FOR HEAVY  
RAIN. GUSTY AND ERRATIC WINDS WILL BE POSSIBLE NEAR SHOWERS AND  
THUNDERSTORMS.  
   
REST OF TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. ISOLATED SHOWERS IN THE MORNING,  
THEN SCATTERED SHOWERS AND THUNDERSTORMS IN THE  
AFTERNOON. CHANCE OF PRECIPITATION 50 PERCENT.  
MAX TEMPERATURE.....70 TO 75.  
MIN HUMIDITY........46 TO 51 PERCENT.  
CWR /0.10 INCH/.....20 PERCENT.  
LAL.................1 IN THE MORNING, INCREASING TO 4 IN THE  
AFTERNOON.  
WIND - EYE LEVEL....SOUTH 3 TO 7 MPH, THEN WEST 5 TO 9 MPH IN THE  
AFTERNOON. GUSTY AND ERRATIC WINDS POSSIBLE NEAR  
SHOWERS AND THUNDERSTORMS.  
MIXING HEIGHT.......7000 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH.  
HAINES INDEX........3 VERY LOW.  
VENTILATION INDEX...350 FAIR.  
 

 
FORECASTER...LINDQUIST  
REQUESTED BY...L. ROBINSON  
TYPE OF REQUEST...PRESCRIBED  
.TAG 1810550.0/BOI  
 
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