507  
FNUS75 KBYZ 161928  
FWSBYZ  
 
SPOT FORECAST FOR 89 KEYSTONE RD...WY NATIONAL GUARD  
NATIONAL WEATHER SERVICE BILLINGS MT  
128 PM MDT MON MAY 16 2022  
 
FORECAST IS BASED ON IGNITION TIME OF 1400 MDT ON MAY 16.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS  
OR CONCERNS WITH THIS FORECAST.  
   
DISCUSSION
 
 
THE SPOT LOCATION WILL RECEIVE SOME LIGHT RAIN OVER THE NEXT  
HOUR, THEN HAVE A GAP IN SHOWERS AND STORMS. BEST CHANCE TO SEE  
STORMS WILL BE BETWEEN 5 AND 7 PM, WITH THE MAIN THREATS BEING  
HALF INCH TO INCH SIZE HAIL, AND A SHORT, SPORADIC WEST TO  
NORTHWEST GUST BETWEEN 40-50 MPH. CONFIDENCE HAS DECREASED FOR  
THUNDERSTORMS TO OCCUR BASED ON RECENT OBSERVATIONS, BUT THEY STILL  
CANNOT BE RULED OUT. THUNDERSTORM POTENTIAL WILL END  
BY 11 PM TONIGHT.  
   
REST OF TODAY
 
 
SKY/WEATHER.........PARTLY SUNNY. SCATTERED SHOWERS AND  
THUNDERSTORMS.  
CWR.................4 PERCENT.  
LAL.................2...1 TO 8 STRIKES/15 MIN/CELL.  
MAX TEMPERATURE.....72-76.  
MIN HUMIDITY........38-42 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......NORTHWEST WINDS 9 TO 10 MPH WITH GUSTS TO  
AROUND 17 MPH. GUSTY AND ERRATIC WINDS EXPECTED  
NEAR THUNDERSTORMS.  
RIDGETOP...........WEST AROUND 15 MPH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. RAIN SHOWERS LIKELY AND CHANCE  
OF THUNDERSTORMS IN THE EVENING, THEN SLIGHT  
CHANCE OF SHOWERS AND THUNDERSTORMS OVERNIGHT.  
CWR.................16 PERCENT.  
LAL.................3...9 TO 15 STRIKES/15 MIN/CELL.  
MIN TEMPERATURE.....46-50.  
MAX HUMIDITY........83-87 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......NORTHWEST WINDS 6 TO 8 MPH. GUSTY AND ERRATIC WINDS  
EXPECTED NEAR THUNDERSTORMS.  
RIDGETOP...........SOUTHWEST AROUND 5 MPH.  
   
TUESDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING MOSTLY SUNNY.  
CHANCE OF RAIN SHOWERS IN THE MORNING. SLIGHT  
CHANCE OF THUNDERSTORMS THROUGH THE DAY. SLIGHT  
CHANCE OF RAIN SHOWERS IN THE AFTERNOON.  
CWR.................24 PERCENT.  
LAL.................2...1 TO 8 STRIKES/15 MIN/CELL.  
MAX TEMPERATURE.....65-69.  
MIN HUMIDITY........46-50 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......NORTHWEST WINDS 5 TO 10 MPH. GUSTY AND ERRATIC  
WINDS EXPECTED NEAR THUNDERSTORMS.  
RIDGETOP...........WEST AROUND 10 MPH.  
 

 
FORECASTER...VERTZ  
REQUESTED BY...ADAM OSWALT  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2212159.0/BYZ  
.DELDT 05/16/22  
.FORMATTERVERSION 2.0.0  
.EMAIL ADAM.S.OSWALT@GMAIL.COM  
 
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