667  
FXUS65 KBYZ 090812  
AFDBYZ  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE BILLINGS MT  
212 AM MDT SUN AUG 9 2020  
   
DISCUSSION
 
 
TODAY THROUGH MONDAY NIGHT...  
 
A COLD FRONT CURRENTLY PASSING OVER SOUTHEASTERN MONTANA IS  
SHIFTING WINDS TO THE NORTHWEST AND BRINGING WITH IT COOLER  
TEMPERATURES, WITH HIGHS IN THE UPPER 70S TO LOW 80S TODAY,  
THAT WILL HELP KEEP HUMIDITIES FROM DROPPING BELOW 20 PERCENT.  
WINDS IN EASTERN MONTANA WILL MIX DOWN AND GUST UP TO 30 MPH  
LATE THIS MORNING THROUGH THE AFTERNOON.  
 
WINDS WILL SHIFT TO THE SOUTHEAST MONDAY MORNING, THOUGH WITH  
LITTLE MOISTURE RETURNS WITH IT. ZONAL FLOW ALOFT WILL DOMINATE  
THE WEATHER PATTERN, BUT A WEAK SHORTWAVE IS POSSIBLE LATE MONDAY THAT  
BRINGS A SMALL CHANCE FOR THUNDERSTORMS TO THE MOUNTAINS.  
TEMPERATURES WILL REBOUND, WITH HIGHS IN THE MID 80S.  
 
VERTZ  
 
TUESDAY THROUGH SATURDAY...  
 
DRY WESTERLY FLOW WILL PERSIST TUESDAY WITH TEMPERATURES BOOSTED  
INTO THE 90S FOR MOST LOCATIONS. THE STORM TRACK ACROSS SOUTHERN  
CANADA WILL BECOME ACTIVE AFTER MIDWEEK, DRAGGING SOME COLD FRONTS  
ACROSS OUR CWA. THIS MEANS A CHANCE OF ISOLATED TO WIDELY  
SCATTERED THUNDERSTORMS TRACKING ACROSS OUR REGION EACH DAY.  
AFTERNOON HIGHS WILL BE A LITTLE COOLER THAN TUESDAYS DUE TO  
CLOUD COVER, WITH READINGS IN THE MID 80S TO LOWER 90S. BT  

 
   
AVIATION
 
 
VFR CONDITIONS WILL PREVAIL TODAY. SURFACE WINDS WILL BE PRIMARILY  
FROM THE NORTH OVER THE LOWER ELEVATIONS. BT  

 
   
PRELIMINARY POINT TEMP/POPS
 
 
TDY MON TUE WED THU FRI SAT  
-------------------------------------------------------  
BIL 080 056/087 058/093 061/091 058/090 057/083 055/084  
0/U 10/U 00/U 11/B 21/B 21/U 21/U  
LVM 083 047/087 050/092 053/089 050/088 049/083 047/085  
0/U 10/U 00/U 13/T 22/T 22/T 22/T  
HDN 080 054/087 056/094 060/093 057/092 057/084 053/085  
0/U 10/U 00/U 01/B 21/U 21/U 21/U  
MLS 079 056/087 058/093 064/094 061/090 060/083 055/083  
0/U 10/U 00/U 11/U 21/U 31/U 21/U  
4BQ 080 056/087 058/092 062/094 060/092 059/084 055/085  
0/U 10/U 11/U 11/U 21/U 21/U 21/U  
BHK 078 051/084 055/091 060/093 057/090 057/083 052/083  
0/N 00/U 01/U 12/T 21/U 32/T 21/U  
SHR 081 051/087 055/092 056/093 056/092 054/084 052/085  
1/U 11/U 21/U 12/T 21/U 21/U 21/U  
 

 
   
BYZ WATCHES/WARNINGS/ADVISORIES
 
 
MT...NONE.  
WY...NONE.  
 

 
 

 
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