529  
FXUS65 KBOI 051014  
AFDBOI  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE BOISE ID  
314 AM MST FRI MAR 5 2021  
   
SHORT TERM...TODAY THROUGH SUNDAY NIGHT
 
THE RECENT WARM SPELL  
WILL REACH ITS APEX TODAY UNDER A DRY AND MILD SOUTHWEST FLOW.  
HIGH TEMPERATURES WILL RUN 3-6 DEGREES WARMER THAN YESTERDAY,  
REACHING 10-15 DEGREES ABOVE NORMAL. WINDY CONDITIONS WILL  
ACCOMPANY THE MILD TEMPERATURES WITH SOUTHERLY FLOW MIXING TO THE  
SURFACE OVER SOUTHEAST OREGON AND HIGHER TERRAIN WHILE EASTERLY  
WINDS CHANNEL THROUGH THE SNAKE PLAIN. GUSTS OF 30 TO 40 MPH ARE  
POSSIBLE ACROSS OPEN/ELEVATED TERRAIN WITH LOCALLY HIGHER GUSTS  
ACROSS HARNEY COUNTY. CLOUDS INCREASE TONIGHT AS A TROUGH  
POSITIONED ALONG THE WEST COAST SHIFTS INLAND. WINDS WILL REMAIN  
GUSTY ACROSS SOUTHWEST IDAHO TONIGHT, FEEDING INTO THE SURFACE LOW  
AS IT ADVANCES THROUGH OREGON. THE TROUGH AND AN ACCOMPANYING  
COLD FRONT CROSS THE REGION ON SATURDAY BRINGING A CHANCE OF  
SHOWERS TO MUCH OF THE REGION. PORTIONS OF S-CENTRAL IDAHO ARE THE  
EXCEPTION, REMAINING DRY THROUGH THIS EVENT AS THE TROUGH TRACKS  
NORTHEASTWARD. SNOW LEVELS WILL DROP TO AROUND 5000 FEET ON  
SATURDAY, THROUGH TEMPERATURES WILL LIMIT ACCUMULATION BELOW 6000  
FEET. THE AREA DRIES OUT SATURDAY NIGHT AS THE LOW LIFTS INTO MT.  
DRY CONDITIONS RETURN SUNDAY AND SUNDAY NIGHT AS ANOTHER LOW  
APPROACHES THE COAST. TEMPERATURES ARE NEAR NORMAL FOR SATURDAY  
AND SUNDAY.  
   
LONG TERM...MONDAY THROUGH FRIDAY
 
MOIST SOUTHWEST FLOW ALOFT ON  
MONDAY WILL SPREAD PRECIPITATION OVER HIGHER TERRAIN AS A LOW  
PRESSURE SYSTEM TRAVELS SOUTH ALONG THE PACIFIC NORTHWEST COAST.  
THIS SYSTEM WILL TRAVEL TOWARDS THE FOUR CORNERS REGION, PULLING A  
MAJORITY OF ATMOSPHERIC MOISTURE SOUTH OF THE NEVADA BORDER.  
HOWEVER, A CHANCE OF SHOWERS OVER THE CENTRAL MOUNTAINS UNDER  
NORTHWEST FLOW ALOFT WILL PERSIST THROUGH THE PERIOD. TEMPERATURES  
WILL HOVER NEAR OR A FEW DEGREES BELOW NORMAL THROUGH THE EXTENDED.  
 

 
   
AVIATION
 
VFR WITH INCREASING HIGH CLOUDS FROM THE SOUTHWEST.  
SURFACE WINDS: GENERALLY EAST TO SOUTHEAST 12 KTS OR LESS,  
INCREASING TO 15-25 KTS THROUGH THE SNAKE RIVER VALLEY THIS  
AFTERNOON. WINDS ALOFT AT 10K FEET MSL: SOUTHWEST 20-30 KTS  
INCREASING TO 30-40 KTS THIS AFTERNOON.  
 
WEEKEND OUTLOOK...A COLD FRONT WILL PASS ACROSS THE REGION  
SATURDAY, GENERATING WIDESPREAD SHOWERS WITH ASSOCIATED PERIODS  
OF MVFR CONDITIONS AND MOUNTAIN OBSCURATION. THE FRONT WILL  
PRODUCE GUSTY WEST TO NORTHWEST WINDS SATURDAY AFTERNOON AND  
EVENING. SNOW LEVELS: 4K-5K FT MSL. SHOWERS WILL TAPER OFF  
SATURDAY NIGHT WITH DRY VFR CONDITIONS ON SUNDAY.  
 

 
   
BOI WATCHES/WARNINGS/ADVISORIES
 
 
ID...NONE.  
OR...NONE.  
 

 
 

 
 
WWW.WEATHER.GOV/BOISE  
WWW.FACEBOOK.COM/NWSBOISE  
WWW.TWITTER.COM/NWSBOISE  
 
SHORT TERM...DG  
LONG TERM....AL  
AVIATION.....AL  
 
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