AXUS45 KBOI 210358
MISBOI
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
ISSUED BY WFO POCATELLO/IDAHO FALLS ID
205 PM MST WED NOV 20 2013
.DISCUSSION...EARLY AFTERNOON SATELLITE IMAGERY WAS SHOWING A BROAD 
UPPER TROUGH WORKING EAST THROUGH THE NRN GREAT BASIN/ROCKIES. THE 
ASSOCIATED SURFACE FRONT HAS SHIFTED INTO THE BURLEY AREA AND WILL 
CONTINUE ADVANCING SE INTO NRN UTAH EARLY THIS EVENING. ANTICIPATE 
ONGOING SHOWER ACTIVITY IN THE TWIN FALLS/SRN HIGHLANDS REGION THIS 
EVENING WITH CLEARING FROM WEST TO EAST OVERNIGHT. AMPLE RAINFALL 
TODAY AND CLEARING TONIGHT WILL SET THE STAGE FOR POTENTIAL FOG 
DEVELOP IN THE VALLEY FROM MOUNTAIN HOME WEST-WARD THROUGH THE 
OREGON BORDER REGION OVERNIGHT. TOUGH TO SAY HOW AGGRESSIVE THAT 
WILL GET THURSDAY MORNING SO WILL CARY A MENTION IN THE FORECAST FOR 
NOW AND ALLOW FOLLOWING SHIFTS TO ISSUE ANY NECESSARY HIGHLIGHTS. 
MODELS ARE ALSO SHOWING AN UPPER SNAKE PLAINS CONVERGENCE EVENT 
DEVELOPING NEAR IDAHO FALLS EARLY THIS EVENING AND THEN DRIFTING 
DOWN THE VALLEY INTO THE BURELY-TWIN FALLS-JEROME AREA OVERNIGHT 
POSSIBLY EXTENDING PRECIPITATION COVERAGE IN THAT AREA AFTER 
MIDNIGHT. UPPER RIDGE BEGINS TO BUILD EAST INTO THE COASTAL STATES 
THURSDAY AFTERNOON AND THEN FOLDS OVER INTO IDAHO FRIDAY/SATURDAY 
REMAINING OVER THE REGION THROUGH AT LEAST WEDNESDAY OF NEXT WEEK 
RESULTING IN DRY CONDITIONS AND GRADUALLY WARMER DAYTIME 
TEMPERATURES...WITH NEAR NORMAL CONDITIONS BY EARLY NEXT WEEK. THE 
MODELS ARE CURRENTLY SHOWING A PACIFIC STORM SYSTEM BREAKING INTO 
CALIFORNIA THURSDAY/THANKSGIVING DAY WITH LITTLE IMPACT ANTICIPATED 
FOR TRAVELERS MOVING THROUGH SRN IDAHO. WILL CONTINUE TO WATCH THAT 
SYSTEM FOR POSSIBLE ADJUSTMENTS. 
&&
.AVIATION...A WEAK COLD FRONT HAS MOVED THROUGH MOST OF THE FORECAST 
AREA WITH HIGH PRESSURE RIDGING BUILDING IN FROM THE WEST. EXPECT 
DRIER CONDITIONS AND BREEZY WINDS FOR KBNO...KBKE...KMYL AND KBOI 
THIS AFTERNOON. THE COLD FRONT IS CURRENTLY MOVING THROUGH THE 
EASTERN EDGES OF THE FORECAST AREA BRINGING IFR/LIFR CIGS AND VIS AS 
WELL AS BREEZY TO MODERATE WINDS FOR KJER AND KTWF. EXPECT CIGS TO 
IMPROVE TO VFR FOR KJER AND KTWF BRIEFLY THIS EVENING BEFORE 
DROPPING DOWN IN FOG LATER TONIGHT AS WINDS DROP OFF. KBOI WILL 
LIKELY GO DOWN IN FOG AS WELL BY EARLY MORNING. EXPECT FOG FOR 
KJER...KTWF AND KBOI TO CONTINUE THROUGH MID TO LATE TOMORROW 
MORNING BEFORE CLEARING OUT. WYATT
&&
.BOI WATCHES/WARNINGS/ADVISORIES...
ID...NONE.
OR...NONE.
&&
$$
WEATHER.GOV/BOISE
SHORT TERM...MH
LONG TERM....MH
AVIATION.....TW