050
FXUS65 KBOI 222206
AFDBOI
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
306 PM MST WED JAN 22 2020
SHORT TERM...TONIGHT THROUGH SATURDAY
A WEAK WARM FRONT,
ASSOCIATED WITH A SYSTEM OFF THE PACIFIC NORTHWEST COAST, WILL
MOVE THROUGH THE REGION LATE THIS AFTERNOON INTO THE EVENING.
EXPECT SHOWERS TO INCREASE THIS AFTERNOON AS THIS FEATURE MOVES
THROUGH. SNOW LEVELS WILL RISE TO AROUND 6500 FEET ACROSS EASTERN
OR AND SOUTH OF THE SNAKE BASIN IN IDAHO, WITH LOWER SNOW LEVELS
OF 3500-4500 FT ACROSS THE IDAHO MOUNTAINS AND IN BAKER COUNTY OR.
PRECIPITATION WILL TAPER OFF ON THURSDAY MORNING AS A DIRTY RIDGE
BUILDS INTO THE REGION AHEAD OF THE COLD FRONT. EXPECT MILD
TEMPERATURES FOR MOST PLACES ON THURSDAY WITH VALUES REACHING THE
LOW 50S ACROSS SNOW-FREE PORTIONS OF THE SNAKE BASIN. A WEAK COLD
FRONT WILL MOVE THROUGH ON FRIDAY MORNING, WITH A BETTER CHANCE
OF PRECIPITATION ACROSS MUCH OF THE REGION. SNOW LEVELS WILL BE
AROUND 7000 FT ACROSS EASTERN OR AND SOUTH OF THE SNAKE BASIN IN
IDAHO, WITH LOWER SNOW LEVELS OF 4500-5500 FEET ACROSS THE IDAHO
MOUNTAINS AND IN BAKER COUNTY OR, BEFORE THE COLD FRONT LOWERS
SNOW LEVELS TO 4500-5500 FEET ON FRIDAY AFTERNOON. EXPECT A BRIEF
DRY PERIOD ON SATURDAY MORNING BEFORE THE NEXT SYSTEM FOLLOWS ON
SATURDAY AFTERNOON. TEMPERATURES WILL REMAIN AROUND 10 DEGREES
ABOVE NORMAL FOR THIS PERIOD. WINDS ARE NOT SUBSTANTIAL DURING
THIS PERIOD.
LONG TERM...SATURDAY NIGHT THROUGH WEDNESDAY
MODELS ALL AGREE
IN KEEPING THE PROGRESSIVE PATTERN IN PLACE THROUGH THE ENTIRE
EXTENDED PERIOD. A SERIES OF SYSTEMS ARE EXPECTED TO MOVE THROUGH
THE REGION IN A WEST/SOUTHWEST FLOW ALOFT SUNDAY THROUGH TUESDAY.
SNOW LEVELS ARE EXPECTED TO REMAIN FAIRLY HIGH WITH AROUND 5000
FEET ACROSS BAKER COUNTY AND MCCALL AND 5-6000 FEET ACROSS THE
SOUTH. THOSE LEVELS BRIEFLY DROP TO AROUND 3500-4000 FEET MONDAY
MORNING AS THE FLOW SHIFT NW. AN UPPER RIDGE ONCE AGAIN BUILDS
BACK INTO THE REGION WEDNESDAY. DAYTIME HIGHS ARE EXPECTED TO
REMAIN ABOUT 5 TO 10 DEGREES ABOVE NORMAL THROUGH THE PERIOD.
AVIATION
VFR-MVFR CONDITIONS EXPECTED WITH POCKETS OF IFR NEAR
KONO/KBKE TO LINGER THROUGH THE AFTERNOON. CONDITIONS BECOMING
MVFR-IFR THROUGH THE EVENING AND OVERNIGHT IN LOW CLOUDS AND
SHOWERS WITH MTNS OBSCURED. SNOW LEVELS NEAR 4000 FEET ACROSS
KBKE/KMYL AND 5-6000 FEET ACROSS THE SOUTH. SURFACE WIND VARIABLE
AT LESS THAN 10 KTS. WINDS ALOFT NEAR 10KFT WEST TO NORTHWEST 25
TO 40 KTS, DECREASING TO 15 TO 25 KTS AFT 23/15Z.
BOI WATCHES/WARNINGS/ADVISORIES
ID...NONE.
OR...NONE.
WWW.WEATHER.GOV/BOISE
WWW.FACEBOOK.COM/NWSBOISE
WWW.TWITTER.COM/NWSBOISE
SHORT TERM...KA
LONG TERM....CR
AVIATION.....CR
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