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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