Area Forecast Discussion
Issued by NWS Boise, ID

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000
FXUS65 KBOI 012150
AFDBOI

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
250 PM MST SUN MAR 1 2015

.SHORT TERM...TONIGHT THROUGH TUESDAY...SHORTWAVE RIDGE IS
TRANSITIONING ACROSS THE AREA FROM THE NORTH AS A STRONG UPPER
LEVEL LOW OFF THE SOUTHERN CA COAST AND A LARGE OMEGA RIDGE
EXTENDING TO ALASKA BRINGS COOL NORTHERLY FLOW. A COLD FRONT
EMBEDDED IN THIS FLOW IS MOVING THROUGH BRITISH COLUMBIA THIS
AFTERNOON AND WILL REACH OUR AREA LATE MONDAY AFTERNOON FROM THE
NORTH. WINDS WILL INCREASE AS THE FRONT MOVES THROUGH THE AREA
LATE MONDAY INTO TUESDAY MORNING AND BE STRONGEST BETWEEN BAKER
CITY AND ONTARIO AND THROUGH THE MAGIC VALLEY...WITH GUSTS UP TO
40MPH. ADVISORY LEVEL SPEEDS ARE NOT EXPECTED AS WINDS ALOFT WILL
NOT BE FULLY REALIZED DUE LACK OF MIXING FROM THE TIME OF DAY.
PRECIPITATION WITH THIS SYSTEM WILL MAINLY BE FOCUSED OVER THE
HIGHER TERRAIN. DRIER AIR WILL MOVE INTO THE REGION BY TUESDAY
AFTERNOON WITH CLEARING SKIES.

.LONG TERM...TUESDAY NIGHT THROUGH SUNDAY...A COOL DRY NORTHERLY
FLOW TUESDAY NIGHT AND WEDNESDAY WILL CONTINUE THE BELOW NORMAL
TEMPERATURES. GUSTY WINDS TUESDAY EVENING WILL DIMINISH BY EARLY
WEDNESDAY. WEDNESDAY WILL BE THE COOLEST DAY OF THE EXTENDED PERIOD
AS HEIGHTS BUILD INTO THE REGION LEADING TO A WARMING TREND AND
ABOVE NORMAL TEMPERATURES BY FRIDAY. THE UPPER RIDGE AXIS IS
EXPECTED TO REMAIN IN THE VICINITY OF THE WEST COAST THROUGH NEXT
WEEKEND. A SHORT WAVE IS PROGGED TO MOVE ALONG THE ROCKIES JUST TO
OUR EAST ON SATURDAY...WITH THE ECMWF DEPICTING THIS FEATURE AS
CLOSER AND A LITTLE BIT STRONGER THAN THE GFS. HOWEVER...MAINTAINED
THE DRY FORECAST.

&&

.AVIATION...VFR. SCATTERED MOUNTAIN CU UNTIL 02Z. LIGHT AND VARIABLE
SURFACE WINDS 10 KNOTS OR LESS. SOUTHWEST WINDS ALOFT TO 15 KNOTS UP
THROUGH 10K FEET MSL.

&&

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

&&

$$

WEATHER.GOV/BOISE

SHORT TERM...KA
LONG TERM....BW/WH
AVIATION.....BW


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