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000
FXUS65 KBOI 220929
AFDBOI

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
325 AM MDT WED MAY 22 2013

.SHORT TERM...TODAY THROUGH THURSDAY...UPPER LOW CENTERED JUST TO
OUR WEST WILL SPIN OVER THE SAME GENERAL AREA /WASHINGTON AND
OREGON/ FOR THE NEXT COUPLE DAYS. PRECIP HAS BEEN MEAGER THUS FAR
OVERNIGHT WITH ONE AREA OF VALLEY RAIN/MTN SNOW SITUATED OVER
EASTERN BAKER COUNTY. THIS AREA OF PRECIP HAS BEEN SLOWLY SHIFTING
EAST AND WILL REACH THE WEST CENTRAL MTNS LATER THIS MORNING. SNOW
LEVELS ARE AROUND 5000 FEET SO A RAIN/SNOW MIX IS POSSIBLE IN MCCALL
WITH UP TO AN INCH OF SNOW EXPECTED IN THE WEST CENTRAL MTNS ABOVE
5000 FEET THIS MORNING. OTHERWISE...SCATTERED SHOWERS WILL BE
CONFINED TO LOCATIONS NEAR THE LOW CENTER...WHICH INCLUDES PORTIONS
OF SE OREGON AND THE WEST CENTRAL MTNS...THROUGH THIS AFTERNOON.
UPPER LOW WILL SEND A LITTLE MORE MOISTURE INTO THE AREA ON THURSDAY
FOR A SLIGHT CHANCE OF AFTERNOON SHOWERS AND THUNDERSTORMS IN SE
OREGON AND THE HIGHER TERRAIN OF SW IDAHO. WILL MAINTAIN A DRY
FORECAST FOR THE TREASURE VALLEY AND WESTERN MAGIC VALLEY THROUGH
THURSDAY. TEMPERATURES WILL BE COOL TODAY...WITH HIGHS MAINLY IN THE
50S. OVERNIGHT LOWS WILL BE IN THE 30S IN THE TREASURE VALLEY AND
WESTERN MAGIC VALLEY WITH PATCHY FROST POSSIBLE AS WINDS DIMINISH
TOWARD MORNING. GUSTY NORTHWEST WINDS WILL CONTINUE IN SOME AREAS
TODAY BUT WILL BE LIGHTER ON THURSDAY AS THE SURFACE PRESSURE
GRADIENT WEAKENS.

.LONG TERM...THURSDAY NIGHT THROUGH WEDNESDAY...CLOSED UPPER LEVEL
LOW WILL REMAIN IN POSITION OVER THE PACIFIC NORTHWEST THROUGH THE
UPCOMING WEEKEND. IN THIS PATTERN...SEVERAL EMBEDDED SHORT WAVES
WILL MOVE NORTHEAST ACROSS SE OREGON/SW IDAHO FOR PERIODS OF SHOWERS
AND THUNDERSTORMS THROUGH SUNDAY. UPPER LOW WILL MOVE NORTHEAST LATE
SUNDAY...ALLOWING AN OPEN PACIFIC TROUGH TO MOVE INLAND OVER THE
INTERMOUNTAIN REGION. DESPITE PATTERN CHANGE...SENSIBLE WEATHER WILL
REMAIN RELATIVELY SIMILAR WITH COOL TEMPERATURES AND PERIODS OF
PRECIPITATION. THIS SYSTEM WILL EXIT TO THE EAST ON TUESDAY. ON ITS
HEELS WILL BE A POTENT COLD FRONT THAT WILL MOVE INTO THE AREA
TUESDAY NIGHT - USHERING IN A MUCH WETTER SYSTEM FOR WEDNESDAY.

&&

.AVIATION...SCATTERED MVFR-IFR RAIN AND SNOW SHOWERS ACROSS NORTHERN
TERRAIN THROUGH 00Z. SNOW LEVELS WILL CONTINUE THIS MORNING...BUT
WILL ROUGHLY RANGE FROM 3500 FT TO 5500 FT MSL. -SN POSSIBLE AT BOTH
KBKE AND KMYL. LIGHT TO MODERATE W/NW SFC WINDS WITH GUSTS TO 25 KTS
BEFORE 18Z...THEN GUSTS TO 30 KTS /MAINLY E OF KMUO/ THIS AFTERNOON.
WESTERLY WINDS ALOFT WILL AVERAGE 20 KTS AT 10K FT MSL.

&&

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

$$

WEATHER.GOV/BOISE

SHORT TERM...BW
LONG TERM....MT
AVIATION.....MT