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000
FXUS65 KBOI 200331
AFDBOI

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
931 PM MDT SUN MAY 19 2013

.DISCUSSION...UPPER LEVEL LOW CONTINUES TO PULL AWAY FROM
SOUTHWEST IDAHO. CLOUDINESS CONTINUES TO DISSIPATE OVER THE
TREASURE VALLEY AND CENTRAL OREGON...A TREND THAT WILL CONTINUE
OVERNIGHT. MINOR UPDATE FOR IMPROVING WEATHER. WINDS AROUND 30 MPH
HAVE DROPPED OF TO 10-20 MPH AS OF 9 PM AND WILL DIMINISH
OVERNIGHT AS IN THE FORECAST AND IN LINE WITH WINDS ALOFT.

&&

.AVIATION...VFR. MOSTLY CLEAR. NW SURFACE WINDS AT 10-20 KTS
WITH LOCAL GUSTS TO 25 KTS...DIMINISHING AFTER SUNSET. NORTHERLY
WINDS ALOFT AVERAGING 10 KTS UP THROUGH 10K FEET MSL.

&&

.PREV DISCUSSION...
SHORT TERM...TONIGHT THROUGH TUESDAY...HIGH-AMPLITUDE SHORT WAVE
RIDGE WILL MOVE THROUGH LATE TONIGHT AND TOMORROW...USHERING IN A
COUPLE DAYS OF WARMING. THIS WILL ALSO DECREASE THE CHANCE OF
SHOWERS AND STORMS. IN FACT...AFTER A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE FAR EAST PORTION OF THE CWA THIS EVENING...
THE NEXT CHANCE WILL BE IN THE WEST TUESDAY AFTERNOON AS THE
PREVIOUSLY MENTIONED RIDGE MOVES OFF AND A DEEP STRONG UPPER LOW
MOVES IN FROM THE NW. TEMPS WILL RISE EACH DAY...WITH HIGHS MONDAY
FROM 75 TO 80 AT LOWER ELEVATIONS AND THEN ALL THE WAY UP TO THE
MID 80S IN THE TREASURE VALLEY TUESDAY. EASTERN OREGON WILL BEGIN
TO COOL LATE TUESDAY AS HEIGHTS FALL AND CLOUD COVER INCREASES.
BREEZY CONDITIONS THIS AFTERNOON WILL TAPER OFF THIS EVENING...AND
WINDS TOMORROW AND TUESDAY WILL NOT BE AS STRONG.

LONG TERM...TUESDAY NIGHT THROUGH SUNDAY...A STRONG COLD FRONT WILL
MOVE THROUGH THE AREA LATE TUESDAY NIGHT AND EARLY WEDNESDAY MORNING
AS A DEEP CUT OFF LOW PRESSURE SYSTEM PUSHES INTO THE PACIFIC
NORTHWEST. AFTERNOON TEMPERATURES ON WEDNESDAY WILL BE AROUND 10
DEGREES BELOW NORMAL...AND AROUND 20 DEGREES LOWER THAN TUESDAYS TEMPS.
THE CUT OFF LOW WILL STALL OVER THE PAC NW THROUGH FRIDAY NIGHT...WITH
TEMPS 5-10 DEGREES BELOW NORMAL AND A CHANCE OF SHOWERS EACH DAY...MAINLY
OVER THE HIGHER TERRAIN. BY SATURDAY THE LOW PRESSURE CENTER WILL BEGIN
TO MOVE OFF TO OUR NORTH...THOUGH A LARGE SCALE TROUGH WILL REMAIN OVER
THE WESTERN UNITED STATES. THIS WILL ALLOW TEMPERATURES TO REBOUND TO
NEAR NORMAL VALUES BY SUNDAY.

&&

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

$$

WEATHER.GOV/BOISE

DISCUSSION...VM
AVIATION.....JS
PREV SHORT TERM...SP
PREV LONG TERM....CB/SP