Weather Service Report


799 
FXUS65 KBOI 300918
AFDBOI

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
318 AM MDT SAT MAY 30 2015

.SHORT TERM...TODAY THROUGH SUNDAY...AN AREA OF LIGHT SHOWERS WAS
MOVING NE THROUGH THE NORTHERN HALF OF THE CWA AS OF 3 AM MDT.
MOST OF THESE SHOWERS ARE REMAINING ALOFT...MEANING THEY ARE
VIRGA...HOWEVER A FEW ARE LIKELY REACHING THE GROUND. THESE ARE
ASSOCIATED WITH A WEAK SHORTWAVE MOVING THROUGH A WEAK RIDGE.
THIS AREA IS FORECAST TO MOVE RAPIDLY NORTHEAST AND LEAVE THE AREA
BY 6 AM MDT. OTHERWISE...HEIGHTS ALOFT WILL CONTINUE TO RISE
THROUGH SUNDAY AS AN UPPER LEVEL LOW PULLS EAST FROM BRITISH
COLUMBIA WHILE ANOTHER LARGER LOW BECOMES ESTABLISHED OFF THE PAC
NW COAST. WE WILL SEE WARMER TEMPS EACH DAY THIS WEEKEND WITH
ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS...MAINLY IN THE
HIGHER ELEVATIONS AND MAINLY IN THE NORTH. TEMPS WILL BE AROUND 15
DEGREES ABOVE NORMAL SUNDAY...WITH UPPER 80S IN THE WESTERN MAGIC
VALLEY AND LOWER 90S IN THE TREASURE VALLEY. WINDS WILL BE LIGHT
APART FROM SHOWERS AND STORMS.

.LONG TERM...SUNDAY NIGHT THROUGH FRIDAY...AN UPPER LEVEL TROUGH 
WILL BEGIN TO SHIFT INLAND ON MONDAY FOR SHOWERS AND THUNDERSTORMS. 
EXPECT SHOWERS EARLY MONDAY MORNING ACROSS MAINLY SOUTHWEST IDAHO 
AHEAD OF A WEAK EMBEDDED SHORTWAVE. THE SHORTWAVE EXITS FOLLOWED BY 
DRY AIR ALOFT. THUNDERSTORMS FAVOR HIGHER TERRAIN AND WILL BE LIMITED 
BY CLOUD COVER AND MARGINAL DYNAMIC SUPPORT. A COLD FRONT PASSAGE 
EARLY MONDAY AFTERNOON...WILL BRING TEMPERATURES AROUND 8 DEGREES 
COOLER THAN SUNDAY. ON TUESDAY...EXPECT TEMPERATURES AROUND 10
DEGREES COOLER THAN MONDAY AS THE UPPER LEVEL TROUGH REMAIN OVER
THE PACIFIC NORTHWEST. THE TROUGH SHIFTS INTO THE INTERMOUNTAIN
REGION BY THURSDAY AND LINGERS OVER THE REGION THROUGH
SATURDAY...WITH TEMPERATURES AVERAGING A FEW DEGREES BELOW
NORMAL...AND A CHANCE OF SHOWERS AND THUNDERSTORMS EACH DAY.

&&

.AVIATION...VFR. ISOLATED SHOWERS THIS MORNING MAINLY NORTH OF BOISE-
BAILEY LINE. SHOWERS SHOULD LIFT OUT BY 12Z. ISOLATED TO SCATTERED 
AFTERNOON AND EVENING THUNDERSTORMS MAINLY OVER THE MOUNTAINS NORTH 
OF A KBNO-KMYL-FAIRFIELD LINE THROUGH THE WEEKEND. OTHERWISE...SKIES 
WILL BE MOSTLY CLEAR. SURFACE WINDS...VARIABLE LESS THAN 10 KTS 
TONIGHT...EAST TO SOUTH 5-15 KTS. WINDS ALOFT...SOUTHWEST 10-15 KTS 
UP THROUGH 10K FT MSL.

&&

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

&&

$$

WEATHER.GOV/BOISE

SHORT TERM...SP
LONG TERM....JS
AVIATION.....JS

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