Area Forecast Discussion
Issued by NWS Boise, ID

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000
FXUS65 KBOI 231703
AFDBOI

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
1003 AM MST SUN NOV 23 2014

.DISCUSSION...MOSTLY SUNNY TODAY WITH NEAR-NORMAL TEMPERATURES.
SHORT WAVE TROUGH MOVING INTO WASHINGTON WILL PASS ACROSS MAINLY
THE NRN PORTION OF OUR AREA THIS AFTERNOON AND EVENING...BRINGING
AN INCREASE IN SNOW SHOWERS TO BAKER COUNTY AND THE MTNS OF SW
IDAHO. ALL THIS IS HANDLED WELL BY THE CURRENT FORECAST AND NO
UPDATE IT PLANNED THIS MORNING.

&&

.AVIATION...VFR TODAY...EXCEPT FOR MVFR-IFR SNOW SHOWERS
NORTHEAST OF A LINE FROM KBKE-KBOI-KSUN THROUGH EARLY MONDAY
MORNING. BEST CHANCE FOR SNOW AT KMYL WILL THIS EVENING THROUGH
EARLY MONDAY MORNING. PATCHY FOG LIKELY IN SHELTERED VALLEYS
MONDAY MORNING. SURFACE WINDS WESTERLY TO NORTHWESTERLY 5-15KT.
WINDS ALOFT AT 10K FEET MSL...NW 25-35KT.

&&

.PREV DISCUSSION...
SHORT TERM...TODAY THROUGH MONDAY...NORTHWEST FLOW WITH SOME
MOISTURE AND UPSLOPE FORCING WILL INDUCE MORE SNOW SHOWERS AND
ADDITIONAL LIGHT SNOW ACCUMULATIONS ACROSS THE NORTHERN HIGH
TERRAIN THROUGH TONIGHT. THE BEST OPPORTUNITY FOR SNOW
ACCUMULATIONS WILL BE WHEN A SHORT WAVE TROUGH NEAR THE BRITISH
COLUMBIA COAST MOVES ACROSS THE NORTH LATE THIS AFTERNOON AND
EVENING. ON MONDAY...UPPER LEVEL RIDGING WILL BUILD IN FROM THE
WEST RESULTING IN DRY WEATHER BY THE AFTERNOON. FOR THE REMAINDER
OF SW IDAHO AND SE OREGON...INCLUDING THE TREASURE VALLEY AND
WESTERN MAGIC VALLEY...EXPECT DRY WEATHER WITH PARTLY TO MOSTLY
CLOUDY SKIES. PATCHY FOG IS POSSIBLE IN THE LOWER TREASURE
VALLEY...BAKER VALLEY...AND LONG VALLEY THIS MORNING. TEMPERATURES
WILL BE SEASONABLY COOL WITH HIGHS CLOSE TO NORMAL. WINDS WILL
REMAIN GUSTY IN THE WESTERN MAGIC VALLEY AND ON RIDGETOPS...
OTHERWISE WINDS WILL BE LESS THAN 10 MPH THROUGH MONDAY FOR MOST
AREAS.

LONG TERM...MONDAY NIGHT THROUGH SUNDAY...UPPER LEVEL RIDGE WILL
BUILD ACROSS THE REGION SHIFTING THE MOIST NORTHWEST FLOW NORTH
AND EAST OF THE AREA TROUGH THURSDAY. CONFIDENCE REMAINS LOW ON
THE STRENGTH OF A INVERSION IN THE TREASURE VALLEY WITH THIS RIDGE
IN PLACE AND WILL BE HIGHLY DEPENDENT ON THE REMAINING SNOW
COVER. NEVERTHELESS...TEMPERATURES WILL BE WELL ABOVE NORMAL IN
AREAS WHICH LACK SNOW COVER WITH THIS RIDGE. AFTER THURSDAY THE
RIDGE DAMPENS ALLOWING A ARCTIC FRONT TO SLOWLY APPROACH THE AREA
FROM THE NORTH WITH INCREASING CHANCES OF PRECIPITATION AS THE
MOIST FLOW RETURNS TO THE AREA.

&&

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

&&

$$

WEATHER.GOV/BOISE

DISCUSSION...SP
AVIATION.....JS
PREV SHORT TERM...BW
PREV LONG TERM....KA


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