Wind Advisory 4, NWS Boise, ID

000 
WWUS75 KBOI 140057
NPWBOI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE BOISE ID
557 PM MST WED FEB 13 2008

IDZ014-016-140200-
/O.EXP.KBOI.WI.Y.0004.000000T0000Z-080214T0100Z/
UPPER TREASURE VALLEY-WESTERN MAGIC VALLEY-
557 PM MST WED FEB 13 2008

...WIND ADVISORY WILL EXPIRE AT 6 PM MST THIS AFTERNOON...

THE WIND ADVISORY WILL EXPIRE AT 6 PM MST THIS AFTERNOON. 

STRONG WEST TO NORTHWEST WINDS OF 30 TO 40 MPH SHOULD RAPIDLY
DIMINISH IN THE NEXT 30 TO 60 MINUTES AND REMAIN BELOW WIND
ADVISORY CRITERIA. HOWEVER...GUSTY CONDITIONS WILL STILL PERSIST 
FOR A FEW MORE HOURS THIS EVENING.

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
1039 AM MST WED FEB 13 2008

.DISCUSSION...WINDS HAVE ALREADY INCREASED TO ADVISORY LEVEL SPEEDS
OF GREATER THAN 30 MPH IN MOUNTAIN HOME AND ARE APPROACHING THOSE
SPEEDS IN JEROME AND TWIN FALLS. WINDS WILL ONLY GET STRONGER THIS
AFTERNOON. THEREFORE...WILL BE ISSUING A WIND ADVISORY UNTIL 6 PM
THIS EVENING FOR ZONES 14 AND 16.

COLD FRONT HAS JUST ABOUT CLEARED THE CWA TO THE SOUTH AND EAST. THE
FRONT WILL BE FOLLOWED BY GUSTY NORTHWEST WINDS... WHICH WILL FAVOR
THE TREASURE AND MAGIC VALLEY BASED ON THE NORTHWEST ORIENTATION.
THE WINDS WILL BE CLOSE TO ADVISORY SPEEDS FROM NEAR MOUNTAIN HOME
TO TWIN FALLS THIS AFTERNOON. INHERITED SPEEDS WHICH WERE A LITTLE
ON THE LIGHT SIDE...SO BUMPED SPEEDS UP ESPECIALLY IN THE TREASURE
VALLEY. THE STRATIFORM SNOW BAND WHICH ACCOMPANIED THE FRONT IS
STILL PRODUCING SOME LIGHT SNOW OR FLURRIES IN THE WESTERN MAGIC
VALLEY AND POINTS SOUTH...WHICH WILL CLEAR THE AREA BY NOON. THE
UPPER TROUGH WHICH FOLLOWS THE FRONT WILL MOVE INTO THE AREA THIS
AFTERNOON...ACCOMPANIED BY INSTABILITY ALOFT RESULTING IN THE THREAT
OF MOUNTAIN SHOWERS IN SOUTHWEST IDAHO.

&&

.AVIATION...VFR CONDITIONS THIS MORNING IN SE OREGON AND WRN IDAHO
WITH MVFR-IFR SNOW SHOWERS IN CNTRL AND ERN IDAHO IN THE VICINITY OF
A COLD FRONT. SHOWERS WILL CLEAR OUT OF THESE AREAS BY THE AFTERNOON
FOR VFR CONDITIONS EVERYWHERE. W-NW SURFACE WINDS WILL CONTINUE TO
INCREASE AND BE GUSTY THROUGHOUT THE DAY...DECREASING OVERNIGHT.
PATCHY FOG IS A POSSIBILITY IN NORTHERN SHELTERED MOUNTAIN VALLEYS
BY EARLY TOMORROW MORNING...INCLUDING AT KBKE AND KMYL.

&&

.PREV DISCUSSION...
SHORT TERM...TODAY THROUGH THURSDAY...CLOUD SHIELD AHEAD OF THE COLD
FRONT EXTENDED SW TO NE AS FAR EAST A MCDERMITT THROUGH BRUNEAU
WHILE THE BACK EDGE HAD MOVED INTO FAR NW BAKER COUNTY AS OF 3 AM.
AS OF 3 AM THE COLD FRONT HAD BROUGHT A HUNDREDTH INCH OF MIXED
PRECIP TO BAKER CITY AND A TRACE OF SNOW TO BURNS. LIGHT SNOW IN
MCCALL HAD A LIQUID EQUIVALENT OF 0.4F SO FAR 750-918Z. LOW QPF
EVENT TODAY WILL BE SHORT LIVED EVEN IN HIGH POPS AREAS OF IDAHO
MOUNTAINS. NARROW BAND OF MOISTURE WILL RAPIDLY SHIFT SOUTHEAST THIS
MORNING WITH DRY COLD AIR ADVECTION AND GUSTY WINDS SPREADING ACROSS
THE REGION THROUGH THE MORNING AND LINGERING THIS AFTERNOON...AND
EVENING OVER S CENTRAL IDAHO. DRY UPPER LEVEL RIDGE WITH LIGHT WINDS
AND SURFACE HIGH PRESSURE WILL BRING A COLD MORNING THURSDAY THEN
WARMING ALOFT WILL BRING A MILDER AFTERNOON THURSDAY...THOUGH N FLOW
ACROSS S CENTRAL IDAHO WILL KEEP THAT AREA BELOW NORMAL AND MOSTLY
BELOW FREEZING. EXPECT MOS MIN AT BNO TO RETURN TO 8-10F TOO WARM
WITH THE THURSDAY AM PATTERN OTHERWISE GUIDANCE LOOKED OK.

LONG TERM...THURSDAY NIGHT THROUGH WEDNESDAY...MODELS REMAIN IN GOOD
AGREEMENT ON WEAK BLOCKING PATTERN THROUGH MONDAY. HIGHLY AMPLIFIED
UPPER RIDGE REMAINS ANCHORED OVER THE WESTERN U.S. AS DEEP LONG-WAVE
TROUGHS REMAIN OVER THE CENTRAL AND EASTERN U.S. AND EASTERN ASIA.
THUS...EXPECT MUCH DRIER AND WARMER CONDITIONS THROUGHOUT THE
INTERMOUNTAIN WEST. A WEAK SHORTWAVE TROUGH WILL WEAKEN THE RIDGE
LATE FRIDAY/EARLY SATURDAY FOR SLIGHTLY COOLER TEMPERATURES AND
SLIGHT CHANCE FOR PRECIPITATION WHICH WILL BE LIMITED TO THE NORTH
OF THE CWA. RIDGE REBUILDS AND STRENGTHENS LATE SATURDAY INTO SUNDAY
FOR CLEARING SKIES AND HIGH TEMPERATURES 5 TO 10 DEGREES ABOVE
NORMAL. THE MORE UNSETTLED PATTERN OF MONDAY INTO TUESDAY IS
EXPECTED TO PERSIST THROUGH MID WEEK. GFS BRINGS A SYSTEM INTO THE W
COAST WED AFTERNOON AND HAS STORM SYSTEMS OVER THE UPPER MISSISSIPPI
VALLEY AND SE CANADA WHILE THE EC HAS A SHORTER WAVE LENGTH BETWEEN
SYSTEMS FROM SE CAN/UPPER MS/ROCKIES AS WELL AS APPROACHING THE W
COAST. BOTH MODELS SUPPORT UNSETTLED PROGRESSIVE PATTERN MONDAY-
WEDNESDAY NEXT WEEK SO HAVE KEPT SOME LOW END POPS FAVORING THE
MOUNTAINS. TEMPERATURES ARE EXPECTED TO BE ON A WARMING TREND TO
ABOVE AVERAGE THIS WEEKEND DUE TO A MILDLY AMPLIFIED 0-5 WAVE RIDGE
FROM 130W/JUST OFFSHORE TODAY PROGRESSING EAST TO 120W/OVER IDAHO
EARLY NEXT WEEK.

&&

.BOI WATCHES/WARNINGS/ADVISORIES...
ID...WIND ADVISORY UNTIL 6 PM THIS AFTERNOON FOR IDZ014-IDZ016.
OR...NONE.
&&

WEATHER.GOV/BOISE

DISCUSSION...BW
PREV SHORT TERM...VM
PREV LONG TERM/AVIATION...JS

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BOISE ID
534 AM MST WED FEB 13 2008

IDZ011>016-028>030-ORZ061>064-141245-
WEST CENTRAL MOUNTAINS-LOWER TREASURE VALLEY ID-BOISE MOUNTAINS-
UPPER TREASURE VALLEY-SOUTHWEST HIGHLANDS-WESTERN MAGIC VALLEY-
CAMAS PRAIRIE-OWYHEE MOUNTAINS-SOUTHERN TWIN FALLS COUNTY-
HARNEY COUNTY-BAKER COUNTY-MALHEUR COUNTY-
LOWER TREASURE VALLEY OR-
534 AM MST WED FEB 13 2008 /434 AM PST WED FEB 13 2008/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL
IDAHO...SOUTHWEST IDAHO...WEST CENTRAL IDAHO...NORTHEAST OREGON
AND SOUTHEAST OREGON.

.DAY ONE...TODAY AND TONIGHT

A RATHER FAST MOVING STORM SYSTEM WILL PUSH ACROSS THE AREA TODAY.
SCATTERED RAIN AND SNOW SHOWERS AND GUSTY WINDS WILL ACCOMPANY THIS
SYSTEM. UP TO AN INCH OF SNOW MAY ACCUMULATE IN THE VALLEYS WITH 1
TO 2 INCHES AND UP TO 4 INCHES OVER THE HIGHER MOUNTAINS.
IMPROVING CONDITIONS ARE EXPECTED BY THIS AFTERNOON AND EVENING.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.