Area Forecast Discussion
Issued by NWS Boise, ID

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000
FXUS65 KBOI 241507
AFDBOI

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
907 AM MDT THU JUL 24 2014

.DISCUSSION...UNUSUALLY STRONG UPPER LOW WILL MOVE EAST ALONG 50N IN
SWRN CANADA TODAY AND BRING OUR CWA ITS COOLEST JULY DAY SINCE 2010.
AFTER THAT THE MAIN UPPER RIDGE OVER THE SRN ROCKIES WILL EXPAND
OVER ALL THE WRN U.S. RETURNING HOT WX TO OUR AREA. EVEN WITH THE
UPPER LOW NEARBY TODAY THE AIR MASS IS DRY AND NO THUNDERSTORMS OR
PCPN ARE EXPECTED.  WINDS TODAY WILL BE 15-25 MPH FROM THE WEST
ACROSS THE SNAKE BASIN...5 TO 15 MPH ELSEWHERE.  TONIGHT WILL BE
QUITE COOL UNDER CLEAR SKIES AND LIGHT WINDS.  CURRENT FORECAST
LOOKS GOOD...NO UPDATES.

&&

.AVIATION...VFR. MOSTLY CLEAR. SURFACE WINDS NORTHWEST 10 TO 15
KTS...WITH GUSTS TO 25 KTS...MAINLY EAST OF KBOI. WINDS ALOFT WEST
20 TO 30 KTS AT 10K FT MSL...DECREASING TO 10-15 KTS AFT 00Z.

&&

.PREV DISCUSSION...
SHORT TERM...TODAY THROUGH FRIDAY...A STRONG UPPER LOW WILL LIFT NE
FROM WASHINGTON INTO CENTRAL CANADA THROUGH FRIDAY. THIS WILL LEAVE
OUR AREA IN DRY WSW FLOW. AFTER YDAY/S COLD FRONT...TEMPS WILL BE
MUCH COOLER TODAY...WITH HIGHS AROUND 15 DEGREES BELOW NORMAL FOR
MOST FOLKS. THE WARM-UP WILL BEGIN FRIDAY...WITH VALLEY TEMPS BACK
INTO THE MID 80S. WINDS TODAY IN THE WESTERN MAGIC VALLEY WILL BE
MODERATE OUT OF THE SW...AT 10-20 MPH WITH GUSTS TO 25 MPH. THESE
WILL SUBSIDE QUICKLY TOWARD SUNSET AND WINDS FRIDAY WILL BE ABOUT 5
MPH WEAKER. ELSEWHERE WINDS WILL BE RELATIVELY LIGHT BOTH DAYS.
SKIES WILL BE MOSTLY CLEAR TO CLEAR THROUGHOUT THE SHORT TERM AS DRY
AIR AT MID LEVELS WORKS ITS WAY INTO THE REGION. IT WILL BE SEVERAL
DAYS BEFORE MONSOON MOISTURE RETURNS.

.LONG TERM...FRIDAY NIGHT THROUGH WEDNESDAY...DRY WESTERLY FLOW
ACROSS THE AREA THROUGH SATURDAY. THEN RIDGE WILL BUILD IN FROM THE
SOUTHWEST AND REMAIN FOR THE REST OF THE PERIOD. NEAR NORMAL
TEMPERATURES ON SATURDAY WILL RETURN TO 5-10 DEGREES ABOVE NORMAL BY
SUNDAY...AND THEN STAY RELATIVELY CONSTANT THROUGH THE REST OF THE
WEEK. AS THE RIDGE REBUILDS...MONSOON MOISTURE WILL AGAIN BE DRAWN
UP OVER THE AREA...WHICH SUPPORTS A MENTION OF SHOWERS AND
THUNDERSTORMS MAINLY DURING THE AFTERNOON AND EVENING HOURS MONDAY
AND BEYOND.

&&

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

&&

$$

WEATHER.GOV/BOISE

DISCUSSION...LC
AVIATION.....JDS
PREV SHORT TERM...SP
PREV LONG TERM....TB



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