Area Forecast Discussion
Issued by NWS Boise, ID

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
FXUS65 KBOI 302044
AFDBOI

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
244 PM MDT TUE JUN 30 2015

.SHORT TERM...TONIGHT THROUGH THURSDAY...ZONAL FLOW OVER THE AREA
TONIGHT AS AN AREA OF LOW PRESSURE MOVING EAST ALONG THE CANADIAN
BORDER FLATTENING THE RIDGE CENTERED NEAR THE FOUR CORNERS AREA.
ISOLATED SHOWERS AND THUNDERSTORMS OVER SOUTHWEST IDAHO THROUGH
THIS EVENING...MAINLY SOUTH OF THE SNAKE RIVER VALLEY. WEDNESDAY
THROUGH THURSDAY RIDGE OF HIGH PRESSURE WILL SLOWLY REBUILD OVER
THE INTERMOUNTAIN WEST FOR A RETURN TO DRY CONDITIONS AND
TEMPERATURES 10 TO 15 DEGREES ABOVE NORMAL. MAIN CONCERN FOR
WEDNESDAY AFTERNOON THROUGH THURSDAY WILL BE MONSOON MOISTURE
TRAPPED UNDER THE RIDGE. AT THIS TIME LOOKS LIKE ANY SHOWERS AND
THUNDERSTORMS ASSOCIATED WITH THE MONSOON MOISTURE WILL STAY SOUTH
OF THE FORECAST AREA...BUT IF IT MOVES FURTHER NORTH THAN EXPECTED
WILL NEED TO ADD IN A MENTION OF SHOWERS AND THUNDERSTORMS TO
ZONES ALONG THE NEVADA BORDER.

.LONG TERM...THURSDAY NIGHT THROUGH TUESDAY...AN UPPER LEVEL RIDGE
WILL SLOWLY TRANSITION FROM THE GREAT BASIN /CENTERED OVER NEVADA
AND UTAH/ TOWARDS FOUR CORNERS AREA OF THE DESERT SOUTHWEST. AS THIS
TRANSITION OCCURS SOUTHERLY FLOW WILL DEVELOP ALLOWING MONSOONAL
MOISTURE TO CREEP NORTHWARD BY SATURDAY AFTERNOON. THE MONSOONAL
MOISTURE WILL INCREASE CHANCES FOR AFTERNOON THUNDERSTORMS SATURDAY
THROUGH TUESDAY MAINLY OVER THE HIGHER TERRAIN IN THE SOUTHERN
ZONES. TEMPERATURES EXPECTED TO REMAIN 10-15 DEGREES ABOVE NORMAL
THROUGH THE EXTENDED PERIOD.

&&

.AVIATION...VFR. ISOLATED THUNDERSTORMS SOUTH OF A LINE FROM KREO-
KBOI-KSNT MAINLY OVER THE HIGHER TERRAIN. SURFACE WINDS GENERALLY NW
12KT OR LESS...EXCEPT GUSTY AND ERRATIC WINDS TO 50KT NEAR
THUNDERSTORMS AND ASSOCIATED OUTFLOWS. WINDS ALOFT AT 10K FEET
MSL...WESTERLY 10-20KT.

&&

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

&&

$$

WEATHER.GOV/BOISE

SHORT TERM...JA
LONG TERM....KA/WH
AVIATION.....KA


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.