Area Forecast Discussion
Issued by NWS Boise, ID

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FXUS65 KBOI 032108
AFDBOI

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
308 PM MDT SUN MAY 3 2015

.SHORT TERM...TONIGHT THROUGH TUESDAY...SHOWERS AND THUNDERSTORMS
WILL CONTINUE TO INITIATE NEAR THE NV BORDER AND OVER THE FAR
EASTERN BOISE MTNS THIS AFTERNOON. ACTIVITY IS THERMALLY DRIVEN
SO SHOWERS AND STORMS WILL DISSIPATE THIS EVENING. WESTERLY UPPER
FLOW SHIFTS TO THE SOUTHWEST ON MONDAY INCREASING TEMPERATURES AND
TRANSPORTING MOISTURE FURTHER NORTH. THIS WILL INCREASE THE CHANCE
OF AFTERNOON SHOWERS AND THUNDERSTORMS OVER THE WEST- CENTRAL MTNS
AND HIGHER TERRAIN IN BAKER COUNTY. IN THE ID MTNS FOCUS OF
THUNDERSTORM THREAT LOOKS TO BE EAST OF A YELLOWPINE TO ATLANTA
LINE. MONDAY IS THE WARMEST DAY WITH LOWER VALLEYS GETTING INTO
THE 80S AND MTN VALLEYS INTO THE LOW 70S. SE OREGON ZONES SEE AN
INCREASE IN WINDS MONDAY EVENING IN ADVANCE OF A SHARP UPPER
TROUGH APPROACHING THE PAC NW. THE WIND AND OR LINGERING CLOUDS
WILL KEEP MONDAY NIGHT MILD WITH THE POSSIBLY OF SHOWERS REMAINING
OVER THE EAST-CENTRAL OREGON AND WEST-CENTRAL IDAHO MTNS. ON
TUESDAY DRIER AIR AHEAD OF THE TROUGH WILL LIMIT CONVECTIVE
POTENTIAL TO AREAS ALONG THE ID/NV BORDER AND IN THE CENTRAL IDAHO
MTNS...EAST OF MCCALL AND LOWMAN. TEMPERATURES COOL 8-14 DEGREES
FROM MONDAY TO TUESDAY ON A GUSTY NORTHWEST WIND.

.LONG TERM...TUESDAY NIGHT THROUGH SUNDAY...A DEEP UPPER LEVEL LOW
WILL MOVE INTO THE PACIFIC NORTHWEST. OUR REGION WILL BE UNDER ITS
INFLUENCE THROUGH THE EXTENDED AS IT SPLITS FROM THE MAIN FLOW AND
SLOWLY MAKES ITS WAY EAST AND OUT OF THE REGION ON SUNDAY. THE
REGION WILL HAVE DAILY WIDESPREAD SHOWERS AND ISOLATED THUNDERSTORMS
EACH AFTERNOON AND EVENING DUE TO UPPER LEVEL INSTABILITY...MOISTURE
AVAILABILITY...AND DAYTIME HEATING. CONFIDENCE LEVEL IN TIMING AND
LOCATION OF SHOWERS IS STILL LOW...BUT TRENDS ARE INCREASINGLY
FAVORABLE. TEMPERATURES WILL BE 5-10 DEGREES BELOW NORMAL FOR MOST
OF THE FORECAST PERIOD...COMING WITHIN 5 DEGREES OF NORMAL BY THE
WEEKEND.

&&

.AVIATION...VFR UNDER SCATTERED MID-HIGH CLOUDS. ISOLATED SHOWERS
AND THUNDERSTORMS OVER THE BOISE MTNS AND OVER SOUTHERN SE OREGON
AND SOUTHERN SW IDAHO THIS AFTERNOON...TAPERING OFF BY 4/3Z. SURFACE
WINDS...12 KTS OR LESS WITH SOME GUSTS TO 15 KTS IN THE SNAKE RIVER
VALLEY THIS AFTERNOON. GUSTS POSSIBLE NEAR TODAY/S THUNDERSTORMS AS
WELL. WINDS ALOFT NEAR 10K FT MSL...W 5-15 KTS...BECOMING SW AFTER
4/12Z.

&&

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

&&

$$

WEATHER.GOV/BOISE

SHORT TERM...DG
LONG TERM....AB
AVIATION.....AB


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