Area Forecast Discussion
Issued by NWS Boise, ID

Current Version | Previous Version | Text Only | Print | Product List | Glossary Off
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 272104
AFDBOI

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
304 PM MDT WED MAY 27 2015

.SHORT TERM...TONIGHT THROUGH FRIDAY...SHOWERS AND STORMS HAVE
FIRED UP AGAIN ACROSS MUCH OF THE CWA...GENERALLY NORTH AND EAST
OF A LINE FROM BURNS TO ROME IN SE OREGON. AS HAS BEEN THE CASE
MUCH OF THE PAST 5 DAYS...OWYHEE COUNTY HAS THE STRONGEST STORMS
AS OF 220 PM MDT. SMALL HAIL AND BRIEF HEAVY RAIN WILL OCCUR WITH
MANY OF THE STORMS. THE STRONGEST ONES MAY PRODUCE HAIL CLOSE TO
ONE INCH IN DIAMETER. OTHERWISE...A CLOSED UPPER LOW WAS CENTERED
OVER NORTH-CENTRAL IDAHO EARLY THIS AFTERNOON...AND A SHORT WAVE
WAS ROTATING AROUND THE SW QUADRANT AND HEADED INTO THE BOISE CWA.
THIS WILL AID CONVECTION WELL INTO THE EVENING HOURS. ALTHOUGH WE
CANNOT TOTALLY RULE OUT OVERNIGHT CONVECTION TONIGHT...WE FEEL THE
CHANCES ARE LOWER THAN LAST NIGHT AND THEREFORE HAVE LEFT MENTION
OF THUNDER OUT AFTER MIDNIGHT. TOMORROW THE UPPER LOW WILL MOVE
AWAY TO THE EAST...AND HEIGHTS WILL RISE. TEMPS WILL WARM
SLIGHTLY...BUT THE MORE SIGNIFICANT WARMUP WILL COME FRIDAY AS A
WEAK RIDGE MOVES THROUGH. WE WILL BE SIGNIFICANTLY DRIER OVER
MOST OF THE AREA BOTH TOMORROW AS THE UPPER LOW MOVES AWAY AND
FRIDAY DUE TO THE ARRIVAL OF THE RIDGE. HOWEVER...THERE WILL BE
SUFFICIENT MOISTURE AND INSTABILITY TO WARRANT A CHANCE OF SHOWERS
AND THUNDERSTORMS IN THE HIGHER TERRAIN...MAINLY IN THE EAST
TOMORROW AND IN THE NORTH FRIDAY. SOUTHEAST WINDS IN THE SNAKE
RIVER PLAIN WILL ALSO AID THE WARMUP FRIDAY.

.LONG TERM...FRIDAY NIGHT THROUGH WEDNESDAY....A LOW AMPLITUDE
UPPER LEVEL RIDGE WILL REMAIN OVER THE REGION THROUGH THE
WEEKEND. RESIDUAL MOISTURE UNDER THE RIDGE WILL BRING A CHANCE OF
SHOWERS AND A SLIGHT CHANCE OF AFTERNOON/EVENING THUNDERSTORMS TO
THE BLUE/WEST CENTRAL/BOISE MOUNTAINS THROUGH SATURDAY...BUT DRY
UP BY SUNDAY MORNING AHEAD OF THE NEXT CLOSED LOW TO MOVE INTO THE
INTERMOUNTAIN WEST. TEMPERATURES WILL BE WARM...10-15 DEGREES
ABOVE NORMAL IN THE SOUTHERLY FLOW. SUNDAY NIGHT INTO MONDAY...THE
CLOSED LOW WILL MOVE INTO THE REGION BRINGING SHOWERS AND SLIGHT
CHANCE THUNDERSTORMS...AS UPPER LEVEL DYNAMICS COULD BE FAVORABLE
FOR OVERNIGHT THUNDERSTORMS AHEAD OF THE LOW. TEMPERATURES WILL
DROP TO PLUS OR MINUS 5 DEGREES OF NORMAL AND STAY THIS WAY
THROUGH THE END OF THE PERIOD. AS THE LOW TRACKS EASTWARD...CHANCE
OF SHOWERS AND AFTERNOON/EVENING THUNDERSTORMS WILL OCCUR DAILY.
THE LOW WILL BEGIN TO LIFT OUT BEGINNING WEDNESDAY EVENING.

&&

.AVIATION...VFR. SHOWERS AND ISOLATED THUNDERSTORMS THIS
AFTERNOON/EVENING...MOSTLY EAST OF CENTRAL HARNEY COUNTY...
DECREASING OVERNIGHT. THUNDERSTORMS MAY PRODUCE GUSTY WINDS IN
EXCESS OF 30 KTS...HEAVY RAIN AND SMALL HAIL. SURFACE WINDS...12
KTS OR LESS. WINDS ALOFT NEAR 10K FT MSL...NW 10-20 KTS...
DECREASING TO 5-10 KTS BY 28/18Z.

&&

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

&&

$$

WEATHER.GOV/BOISE

SHORT TERM...SP
LONG TERM....AB/DD
AVIATION.....AB


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