Area Forecast Discussion
Issued by NWS Boise, ID

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FXUS65 KBOI 302039
AFDBOI

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
239 PM MDT TUE SEP 30 2014

.SHORT TERM...TONIGHT THROUGH THURSDAY...UPPER LEVEL TROUGH AXIS
SWINGS THROUGH OVERNIGHT...BRINGING IN MUCH DRIER AND A LITTLE
COOLER AIR. PRECIP IS ONLY POSSIBLE IN THE FAR NORTH AND
NORTHEAST TONIGHT AND THEN FAR EASTERN EDGE OF THE MTNS TOMORROW
MORNING...TO BE FOLLOWED BY COMPLETELY DRY CONDITIONS LATE WED
THROUGH THU AND BEYOND. WITH LOWERED HEIGHTS AND CONTINUED NW FLOW
ALOFT...TEMPS WILL BE BELOW NORMAL THROUGH THE SHORT TERM. PATCHY
FOG IS FORECAST FOR TOMORROW MORNING IN SHELTERED VALLEYS AND
LOW-LYING SPOTS SEEING THAT WE WILL HAVE LIGHT WINDS AND MOSTLY
CLEAR SKIES. WINDS WILL DIMINISH THIS EVENING AND BE NOTICEABLY
LIGHTER TOMORROW AND THU. AN UPPER LEVEL LOW WILL PASS BY TO OUR
NORTH AND EAST THU...BUT AT THIS TIME IS FORECAST TO BE JUST A
LITTLE TOO FAR AWAY TO IMPACT OUR WEATHER.

.LONG TERM...THURSDAY NIGHT THROUGH TUESDAY...FLAT UPPER LEVEL
RIDGE WILL BE OVER THE FORECAST AREA THROUGH MOST OF THE EXTENDED
PERIOD. THIS WILL BRING SLOWLY WARMING TEMPERATURES AND DRY
CONDITIONS. MODEL SOLUTIONS DIVERGE EARLY NEXT WEEK WITH TIMING
DIFFERENCES ON THE NEXT SYSTEM TO MOVE SOUTH ALONG THE CANADIAN
WEST COAST. EVEN WITH THE TIMING DIFFERENCES SOUTHEAST OREGON AND
SOUTHWEST IDAHO WILL REMAIN DRY THROUGH AT LEAST TUESDAY. MAIN
FORECAST PROBLEM FOR MONDAY AND TUESDAY WILL BE HOW WARM OR COOL
HIGH TEMPERATURES WILL BE. FOR NOW WILL KEEP HIGH TEMPERATURES A
FEW DEGREES ABOVE NORMAL.

&&

.AVIATION...BECOMING MOSTLY CLEAR OVER THE REGION TONIGHT WITH
SCATTERED MID LEVEL CLOUDS THROUGH WEDNESDAY MORNING OVER THE WEST
CENTRAL AND BOISE MOUNTAINS. PATCHY MOUNTAIN VALLEY FOG POSSIBLE
BY WEDNESDAY MORNING...ESPECIALLY IN THE VICINITY OF KMYL. SURFACE
WINDS THIS EVENING WILL BE NORTHWESTERLY 10-20 KNOTS WITH GUSTS OF
25-30 KNOTS...BECOMING 10 KNOTS OR LESS OVER MOST OF THE FORECAST
AREA EXCEPT SOUTHWESTERLY WINDS AROUND 15 KNOTS IN THE MAGIC
VALLEY. WINDS ALOFT WILL BE NORTHWESTERLY AROUND 20 KNOTS UP
THROUGH 10K FEET MSL.

&&

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

&&

$$

WEATHER.GOV/BOISE

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


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