Area Forecast Discussion
Issued by NWS Boise, ID

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000
FXUS65 KBOI 301011
AFDBOI

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
311 AM MST FRI JAN 30 2015

.SHORT TERM...TODAY THROUGH SATURDAY...A FEW RADAR ECHOES WERE
NEAR THE ID-NV BORDER THIS MORNING ALONG WITH ABUNDANT MID/HIGH
CLOUDS THROUGH THE SOUTH HALF OF IDAHO. PATCHY LOW STRATUS
CONTINUED PER AIRPORT OBS. A TROUGH ON THE NORTH LOW MOVING
THROUGH THE SOUTHWEST MAY BRING ENOUGH MOISTURE FOR ISOLATED
SHOWERS NEAR THE NV-TWIN FALLS COUNTY LINE AS IT SHIFTS EAST
TODAY. BEHIND THAT LOW HIGH PRESSURE AT THE SURFACE AND ALOFT
WILL STRENGTHEN THE INVERSION ACROSS SE OREGON AND SW IDAHO
SATURDAY. TEMPERATURES WILL BE ABOVE NORMAL...WITH MOUNTAIN HIGHS
WELL ABOVE NORMAL.

.LONG TERM...SATURDAY NIGHT THROUGH FRIDAY...MODERATE PACIFIC RIDGE
WILL MOVE INLAND EARLY SUNDAY BUT WILL BE SHORT-LIVED AS AN UPPER
LEVEL TROUGH MOVES EAST OVER BRITISH COLUMBIA...SUPPRESSING RIDGE
HEIGHTS OVER OREGON/IDAHO. AS A RESULT...MOIST WESTERLY FLOW ALOFT
WILL DOMINATE MONDAY THROUGH WEDNESDAY...WARRANTING A CHANCE OF
PRECIPITATION /VALLEY RAIN AND MOUNTAIN SNOW/ THROUGH MID-WEEK.
HEIGHTS WILL REAMPLIFY LATER IN THE WEEK...IN RESPONSE TO AN UPPER
LOW DEEPENING OVER THE NORTH PACIFIC. MAIN EFFECT LOCALLY WILL BE
WARMER TEMPERATURES AND DRY CONDITIONS SOUTH OF THE SNAKE RIVER
THROUGH EARLY FRIDAY. WET CONDITIONS LOOK TO RETURN BY LATE FRIDAY
AS THE UPPER LEVEL RIDGE SHIFTS INLAND AND SOUTHWESTERLY FLOW
TRANSPORTS PACIFIC MOISTURE INLAND.

&&

.AVIATION...LOCAL IFR CONDITIONS IN VALLEY FOG /INCLUDING KBKE AND
KMYL/ THROUGH 16Z THIS MORNING. THE TREASURE VALLEY OF BOTH OREGON
AND IDAHO WILL SEE CONTINUED VFR STRATUS /CIGS AROUND 4K AGL/ WITH
SOME BREAKS BETWEEN 21Z AND 01Z THIS AFTERNOON. MID AND HIGH LEVEL
CLOUD COVER WILL REMAIN CONFINED TO THE MAGIC VALLEY AND SOUTH TO
THE NEVADA BORDER. LIGHT W/NW SURFACE GENERALLY 10 KTS OR LESS.
NORTHWESTERLY WINDS ALOFT WILL AVERAGE 15 KTS THROUGH 10K FT MSL.

WEEKEND OUTLOOK...VALLEY FOG/STRATUS CONDITIONS TO PERSIST
THROUGH THE UPCOMING WEEKEND...OTHERWISE VFR THROUGH 18Z SUNDAY.

&&

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

&&

$$

WEATHER.GOV/BOISE

SHORT TERM...VM
LONG TERM....MT
AVIATION.....MT



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