Area Forecast Discussion
Issued by NWS Pocatello, ID

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FXUS65 KPIH 290852
AFDPIH

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
252 AM MDT SAT AUG 29 2015

.SHORT TERM...TODAY THROUGH MONDAY.

A STRONG COLD FRONT WILL ARRIVE TODAY AND SLOWLY MOVE THROUGH THE
REGION THIS AFTERNOON. VERY GUSTY WINDS ARE LIKELY THIS AFTERNOON
OVER MUCH OF THE AREA. SOME LOCATIONS WILL SEE GUSTS OF 30 TO 40
MPH. NAM AND GFS INDICATING THAT THUNDERSTORMS WILL DEVELOP THIS
AFTERNOON OVER CASSIA COUNTY AND THEN MOVE EAST NORTHEAST THROUGH
THE SOUTHERN AND INTO THE EASTERN HIGHLANDS TONIGHT. MEANWHILE A
SECONDARY REINFORCING COLD FRONT WILL ARRIVE LATE TONIGHT. THIS WILL
BRING ANOTHER ROUND OF SHOWERS TO THE AREA...MAINLY ACROSS THE
CENTRAL MOUNTAINS. MOST OF THE PRECIPITATION WILL EXIT THE REGION
FOR SUNDAY WITH MUCH COOLER AND DRIER AIR SETTLING IN OVER THE
REGION. SUNDAY LOOKS WINDY AS WELL WITH WIND GUSTS TO 30 MPH ONCE
AGAIN POSSIBLE. THE BASE OF THE UPPER TROUGH IS EXPECTED TO MOVE
THROUGH THE REGION SUNDAY NIGHT. HOWEVER THE AIR OVER MOST OF THE
REGION IS TOO DRY FOR PRECIPITATION. MONDAY LOOKS DRY AND COOL WITH
HIGH PRESSURE SETTLING OVER THE REGION.

VALLE

.LONG TERM...TUESDAY THROUGH SATURDAY.  NEW UPPER LEVEL TROUGH TO
APPROACH FROM THE NORTHWEST PACIFIC THIS FORECAST PERIOD.
CURRENTLY...THIS TROUGH IS EXPECTED TO DEVELOP INTO A LONG WAVE
TROUGH FROM ALBERTA TO CALIFORNIA THURSDAY.  MODELS THEN DEEPEN THE
TROUGH IN THE WESTERN US...BRINGING US THE NEXT DECENT CHANCES FOR
PRECIPITATION BEGINNING THURSDAY.  TEMPERATURES TUESDAY HAVE
INCREASED 2-3 DEGREES AS FORECAST SKIES ARE EXPECTED TO BE LESS
CLOUDY. OTHERWISE...LOW 80S TO UPPER 70S FOR HIGH TEMPERATURES
EXPECTED MID TO LATE WEEK THROUGH THE VALLEY WITH 60S TO 70S
ELSEWHERE. PETERSON

&&

.AVIATION...A STRONG COLD FRONT WILL BRING STRONG GUSTY WINDS AND
A FEW THUNDERSTORMS TO THE AREA TODAY. GUSTY WINDS WILL AFFECT ALL
TAF SITES THIS AFTERNOON. BEST CHANCES FOR THUNDERSTORMS EXISTS
FROM KBYI TO KPIH THIS AFTERNOON AS THE COLD FRONT ARRIVES IN
THESE AREAS.

VALLE

&&

.FIRE WEATHER...A STRONG COLD FRONT WILL ARRIVE TODAY. STRONG
GUSTY WINDS ARE LIKELY ACROSS MUCH OF THE REGION WHICH WILL
COMBINE WITH LOW HUMIDITY TO PRODUCE DANGEROUS FIRE CONDITIONS
ACROSS MANY AREAS. A REINFORCING COLD FRONT WILL ARRIVE FOR SUNDAY
WHICH WILL PRODUCE GUSTY CONDITIONS ACROSS PARTS OF THE REGION.

VALLE

&&

.PIH WATCHES/WARNINGS/ADVISORIES...
RED FLAG WARNING FROM NOON TODAY TO 10 PM MDT THIS EVENING FOR
IDZ410-413-427.

RED FLAG WARNING FROM 6 AM THIS MORNING TO 10 PM MDT THIS
EVENING FOR IDZ422-475-476.

&&

$$



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