Area Forecast Discussion
Issued by NWS Pocatello, ID

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000
FXUS65 KPIH 230934
AFDPIH

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
334 AM MDT MON MAR 23 2015

.SHORT TERM...TODAY THROUGH WEDNESDAY NIGHT.
COLD FRONT MOVES THROUGH IDAHO THIS MORNING AND EXPECT RAIN AND
SNOW TO OVERSPREAD THE REGION WITH STRONG WINDS EXPECTED IN THE
SNAKE RIVER PLAIN. SNOW LEVELS WILL START OUT HIGH IN THE 6 TO 7
THOUSAND FOOT RANGE DROPPING TO AROUND 5 THOUSAND FEET BY LATE
AFTERNOON. EXPECT GENERAL AMOUNTS OF 1 TO 4 INCHES ABOVE 6
THOUSAND FEET WITH LESS BELOW THAT. EXPECT HIGHEST AMOUNTS IN
SOUTHEAST CORNER IN IDAHO WASATCH.  SUSTAINED WINDS OF 25 TO 35
MPH ARE POSSIBLE IN THE SNAKE RIVER PLAIN AND A WIND ADVISORY IS
IN EFFECT FROM NOON TO 9 PM. IT SHOULD QUIET DOWN OVERNIGHT WITH
PRECIPITATION ENDING WEST TO EAST. EXPECT A NEAR IDENTICAL SYSTEM
TO MOVE THROUGH THE REGION TUESDAY WITH SIMILAR RESULTS EXPECTED
WITH STRONG WINDS ONCE AGAIN IN THE SNAKE PLAIN IN THE RANGE OF 25
TO 35 MPH AND ANOTHER ADVISORY MAY BE NEEDED WITH MORE SNOW MAINLY
IN THE MOUNTAINS ONCE AGAIN WITH SNOW LEVELS IN THE 5 TO 6
THOUSAND FOOT RANGE AND AGAIN 1 TO 4 INCHES LIKELY. EXPECT DRY
CONDITIONS WEDNESDAY AS AN UPPER LEVEL RIDGE BUILDS IN FROM THE
WEST. AFTER SEVERAL DAYS OF VERY MILD TEMPERATURES THE BEGINNING OF
THE WEEK TODAY THROUGH WEDNESDAY SHOULD SEE NEAR SEASONAL NORMAL
HIGH TEMPERATURES.
GK

.LONG TERM...THURSDAY THROUGH MONDAY.

A STRONG HIGH PRESSURE RIDGE WILL DOMINATE MOST OF THE EXTENDED.
EXPECT SOME MOISTURE TO SPILL OVER THE TOP OF THE RIDGE ON THURSDAY
WHICH COULD PRODUCE SOME LIGHT PRECIPITATION AROUND THE ISLAND PARK
AREA. OTHERWISE EXPECT DRY AND EXTREMELY WARM TEMPS FOR LATE WEEK
AND INTO THE WEEKEND. MANY GFS ENSEMBLE MEMBERS AND THE 00Z ECMWF
ARE BRINGING SOME ENERGY INTO THE CENTRAL CALIFORNIA COAST AND
MOVING THAT SYSTEM INLAND FOR LATE WEEKEND AND EARLY NEXT WEEK.
GIVEN THE STRENGTH OF THE RIDGE AND THE AMOUNT OF DRY AIR IN
PLACE...NOT CONFIDENT THAT MUCH IF ANY PRECIPITATION WILL OCCUR
ACROSS THE AREA. KEPT SLIGHT CHANCES IN FOR SUNDAY AND MONDAY FOR
NOW.

VALLE

&&

.AVIATION...A MOIST SYSTEM WILL MOVE THROUGH THE SYSTEM TODAY. THIS
WILL BRING SHOWERS TO MUCH OF THE HIGHLANDS AND MOUNTAINS TODAY.
COULD SEE SOME SHOWERS IN THE SNAKE PLAIN WITH THE BEST CHANCES THIS
MORNING. IF THIS OCCURS...MVFR CEILINGS ARE POSSIBLE. WILL SEE GUSTY
WINDS DEVELOP THIS AFTERNOON.

VALLE

&&

.PIH WATCHES/WARNINGS/ADVISORIES...
WIND ADVISORY FROM NOON TODAY TO 9 PM MDT THIS EVENING
IDZ017-020-021.

&&

$$







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