Area Forecast Discussion
Issued by NWS Pocatello, ID

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000
FXUS65 KPIH 281052
AFDPIH

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
ISSUED BY NATIONAL WEATHER SERVICE NOISE ID
452 AM MDT SAT MAR 28 2015

.SHORT TERM...TODAY THROUGH MONDAY NIGHT.  COLD FRONT IS ON SCHEDULE
TO PASS DURING THE DAYTIME HOURS TODAY MAKING TEMPERATURE FORECAST
DIFFICULT DURING THE EARLY AFTERNOON. NOT MUCH MOISTURE OR CLOUDINESS
EXPECTED WITH THIS ESPECIALLY THE FARTHER SOUTH YOU ARE IN THE
FORECAST AREA.  THERE IS SOME INSTABILITY BUT WITH VERY LIMITED
MOISTURE ON THE ORDER OF 0.25 TO 0.40 INCH.  A NO-BRAINER FOR THIS
FRONT WITH VERY WINDY CONDITIONS EXPECTED OVER THE SNAKE RIVER PLAIN
AND THE VALLEYS AND HIGHLANDS. SOUTHWEST TO WEST WINDS SHOULD PEAK
AROUND 1100.  MAIN FOCUS IS THE INTERSTATE 15/86/84 CORRIDORS...
BUT EVEN THE ARCO DESERT AND PARTS OF THE NORTH SIDE OF THE PLAIN.
HAVE ADDED BLOWING DUST TO THE GRIDS. THE TROUGH AND FRONT ARE OUT
OF IDAHOBY EARLY EVENING. BREEZY CONDITIONS LEFT IN ITS WAKE AND
TEMPERATURES COOLER. SKIES CLEAR RAPIDLY...WINDS DECREASE
SUBSTANTIALLY TO ALLOW STRONG WARMING THROUGH NOT BACK TO NEAR
RECORD WARMTH. /MESSICK

.LONG TERM...TUESDAY THROUGH SATURDAY NIGHT. A STRONG UPPER TROUGH
MOVING INTO THE PACNW ON TUESDAY WILL BRING SNOW TO THE CENTRAL
MOUNTAINS...AND SPREADING TO THE EASTERN HIGHLANDS BY TUESDAY
AFTERNOON. PCPN WILL MAINLY IMPACT THE NORTHERN PARTS OF THE
FORECAST AREA...BUT THE FAST MOVEMENT OF THE SYSTEM WILL LIMIT PCPN
AMOUNTS.  THE SNAKE RIVER PLAIN AND SOUTHERN HIGHLANDS ARE
EXPECTED TO REMAIN DRY.  STRONG WINDS ARE EXPECTED ON TUESDAY WITH A
COLD FRONT PASSAGE.  A FEW SNOW SHOWERS WILL LINGER THROUGH WEDNESDAY
OVER THE CENTRAL MOUNTAINS AND UPPER SNAKE HIGHLANDS. MONOR UPPER
TROUGH QUICKLY FOLLOWS PREVIOUS SYSTEM WEDNESDAY NIGHT...WITH PCPN
BECOMING MORE WIDESPREAD ON THURSDAY. BROAD RIDGING MOVES IN FOR
FRIDAY WITH THE ECMWF MORE AMPLIFIED THAN THE GFS.  A DEEP UPPER
TROUGH APPROACHES THE PAC LATE SATURDAY. THIS RESULTS IN INCREASING
SOUTHWEST FLOW...AND INCREASED CHANCES FOR MOUNTAIN PCPN.  TEMPS
WILL REMAIN COOL THROUGH THE END OF THE WEEK...WITH A LITTLE RECOVERY
BY SATURDAY. /HEDGES

&&

.AVIATION...A COLD FRONT MOVING THROUGH THE AREA TODAY BRINGS STRONG
SWLY WINDS TO THE SNAKE RIVER PLAIN...DIMINISHING TONIGHT. A FEW
RAIN AND SNOW SHOWERS ARE POSSIBLE IN THE CENTRAL MOUNTAINS...NOT
EXPECTED ANY SIG IMPACT ON KSUN. VFR CONDITIONS. /HEDGES

&&

.PIH WATCHES/WARNINGS/ADVISORIES...
WIND ADVISORY FROM 8 AM THIS MORNING TO 5 PM MDT THIS
AFTERNOON IDZ017-020-021.

WIND ADVISORY FROM 8 AM THIS MORNING TO 5 PM MDT THIS
AFTERNOON IDZ022.

&&

$$



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