123
FXUS65 KPIH 030805
AFDPIH
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
205 AM MDT FRI APR 3 2026
KEY MESSAGES
- WINTER WEATHER ADVISORY ENDS BY NOON TODAY. SNOW ENDS BY 6 PM
THIS EVENING.
- HIGH PRESSURE WITH NORTHWESTERLY AIR FLOW MEANS CLEAR SKIES
BUT A SLOW WARM UP THROUGH MONDAY.
- TEMPERATURES LEVEL OFF TUESDAY AS THE NEXT LOW ARRIVES FOR
TUESDAY NIGHT, THEN A SECOND LOW ARRIVES FOR WEDNESDAY NIGHT
THROUGH FRIDAY MORNING.
DISCUSSION
ISSUED AT 135 AM MDT FRI APR 3 2026
TODAY THROUGH SUNDAY NIGHT. SNOW STORM HAS CLEAR ALL BY THE
EASTERN AND SOUTHEASTERN HIGHLANDS AS FAR AS THE FORECAST AREA
IS CONCERNED. FIRST 18 HOURS OF FORECAST CONTINUES TO GENERATE
RAIN AND SNOW OVER THAT AREA THROUGH 04/06Z. AN UPPER LEVEL
RIDGE BUILDS INTO THE NORTHERN ROCKIES WITH THE AXIS STAYING TO
THE WEST WITH A SHARP SE TO NW ORIENTATION. THIS KEEPS THE UPPER
LEVEL FLOW FROM THE NORTHWEST THROUGH THE WEEKEND. ON SUN NIGHT,
THE UPPER LEVEL RIDGE AXIS IS SHOVED EASTWARD TO THE ID-OR
BORDER, BUT STILL STAYING DRY. THIS UPPER LEVEL RIDGING KEEPS
SKIES CLEAR UNTIL SUN AFTERNOON, THEN LOOK FOR INCREASING
CLOUDINESS SUN NIGHT.
SO TEMPERATURES WILL WARM, BUT THE NORTHWESTERLY AIR FLOW SHOULD
MEAN A SLOW WARM UP DESPITE THE STRENGTHENING INSOLATION. BY SUN
AFTERNOON HIGHS SHOULD BE 8 TO 12 DEG F ABOVE NORMAL FOR THE
TIME OF YEAR. LOW TEMPERATURES IN THE SNAKE RIVER PLAIN WILL
FLIRT WITH BELOW FREEZING BOTH TONIGHT, SAT NIGHT, AND SUN
NIGHT, BUT WITH A WARMING TREND.
WIND MAY STAY ELEVATED TODAY, BUT NOWHERE NEAR THE MAGNITUDE OF
YESTERDAY. EXPECT LIGHT, MAINLY SLOPE-VALLEY WIND EFFECT.
MON THROUGH THU...THE NEXT UPPER LEVEL TROUGH MAKES IT ONSHORE
IN OR AND CA AT THE START OF THIS PERIOD. THIS TROUGH MERELY
FLATTENS THE RIDGE TO MORE WESTERLY FLOW, LEAVING LITTLE IN THE
WAY OF PRECIPITATION FOR MON. A SECOND, STRONGER TROUGH DIGS
SOUTH SOUTHEASTWARD OUT OF BRITISH COLUMBIA, BRINGING STRONG
WIND AND PRECIPITATION. THE WIND WILL BE TYPICAL SPRING-STYLE
STRONG WITH A POTENTIAL FOR ADVISORY CRITERIA, BUT PRECIPITATION
HAS ONLY SLIGHT CHANCE OF ACCUMULATING AT LOWER ELEVATIONS WITH
LOW CHANCE POPS FOR THE SNAKE RIVER PLAIN AND EVEN FOR PLACES
LIKE STANLEY. AND PRECIPITATION DOES NOT REACH THIS FAR SOUTH
UNTIL WED, SO EVEN TUE SHOULD BE MAINLY WIND.
TEMPERATURES EVEN AT 6000FT-7000FT ELEVATION WILL BE WARMING
ABOVE FREEZING EVERY DAY DURING THE PERIOD, SO WHILE THERE WILL
BE OVERNIGHT SNOW ACCUMULATION, IT SHOULD AT LEAST PARTIALLY
MELT DURING THE DAY. SNAKE RIVER PLAIN OVERNIGHT LOWS SHOULD
MAINLY STAY ABOVE FREEZING. AFTERNOON HIGHS ARE COOLER, BUT
STILL STAYING ABOVE NORMAL UNTIL PERHAPS THU WHEN THEY WILL BE
NEAR NORMAL.
WIND DURING THIS EXTENDED PERIOD SHOULD BECOME BREEZY TO WINDY
EVERY AFTERNOON, PERHAPS VERY WINDY ON TUE WITH THE SECOND
TROUGH.
AVIATION /06Z TAFS THROUGH 06Z SATURDAY/
ISSUED AT 1003 PM MDT THU APR 2 2026
WINDS HAVE RELAXED AT IDA MOST LIKELY FOR THE NIGHT. WINDS WILL
LIKELY REMAIN GUSTY AT BYI AND PIH THROUGH THE NIGHT. SNOW WILL
LIKELY REMAIN PROBLEMATIC AT DIJ INTO FRIDAY MORNING AND THEN
THEY'LL PROBABLY DEAL WITH LOW STRATUS. SNOW WILL LIKELY REMAIN
IN THE HILLS JUST EAST OF IDA, AM CONCERNED THAT SOME MVFR
CEILINGS COULD TRY TO WORK INTO IDA AND PIH BUT NOT ENOUGH
CONFIDENCE. WINDS AT SUN WILL REMAIN DOWNVALLEY THROUGH THE
NIGHT AND THEN SWITCH TO UPVALLEY AROUND 18Z.
PIH WATCHES/WARNINGS/ADVISORIES
WINTER WEATHER ADVISORY UNTIL NOON MDT TODAY FOR IDZ060-063-
064-066.
DISCUSSION...MESSICK
AVIATION...13
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