228
FXUS65 KPIH 181008
AFDPIH
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
308 AM MST WED FEB 18 2026
KEY MESSAGES
- CHANCES FOR SNOW CONTINUES INTO WEDNESDAY NIGHT
- HEAVIER SNOW EXPECTED ALONG AND EAST OF I-15 IN THE HIGHER
ELEVATIONS
- BRISK CONDITIONS CONTINUE INTO WEDNESDAY EVENING
DISCUSSION
ISSUED AT 306 AM MST WED FEB 18 2026
A LOW PRESSURE SYSTEM WILL LIFT NORTHWARD OUT OF NORTHEAST
NEVADA THROUGH CENTRAL IDAHO AND INTO SOUTHWEST MONTANA TODAY.
SNOW ASSOCIATED WITH AN ASSOCIATED WARM FRONTAL BOUNDARY IS
LIFTING NORTH THROUGH EAST IDAHO EARLY THIS MORNING. LATER THIS
MORNING, CLOSER TO MIDDAY, WE'LL SEE THE COLD FRONT PUSH THROUGH
EAST IDAHO. SNOW AMOUNTS SEEM LIKE THEY HAVE COME INTO BETTER
AGREEMENT. HEAVIEST AMOUNTS ARE OVER THE EASTERN AND SOUTHEAST
HIGHLANDS WITH 4 TO 8 INCHES LIKELY IN THE LOWER VALLEYS WITH UP
TO A FOOT ON PASSES, UPPER SLOPES, AND RIDGES. THE SNOW TOTALS
FOR THE SNAKE RIVER PLAIN AND EASTERN MAGIC VALLEY ARE SITTING
AROUND AN INCH OR TWO. MEANWHILE, THE CENTRAL MOUNTAINS ARE
ROUGHLY LOOKING AT 1 TO 4 IN THE VALLEYS WITH UP TO 7 INCHES ON
UPPER SLOPES AND RIDGES. THE ONE THING THAT COULD REALLY UPSET
THE FORECAST TOTALS IN THE SNAKE RIVER PLAIN WOULD BE THE
CONVERGENCE EVENT FOR WEDNESDAY NIGHT INTO THURSDAY MORNING
WHICH THE MODELS HAVE BEEN PICKING UP ON. RIGHT NOW, THAT LOOKS
LIKE AN ADDITIONAL INCH MAYBE TWO DEPENDING UPON WHERE IT SETS
UP AND FOR HOW LONG. WINDS WILL INCREASE SIGNIFICANTLY BEHIND
THE FRONT TOMORROW AFTERNOON WITH MODELS SHOWING A 70% CHANCE
THAT WE'LL SEE ADVISORY LEVEL WINDS ACROSS THE LOWER SNAKE PLAIN
INTO THE EASTERN MAGIC VALLEY AND SOUTH HILLS.
AS WE MOVE INTO THURSDAY AND FRIDAY, THERE MAY STILL BE A FEW SNOW
SHOWERS AROUND BECAUSE OF THE UPPER LEVEL TROUGH PASSING THROUGH.
ALTHOUGH ADDITIONAL SNOW AMOUNTS LOOK LIGHT. ONCE AGAIN, THIS
ASSUMES THAT THE CONVERGENCE BAND FROM WEDNESDAY NIGHT WEAKENS BY
THURSDAY MORNING. THE WEEKEND CONTINUES TO LOOK MOSTLY DRY WITH A
RIDGE OF HIGH PRESSURE SLIDING THROUGH.
AVIATION /12Z TAFS THROUGH 12Z THURSDAY/
ISSUED AT 306 AM MST WED FEB 18 2026
SNOW WILL PRODUCE IFR CONDITIONS THIS MORNING AT PIH, IDA AND
DIJ. SUN IS SITTING THE FENCE BETWEEN MVFR AND IFR WITH THE
HEAVIEST SNOW SKIRTING TO THEIR SOUTH. WINDS AT SUN WILL BE
UPVALLEY UNTIL FRONTAL PASSAGE AROUND MID MORNING WITH GUSTY
CROSSWIND LIKELY FOR THIS AFTERNOON. EXPECT BRISK CONDITIONS TO
DEVELOP THIS AFTERNOON AT SNAKE PLAIN SITES.
PIH WATCHES/WARNINGS/ADVISORIES
WIND ADVISORY FROM 9 AM THIS MORNING TO 8 PM MST THIS EVENING
FOR IDZ051-054>057.
WINTER WEATHER ADVISORY UNTIL 5 AM MST THURSDAY FOR IDZ058-059-
061>067.
WINTER STORM WARNING UNTIL 5 AM MST THURSDAY FOR IDZ060.
DISCUSSION...13
AVIATION...13
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