748
FXUS65 KPIH 221740
AFDPIH
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
1040 AM MST SAT NOV 22 2025
KEY MESSAGES
- DENSE FOG ADVISORY THROUGH 10AM THIS MORNING FOR MANY.
- REMAINING DRY THROUGH THE WEEKEND BEFORE MONDAY COLD FRONT.
- UNSETTLED CONDITIONS MAY CONTINUE THROUGH THE THANKSGIVING HOLIDAY,
BUT NO SIGNIFICANT IMPACTS ARE EXPECTED AT THIS TIME.
SHORT TERM /THROUGH SUNDAY/
ISSUED AT 315 AM MST SAT NOV 22 2025
ANOTHER MORNING OF LOW STRATUS AND VISIBILITIES DOWN TO A QUARTER OF
A MILE OR LESS IN LOCALLY DENSE FOG. THE DENSE FOG ADVISORY REMAINS
IN EFFECT THROUGH 10 AM MST THIS MORNING FOR THE SNAKE RIVER PLAIN,
EASTERN MAGIC VALLEY, MONTANA DIVIDE REGION, TETON VALLEY, SHOSHONE
REGION, AND ARCO/MUD LAKE DESERT. ANYONE TRAVELING NOW THROUGH LATER
MORNING SHOULD BE PREPARED FOR THE POSSIBILITY OF SLICK SPOTS ON
ROADWAYS AND SUDDEN REDUCTIONS IN VISIBILITY.
IF THE STRATUS MANAGES TO CLEAR EARLY ENOUGH THIS AFTERNOON, DAYTIME
TEMPERATURES SHOULD BE ABLE TO WARM INTO THE MID-40S ACROSS OUR
VALLEYS, WHICH IS JUST A TOUCH WARMER THAN YESTERDAY'S HIGHS. MODELS
INDICATE LESS DENSE STRATUS AND FOG TONIGHT INTO SUNDAY MORNING, SO
OVERNIGHT TEMPERATURES ARE EXPECTED TO RUN A BIT COLDER.
LONG TERM /SUNDAY NIGHT THROUGH FRIDAY/
ISSUED AT 155 PM MST FRI NOV 21 2025
THE NEXT SHORTWAVE FEATURE ARRIVES LATE SUNDAY THROUGH EARLY
TUESDAY, WITH COLD FRONT PASSAGE DURING THE DAY MONDAY. CURRENT NBM
MEANS INCREASE THE WINDS ALONG AND BEHIND THE FRONT TO BETWEEN 25
AND 30 MPH WITH GUST POTENTIAL OVER 40 MPH. LIGHT PRECIPITATION
APPEARS MAINLY CONFINED TO HIGHER ELEVATIONS AT THIS TIME. COOLER
TEMPERATURES FOLLOW TUESDAY, WITH LOWER ELEVATION HIGHS DROPPING
INTO THE 30S. FOR THE HOLIDAY PERIOD, MODELS ARE SHOWING SIGNS OF
SHIFTING GEARS AGAIN. ALTHOUGH THE ENSEMBLE CLUSTERS AGREE ON A
RIDGE THROUGH THE WESTERN STATES, SOME OF THE DETERMINISTIC RUNS ARE
A BIT FLATTER WITH THE FLOW ALOFT, LEADING TO ENERGY PUSHING THROUGH
THE PACNW AND PRODUCING LIGHT PRECIPITATION ACROSS THE NORTHERN TIER
STATES. TEMPERATURES REMAIN MOSTLY MILD, WHICH WOULD KEEP SNOW
GENERALLY ABOVE VALLEY FLOORS, AND THUS LIMITING IMPACTS FOR HOLIDAY
TRAVEL CONCERNS FOR WEDNESDAY THROUGH FRIDAY. AT LEAST FOR NOW.
AVIATION /18Z TAFS THROUGH 18Z SUNDAY/
ISSUED AT 1040 AM MST SAT NOV 22 2025
SATELLITE IMAGERY SHOWS BROAD SWATH OF STRATUS THROUGHOUT MUCH
OF THE SNAKE PLAIN THIS MORNING, EXTENDING INTO THE TETON AND
WOOD RIVER VALLEYS. EDGES OF THE STRATUS SHIELD ARE SHOWING
SIGNS OF ERODING THIS AFTERNOON, WITH CONDITIONS ALREADY
IMPROVING AT DIJ/BYI/PIH. WILL TAKE A LITTLE LONGER FOR EDGE OF
STRATUS AND CLEARING TO REACH IDA, AND EVEN LONGER FOR EROSION
AT SUN AS MOISTURE CONTINUES TO BE PUSHED UP THE WOOD RIVER
VALLEY. BUT, BY LATE AFTERNOON OR EARLY EVENING, ANTICIPATION IS
FOR ALL SITES TO RETURN TO VFR CIGS. THERE IS STILL MOISTURE
PRESENT FOR THE DEVELOPMENT OF STRATUS AND FOG OVERNIGHT, BUT AT
THIS TIME THE COVERAGE APPEARS TO BE PATCHIER IN SPREAD. TRENDED
THE SNAKE PLAIN TERMINALS BYI/PIH/IDA TOWARD MVFR CONDITIONS
AFTER 06Z TONIGHT, AND LEFT WIGGLE ROOM TO TREND EITHER WAY IN
LATER FORECAST UPDATES.
PIH WATCHES/WARNINGS/ADVISORIES
NONE.
SHORT TERM...CROPP
LONG TERM...DMH
AVIATION...DMH
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