747
FXUS65 KPIH 180258
AFDPIH
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
758 PM MST MON FEB 17 2025
UPDATE
UPDATED FORECAST TO CANCEL SOME OF THE WINTER WEATHER ADVISORIES,
MAINLY THE SOUTHERN HIGHLAND ZONES. RADAR SHOWS MOST SNOW HAS
ENDED THERE AND MODELS SHOW NO ADDITIONAL SIGNIFICANT
ACCUMULATIONS OVERNIGHT. STILL SEEING SOME MINOR IMPACTS FROM A
FEW REMAINING SNOW SHOWERS ACROSS THE EASTERN AND SOUTHEASTERN
HIGHLANDS, SO LET THE HEADLINES CONTINUE INTO THE OVERNIGHT HOURS.
13
PREV DISCUSSION
/ISSUED 225 PM MST MON FEB 17 2025/
SHORT TERM...PRESIDENTS DAY THROUGH TUESDAY NIGHT.
MIDDAY RADAR IMAGERY SHOWS A MIX OF ISOLATED TO SCATTERED RAIN
AND SNOW SHOWERS CONTINUING ACROSS SE IDAHO WITH THE POTENTIAL FOR
MODERATE TO HEAVY SNOW AT TIMES ASSOCIATED WITH MORE ORGANIZED
BANDS OR SHOWERS. PRECIPITATION CHANCES WILL CONTINUE INTO
TUESDAY, SHIFTING EAST AS A DRIER AIRMASS BUILDS IN FROM THE WEST
COURTESY OF A TRANSITORY RIDGE OF HIGH PRESSURE SHIFTING INTO THE
PACNW FROM THE PACIFIC. ANY ADDITIONAL SNOW ACCUMULATIONS TODAY
THROUGH TUESDAY WILL REMAIN LIGHT FOR MOST WITH MORE MODERATE
TOTALS POSSIBLE ACROSS HIGHER ELEVATIONS SE OF THE SNAKE RIVER
PLAIN. THIS IS WHERE A MIX OF WINTER WEATHER ADVISORIES AND WINTER
STORM WARNINGS REMAIN IN EFFECT THROUGH TONIGHT AHEAD OF LIGHTER
SNOW RETURNING TOMORROW. OUTSIDE OF ISOLATED SNOW SHOWERS ALONG
THE WYOMING BORDER REGION LATER IN THE DAY TUESDAY, CONDITIONS
WILL TREND PREDOMINANTLY DRY REGIONWIDE AHEAD OF OUR NEXT SYSTEM
MOVING IN WEDNESDAY.
WINDS WILL REMAIN ELEVATED THROUGH TUESDAY AIDED BY 20-35 KT 700
MB WINDS ALOFT, SUPPORTING WIND GUSTS TO AROUND 20-40 MPH OF WHICH
WILL BE STRONGEST ACROSS THE SNAKE RIVER PLAIN AHEAD OF LIGHTER
WINDS RETURNING STARTING LATER IN THE DAY TUESDAY. WHILE AN ARCTIC
AIRMASS DESCENDS OUT OF CANADA EAST OF THE CONTINENTAL DIVIDE,
WESTERLY FLOW FROM THE PACIFIC WILL CONTINUE TO BRING NEAR NORMAL
TEMPERATURES TO SE IDAHO WITH HIGHS IN THE 20S/30S/40S AND LOWS IN
THE TEENS/20S/30S THROUGH MIDWEEK. SOME OF OUR COLDER MOUNTAIN
BASINS COULD ALSO END UP SEEING LOWS IN THE SINGLE DIGITS BELOW
AND ABOVE ZERO. MACKAY
LONG TERM...WEDNESDAY THROUGH NEXT MONDAY.
HE EXTENDED PERIOD BEGINS WITH TROUGH MOVING INTO THE PACIFIC NW
WHICH WILL BRING THE REGION ANOTHER SHOT OF WINTER WEATHER
BEGINNING MID-MORNING WEDNESDAY AND CONTINUING INTO MUCH OF THE
DAY ON THURSDAY. THIS SYSTEM LACKS THE DEEP MOISTURE OF SOME OF
OUR PREVIOUS SYSTEMS OVER THE PAST WEEK BUT IT'LL STILL BRING
ACCUMULATING SNOWFALL TO THE REGION...JUST NOT AS MUCH. CURRENT
TOTALS RIGHT NOW LOOK TO BE IN THE 1-2 INCH RANGE FOR LOWER
VALLEYS WITH ABOUT 2-4 ACROSS THE HIGHER TERRAIN OF THE CENTRAL
MOUNTAINS AND EASTERN HIGHLANDS. SIMILAR TO PAST EVENTS, TEMPS
COULD WARM ENOUGH IN THE LOWER SNAKE PLAIN AND MAGIC VALLEY JUST
ENOUGH TO BRING IN SOME MIXED PRECIP OR ALL RAIN WHICH COULD EAT
INTO THE TOTALS ABOVE AS TEMPS CONTINUE TO HOVER IN THAT MARGINAL
ZONE DURING THE DAYTIME HOURS.
BEHIND THIS SYSTEM, MODELS ARE IN GOOD AGREEMENT OF A QUIETER
WEATHER PERIOD WITH GRADUALLY WARMING TEMPERATURES INTO THE
WEEKEND AND EARLY NEXT WEEK. WILL LIKELY SEE SOME SHOWER POTENTIAL
ACROSS THE HIGHER TERRAIN OF THE EASTERN HIGHLANDS AS A BIT OF
MOISTURE OVERTOP THE RIDGE ALLOWING FOR SOME LOW-END POPS BUT IT
SHOULDN'T BE ANYTHING IMPACTFUL. BY SUNDAY AND INTO EARLY NEXT
WEEK, TEMPS IN THE MAGIC VALLEY AND INTO THE LOWER SNAKE PLAIN
COULD BE FLIRTING WITH 50 DEGREES FOR DAYTIME HIGHS. MCKAUGHAN
AVIATION...18Z TAFS THROUGH 18Z TUESDAY.
WIDESPREAD CLOUD COVER CONTINUES ACROSS THE REGION LEADING TO
MOSTLY MVFR CONDITIONS AT ALL EASTERN IDAHO TERMINALS.
INTERMITTENT IFR CONDITIONS AT KIDA WILL LIKELY CONTINUE THROUGH
THE AFTERNOON HOURS WITH IFR INCREASINGLY LIKELY THERE OVERNIGHT,
AS WELL AS AT KPIH. SOME SNOW SHOWERS WILL BE POSSIBLE AS WELL
REGIONWIDE BUT THESE WOULD BE OF A SHORT DURATION AND CURRENT
FORECAST MAINTAINS VCSH AS SUCH. WINDS WILL REMAIN IN THE 10-15 KT
RANGE THROUGH THE PERIOD. MCKAUGHAN
PIH WATCHES/WARNINGS/ADVISORIES
WINTER STORM WARNING UNTIL 5 AM MST TUESDAY FOR IDZ060-063>066.
WINTER WEATHER ADVISORY UNTIL 5 AM MST TUESDAY FOR IDZ061-062.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page