779
FXUS65 KPIH 271737
AFDPIH
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
1137 AM MDT MON APR 27 2026
KEY MESSAGES
- COLD OVERNIGHT LOWS CONTINUE INTO EARLY IN THE WORK WEEK. A
FREEZE WARNING IS IN EFFECT FOR THIS MORNING AND A FREEZE
WATCH IS IN EFFECT FOR TONIGHT.
- WEAK UPPER LEVEL TROUGHING OVER THE NORTHERN ROCKIES WILL
INTERACT WITH MOISTURE MOVING IN FROM THE SOUTH TO GENERATE
SHOWERS AND THUNDERSTORMS TODAY. TROUGHING CONTINUES THROUGH
AT LEAST WEDNESDAY NIGHT.
- AFTERNOON SLIGHT CHANCE RISK OF THUNDERSTORMS OCCURS EVERY DAY
THROUGH AT LEAST THURSDAY.
DISCUSSION
ISSUED AT 302 AM MDT MON APR 27 2026
A TROUGH OF LOW PRESSURE WILL REMAIN OVER THE REGION THROUGH
WEDNESDAY. WE'LL SEE ISOLATED TO SCATTERED SHOWERS WITH THE BEST
CHANCES IN THE AFTERNOON. TODAY THE BEST CHANCES EXTEND FROM
THEN CENTRAL MOUNTAINS THROUGH THE UPPER SNAKE RIVER PLAIN INTO
THE EASTERN HIGHLANDS. BUT ON TUESDAY AND WEDNESDAY, THE CHANCES
SHIFT MORE INTO THE MOUNTAINS AND HIGHLANDS AS THE TROUGH
WEAKENS. ADDITIONAL QPF LOOKS LIGHT, PERHAPS UP TO 0.25 INCHES
ON SOME OF THE RIDGE TOPS IN THE CENTRAL MOUNTAINS AND ALONG THE
MONTANA BORDER. THIS WOULD TRANSLATE TO A COUPLE INCHES OF
SNOW. THE BIGGEST IMPACT REMAINS THE COLD TEMPERATURES. MORNING
LOW TEMPERATURES WILL LIKELY REMAIN NEAR OR BELOW FREEZING INTO
TUESDAY MORNING AT LEAST AND PROBABLY EVEN WEDNESDAY MORNING.
THEN WE FALL INTO A GRAY AREA OF BORDERLINE FROST/FREEZE FOR THE
REST OF THE WEEK. IT REALLY ISN'T UNTIL SATURDAY MORNING WHEN
WE ARE REASONABLY "SAFE" FROM FROST/FREEZE IN OUR LOWER
ELEVATION COMMUNITIES. ON THE HIGH TEMPERATURES SIDE OF THINGS,
TEMPS WILL CLIMB INTO THE 60S BY MIDWEEK WITH 70S BY END WEEK.
THE WEEKEND LOOKS MAINLY DRY WITH ANOTHER LOW POTENTIALLY
BRINGING ANOTHER ROUND OF PRECIPITATION LATE WEEKEND INTO EARLY
NEXT WEEK. TEMPERATURES DO NOT LOOK QUITE AS COLD AS WE SEEN
WITH THIS LAST OUTBREAK. ALTHOUGH WE COULD STILL SEE ANOTHER
ROUND OF FROST/FREEZE ISSUES.
AVIATION /18Z TAFS THROUGH 18Z TUESDAY/
ISSUED AT 1118 AM MDT MON APR 27 2026
MAIN IMPACT THIS AFTERNOON THE 10 TO 20 KNOT SUSTAINED WINDS AT
IDA, PIH AND BYI WITH 20 TO 30 KNOT GUSTS SHOULD DIE DOWN BY 02
TO 03Z. AFTERNOON CONVECTION MAY PRODUCE SOME VICINITY SHOWERS
MAINLY AT SUN, DIJ AND IDA WITH BEST CHANCE ON SITE AT SUN AND
DIJ. ONLY A LOW PROBABILITY OF SEEING MVFR CEILINGS MAINLY AT
DIJ AND SUN IN A RAIN OR SNOW SHOWER.
PIH WATCHES/WARNINGS/ADVISORIES
FREEZE WARNING FROM 3 AM TO 9 AM MDT TUESDAY FOR IDZ051>055.
DISCUSSION...13
AVIATION...GK
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