583
FXUS65 KPIH 261758
AFDPIH
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
1158 AM MDT SUN APR 26 2026
KEY MESSAGES
- COLD TEMPERATURES AGAIN TONIGHT MEANS FROST ADVISORIES AND
FREEZE WARNINGS. SAME IS LIKELY FOR MONDAY NIGHT, AND FOR SOME
ON TUESDAY NIGHT.
- 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 218 AM MDT SUN APR 26 2026
TODAY THROUGH TUE NIGHT. AN UPPER LEVEL TROUGH EXTENDING
WESTWARD FROM AN UPPER LEVEL LOW CENTERED IN SOUTH CENTRAL
CANADA WILL BRING UP SOME UNSTABLE AND SLIGHTLY MOIST AIR INTO
THE GEM STATE. THIS WILL BRING A SLIGHT CHANCE TO LIKELY LEVEL
OF SHOWERS INTO THE FORECAST AREA FOR THIS AFTERNOON, WITH
HIGHEST PROBABILITY OF PRECIPITATION ALONG THE ID-WY BORDER AND
THE EASTERN ID-UT BORDER. THE TROUGH WILL LINGER OVERHEAD ON
MON, THEN EXIT ON TUE. LEFTOVER INSTABILITY ON TUE WILL CONTINUE
SOME SHOWERS AND THUNDERSTORMS, MOSTLY DRIVEN BY DAYTIME
HEATING, SO HIGHEST THREAT IN THE AFTERNOON.
TEMPERATURES WILL WARM COMPARED TO YESTERDAY, MOSTLY DUE TO NO
MORE RECORD COLD IN THE TEENS AS IT WAS SAT MORNING. MON
TEMPERATURES WILL BE ABOUT THE SAME AS SUN TEMPERATURES, BOTH
LOWS AND HIGHS. SO EXPECT ANOTHER FROST ADVISORY OR FREEZE
WARNING FOR THE FIVE ZONES IN THE DISTRICT. TUE MORNING LOWS
WILL ALSO LIKELY BE ONLY SLIGHTLY WARMER THAN THE TWO PREVIOUS
DAYS, BUT THE AFTERNOON DECREASING CLOUDINESS WILL ALLOW A
WARMING THAT SHOULD PREVENT THE SUB-FREEZING TEMPERATURES ON TUE
NIGHT.
WIND SHOULD STAY BELOW ADVISORY CRITERION, BUT IT WILL STILL BE
BREEZY TO WINDY FOR BOTH SUN AND MON AFTERNOON. WIND ON TUE WILL
BE EVEN LIGHTER, MOSTLY BREEZY.
WED THROUGH SAT. WHILE WED MAY BE A TRANSITION DAY FROM WET
WEATHER TO DRY, BY THU AN BRIEF UPPER LEVEL RIDGE WILL BE
SETTING UP OVER THE NORTHERN ROCKIES FOR ALL SOLUTION CLUSTERS.
EVEN BY WED TEMPERATURES ARE BACK TO NEAR NORMAL, AND BY FRI
TEMPERATURES ARE SOLIDLY WARMER THAN NORMAL. WARMING TREND
CONTINUES FOR SAT. THUNDERSTORM RISK TURNS NEGLIGIBLE AFTER THU.
WIND CONTINUES LIGHT TO MODERATE THIS ENTIRE 4 DAY PERIOD.
AVIATION /18Z TAFS THROUGH 18Z MONDAY/
ISSUED AT 1123 AM MDT SUN APR 26 2026
SOME MOISTURE HAS WORKED NORTH INTO EASTERN IDAHO AROUND UPPER
LEVEL LOW AND MAIN IMPACT WILL BE SOME LOWER CEILINGS MAINLY AT
DIJ WITH SOME MVFR CONDITIONS POSSIBLE. EXPECT SOME LIFTING OF
CLOUDS TONIGHT WITH VFR CONDITIONS WIDESPREAD WITH ONLY MID
LEVEL TO HIGH LEVEL CLOUD CEILINGS. GENERAL SLOPE WINDS WITH 10
TO 15 KNOTS IN AFTERNOON AT BYI, IDA AND BYI.
PIH WATCHES/WARNINGS/ADVISORIES
FREEZE WARNING FROM 3 AM TO 10 AM MDT MONDAY FOR IDZ051>055.
DISCUSSION...GK
AVIATION...MESSICK
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