595
FXUS65 KPIH 211734
AFDPIH
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
1134 AM MDT TUE JUL 21 2026
KEY MESSAGES
- SLIGHT COOLING EXPECTED TODAY AHEAD OF NEAR NORMAL TO BELOW
NORMAL TEMPERATURES ON WEDNESDAY.
- MONSOON MOISTURE INCREASING WITH STORMS TRENDING SCATTERED
THROUGH MID-WEEK. LOCALLY HEAVY DOWNPOURS WITH OUTFLOW WINDS
UP TO 50 MPH POSSIBLE.
- DRY CONDITIONS AND ABOVE NORMAL TEMPERATURES RETURN LATE WEEK.
DISCUSSION
ISSUED AT 206 AM MDT TUE JUL 21 2026
EARLY MORNING RADAR SHOWS SHOWERS WITH A FEW EMBEDDED LIGHTNING
STRIKES WORKING THROUGH CENTRAL AND EXTREME SOUTHEAST IDAHO AS
FEATURED IN CAMS. SOUTHWEST FLOW WILL CONTINUE TO LIFT MONSOONAL
MOISTURE INTO SOUTHEAST IDAHO AND SUPPORT DAILY SHOWER AND
THUNDERSTORM CHANCES THROUGH MID TO LATE WEEK. SHOWER AND
THUNDERSTORM COVERAGE WILL TREND MORE SCATTERED TODAY WITH ACTIVITY
CONTINUING TO LIFT NORTHWARD AND PRIMARILY BEING FOCUSED ACROSS THE
CENTRAL MOUNTAINS AND EAST/SOUTHEAST HIGHLANDS THROUGHOUT THE DAY
AND AFTERNOON. TODAY'S HIGH TEMPERATURES WILL RUN SEVERAL DEGREES
COOLER THAN YESTERDAY'S. A SHORTWAVE ON WEDNESDAY WILL RESULT IN
BOTH INCREASED CONVECTIVE ACTIVITY AND A NOTICEABLE COOL DOWN WITH
TEMPERATURES RETURNING TO AROUND NORMAL TO SLIGHTLY BELOW NORMAL
WITH WIDESPREAD 80S ACROSS THE LOW ELEVATIONS. STORMS WILL BE
CAPABLE OF LOCALLY HEAVY RAINFALL WITH OUTFLOW WINDS THE STRONGEST
TODAY AT 40 TO 50 MPH AND CLOSER TO 35 TO 45 MPH ON WEDNESDAY.
DRY CONDITIONS AND ABOVE NORMAL TEMPERATURES RETURN LATE WEEK.
AVIATION /18Z TAFS THROUGH 18Z WEDNESDAY/
ISSUED AT 1126 AM MDT TUE JUL 21 2026
A FEW SHOWERS LINGER LATE THIS MORNING/EARLY THIS AFTERNOON, BUT WE
ARE SEEING A SHORT BREAK IN THE MONSOON MOISTURE AT THE MOMENT. THAT
IS EXPECTED TO CHANGE LATER THIS AFTERNOON AS THUNDERSTORMS BEGIN TO
POP UP ONCE AGAIN. PROB30 REMAINS IN THE TAF AT ALL SITES, BUT FOR
MANY, STORMS WILL ARRIVE AFTER 00Z THIS EVENING, SO MAY ONLY PRODUCE
GUSTY WINDS FOR A SHORT PERIOD BEFORE THEY BEGIN TO FIZZLE INTO MORE
SHOWERY ACTIVITY. HOWEVER, ANY STRONGER STORM THAT DOES GET GOING,
COULD PRODUCE STRONG GUSTS AROUND 40KTS. SHOWERS AND STORMS
INCREASE IN COVERAGE TOMORROW AND STORMS ON WEDNESDAY AREN'T
EXPECTED TO PRODUCE AS STRONG OF WIND GUSTS SINCE THEY WILL
PRODUCE MORE RAIN, SO EXPECT ANOTHER ROUND OF PROB30 IN THE
TAFS AT NEXT ISSUANCE.
FIRE WEATHER
ISSUED AT 206 AM MDT TUE JUL 21 2026
MONSOON MOISTURE WILL SUPPORT DAILY SHOWER AND THUNDERSTORM
CHANCES THROUGH MID TO LATE WEEK. STORMS WILL CONTINUE TO TREND
WETTER AND MORE SCATTERED THROUGH WEDNESDAY. ACTIVITY TODAY
WILL FAVOR FIRE WEATHER ZONES 413, 427, 475, AND 476. HEADING
INTO THE NIGHTTIME HOURS AND FURTHER INTO WEDNESDAY, COVERAGE
WILL SHIFT FURTHER EAST AND FAVOR ZONES 427, 425, 410, AND 411
BEFORE SCATTERED ACTIVITY OVERSPREADS ALL ZONES DURING THE
AFTERNOON. THIS WILL LIKELY NECESSITATE RED FLAG WARNINGS DUE TO
THUNDERSTORM COVERAGE. STORMS WILL BE CAPABLE OF LOCALLY HEAVY
DOWNPOURS WITH OUTFLOW WINDS THE STRONGEST TODAY AT 40 TO 50
MPH AND CLOSER TO 35 TO 45 MPH ON WEDNESDAY. TEMPERATURES WILL
RUN NORMAL TO BELOW NORMAL ON WEDNESDAY BEFORE DRY CONDITIONS
AND ABOVE NORMAL TEMPERATURES RETURN LATE WEEK.
PIH WATCHES/WARNINGS/ADVISORIES
NONE.
DISCUSSION...CROPP
AVIATION...AMM
FIRE WEATHER...CROPP
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