686
FXUS65 KSLC 231053
AFDSLC
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
453 AM MDT THU JUL 23 2026
KEY MESSAGES, ISSUED 1006 PM MDT WED JUL 22 2026
- DRIER AIR MOVES IN TOMORROW, LIMITING CHANCES FOR AFTERNOON
SHOWERS AND THUNDERSTORMS.
- SOUTHERLY FLOW REDEVELOPING FRIDAY WILL ALLOW MONSOONAL MOISTURE
TO GRADUALLY FILL BACK IN THROUGH THE WEEKEND, WITH AN ATTENDANT
FLASH FLOOD RETURNING AS A RESULT.
- HEAT CONCERNS RETURN TO UTAH STARTING THIS FRIDAY, LASTING THROUGH
AT LEAST MONDAY AS TEMPERATURES RISE ACROSS THE REGION WITH
ANOMALOUSLY WARM OVERNIGHT TEMPERATURES OFFERING LITTLE RELIEF.
DISCUSSION, ISSUED 1006 PM MDT WED JUL 22 2026
CONVECTIVE ACTIVITY IS WANING ACROSS THE REGION
TONIGHT AS DRIER AIR WORKS INTO THE REGION UNDER INCREASING WEST-
NORTHWESTERLY FLOW ALOFT COURTESY OF A PASSING MID-LEVEL TROUGH
TO OUR NORTH. THIS DRIER AIR WILL PERSIST INTO THURSDAY, WITH
PWATS DIPPING TO THE 0.7-0.9" RANGE ACROSS MOST OF THE REGION
EXCEPT FAR SOUTHERN UTAH. AS A RESULT, MORE LIMITED CONVECTIVE
ACTIVITY IS EXPECTED THURSDAY AFTERNOON AND EVENING ACROSS MUCH OF
THE REGION. COVERAGE WILL BE MORE ISOLATED IN NATURE, AND MAINLY
FAVORED ACROSS FAR SOUTHERN UTAH AND PORTIONS OF EASTERN UTAH.
THIS DRIER AIRMASS WILL BE SHORT LIVED AS THE TROUGH QUICKLY
EJECTS INTO THE CENTRAL PLAINS ON FRIDAY, LEAVING UTAH AND
SOUTHWEST WYOMING BACK UNDER A BROAD RIDGING PATTERN. AS SUCH, A
MODEST INFLUX OF MONSOONAL MOISTURE SPREADS BACK INTO THE FORECAST
AREA ON FRIDAY, YIELDING MORE WIDESPREAD SHOWERS AND
THUNDERSTORMS MAINLY ACROSS CENTRAL AND SOUTHERN UTAH. THESE AREAS
WILL SEE A HEIGHTENED FLASH FLOOD RISK RETURN AS A RESULT, WITH
WPC HIGHLIGHTING AREAS GENERALLY EAST OF I-15 AND SOUTH OF I-70
FOR A MARGINAL RISK (LEVEL 1/4) FOR EXCESSIVE RAINFALL. THE BROAD
RIDGE GRADUALLY SHIFTS BACK EASTWARD THROUGH THE WEEKEND INTO
EARLY NEXT WEEK, RESULTING IN CONTINUED MONSOONAL MOISTURE
TRANSPORT THROUGH THIS PERIOD THAT WILL BRING CONTINUED CHANCES
FOR AFTERNOON SHOWERS AND THUNDERSTORMS CAPABLE OF PRODUCING FLASH
FLOODING EACH DAY.
IN ADDITION TO A RETURN TO WETTER CONDITIONS, THIS PATTERN
WILL BRING AN INCREASE IN TEMPERATURES ESPECIALLY ACROSS NORTHERN
UTAH FRIDAY INTO THE WEEKEND. DAYTIME HIGHS SOAR BACK TO THE
CENTURY MARK FOR MANY LOCATIONS ACROSS THE WASATCH FRONT, WITH
OVERNIGHT LOWS IN THE MID TO UPPER 70S OFFERING VERY LITTLE
RELIEF. AS SUCH, WIDESPREAD MAJOR HEATRISK EMERGES THROUGH THIS
PERIOD, INDICATING AN ELEVATED THREAT FOR HEAT ILLNESS ESPECIALLY
FOR THOSE WITHOUT ADEQUATE COOLING AND HYDRATION. IF OUTDOORS FOR
FESTIVITIES THIS WEEKEND, MAKE SURE TO STAY HYDRATED AND TAKE
BREAKS IN THE SHADE OR AIR CONDITIONING OFTEN.
AVIATION, ISSUED 1238 AM MDT THU JUL 23 2026
KSLC...SOUTHEASTERLY WINDS WILL CONTINUE THROUGH THE OVERNIGHT
HOURS, TRANSITIONING TO NORTHWESTERLY BETWEEN 17-19Z. VFR CONDITIONS
WILL PREVAIL WITH LARGELY QUIESCENT CONDITIONS, THOUGH THERE IS A
LOW (15% CHANCE) OF SHOWERS DEVELOPING IN THE VICINITY THIS
AFTERNOON BETWEEN 19-23Z.
REST OF UTAH AND SOUTHWEST WYOMING...WINDS OVERNIGHT WILL BE LARGELY
LIGHT AND TERRAIN-DRIVEN. A FEW SHOWERS IN SOUTHWEST UTAH WEST OF I-
15 ARE SLOWLY WEAKENING AND ALTHOUGH MAY REACH KCDC (20% CHANCE)
BEFORE 09Z, THEY ARE UNLIKELY TO BE IMPACTFUL. ISOLATED TO SCATTERED
SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP AFTER 18Z, BUT
WILL BE MUCH LOWER COVERAGE THAN YESTERDAY, LIMITED TO TWO MAIN
AREAS: SOUTH OF I-70 AND A PORTION OF NORTHEASTERN UTAH LARGELY EAST
OF KHCR AND ALONG AND NORTH OF KPUC.
FIRE WEATHER
COVERAGE OF SHOWERS AND THUNDERSTORMS WILL BE LOWER
TODAY, PRIMARILY LIMITED TO THE SOUTHERN THIRD AND EASTERN THIRD
OF UTAH AND FIRST FORMING OVER HIGHER TERRAIN IN THE EARLY
AFTERNOON. STORMS WILL BE CAPABLE OF PRODUCING GUSTY AND ERRATIC
WINDS UP TO 40 MPH TODAY AND 50 MPH ON FRIDAY, IN ADDITION TO
MODERATE-HEAVY RAIN AND LIGHTNING. DESPITE DRYING ACROSS THE NORTH
TODAY, MOISTURE WILL RETURN FRIDAY, RESULTING IN WIDELY SCATTERED
SHOWERS AND THUNDERSTORMS ACROSS THE ENTIRE STATE FRIDAY-SUNDAY
AFTERNOONS AT LEAST. RH WILL BE A BIT DRIER THAN PRIOR DAYS,
BECOMING NEAR-CRITICAL DURING THE AFTERNOON ACROSS MANY VALLEYS,
WITH MARGINAL OVERNIGHT RECOVERIES (35-50% FOR THOSE SAME
VALLEYS).
SLC WATCHES/WARNINGS/ADVISORIES
UT...NONE.
WY...NONE.
PUBLIC...WHITLAM
AVIATION...CUNNINGHAM
FIRE WEATHER...CUNNINGHAM
FOR MORE INFORMATION FROM NOAA'S NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY
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