885
FXUS65 KSLC 082343
AFDSLC
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
542 PM MDT SAT AUG 8 2026
KEY MESSAGES, ISSUED 102 PM MDT SAT AUG 8 2026
- DANGEROUS HEAT WILL PERSIST ACROSS MOST OF UTAH TODAY AND ACROSS
THE NORTH ON SUNDAY. THOSE WITHOUT ACCESS TO COOLING OR PROPER
HYDRATION WILL BE MOST AT RISK FOR HEAT-RELATED ILLNESS. WITH
TEMPERATURES REMAINING ELEVATED OVERNIGHT, THERE WILL BE LITTLE
RECOVERY. HEAT STRESS IS CUMULATIVE.
- A MARGINAL RISK OF EXCESSIVE RAINFALL REMAINS OUTLOOKED ACROSS
SOUTHERN UTAH TODAY, SHIFTING NORTH AND EAST FOR SUNDAY AND
MONDAY. PERIODS OF HEAVY RAINFALL WILL POSE A FLASH FLOODING
THREAT, PARTICULARLY TO RAIN SENSITIVE BASINS.
- A MONSOONAL PATTERN LOOKS TO PERSIST INTO THE UPCOMING WEEK,
OFFERING DAILY SHOWER AND THUNDERSTORM CHANCES, AND POTENTIAL
FOR LOCALIZED EXCESSIVE RAINFALL.
DISCUSSION, ISSUED 102 PM MDT SAT AUG 8 2026
HIGH PRESSURE CENTERED NEAR THE FOUR CORNERS REGION
THROUGH THE EARLY PART OF NEXT WEEK WILL ALLOW MONSOONAL MOISTURE
TO CONTINUE TO SPREAD INTO THE FORECAST AREA. THE LATEST PWAT
ANALYSIS SHOWS AROUND 1 INCH ACROSS FAR SOUTHWEST UTAH, DECREASING
NORTH AND EAST TO AROUND 0.5 INCHES ACROSS FAR NORTHEAST UTAH AND
SOUTHWEST WYOMING. HOWEVER, MODEL TRENDS SHOW PWATS TO GRADUALLY
INCREASE THROUGH THE DAY, WITH WEST-CENTRAL UTAH SEEING PWATS
CLOSER TO 0.9 INCHES BY 00Z (THOUGH EASTERN UTAH REMAINS MUCH
DRIER AT AROUND 0.6-0.7 INCHES).
ISOLATED TO SCATTERED CONVECTION CAN BE EXPECTED THIS AFTERNOON
AND EVENING, MOSTLY ALONG/NEAR THE SPINE OF UTAH AND ACROSS
SOUTHWEST THROUGH WEST-CENTRAL UTAH. POCKETS OF MODERATE RAINFALL
WERE NOTED ACROSS SOUTHWEST UTAH THE PAST COUPLE OF DAYS, SO CAN
EXPECT LOCALLY MODERATE TO HEAVY RAIN TO DEVELOP TODAY ACROSS
PORTIONS OF SOUTHERN UTAH. FARTHER NORTH, DRIER LOW LEVELS WILL
LIMIT PRECIPITATION RATES/AMOUNTS TODAY AND ALLOWING FOR MORE OF
A WIND THREAT ACROSS PORTIONS OF CENTRAL UTAH.
TOMORROW, WITH PWATS CLOSER TO 0.9-1.0 INCHES REACHING NORTHERN
AND PORTIONS OF EASTERN UTAH, MORE WIDESPREAD AND INCREASINGLY WET
SHOWERS AND THUNDERSTORMS CAN BE EXPECTED. DIURNAL SCATTERED TO
NUMEROUS CONVECTION CAN THEN BE EXPECTED THROUGH THE COMING WEEK
WITH MOISTURE REMAINING IN PLACE. WITH THIS INCREASE, THE THREAT
OF HEAVY RAIN AND FLASH FLOODING WILL INCREASE. FOR TODAY, THERE
IS A MARGINAL RISK OF EXCESSIVE RAINFALL IN SOUTHWEST UTAH. THIS
RISK SPREADS NORTH AND EAST FOR TOMORROW AND MONDAY.
TEMPERATURES TODAY WILL REMAIN QUITE HOT, WITH MANY VALLEYS SEEING
HIGH TEMPERATURES NEAR TO ABOVE 100 DEGREES. HOWEVER, THE
INCREASE IN MOISTURE WILL AID COOLER TEMPERATURES GOING FORWARD.
MANY VALLEYS ARE FORECAST TO SEE HIGHS ONLY IN THE 80S FOR THE
LATTER PART OF NEXT WEEK. BY THURSDAY, THE NBM ONLY HAS A 32%
CHANCE OF SLC REACHING 90 DEGREES, AND THAT CHANCE ONLY DECREASES
INTO NEXT WEEKEND.
AVIATION
KSLC...VFR CONDITIONS WILL PERSIST THROUGH THE PERIOD. NORTHERLY
WINDS WILL TRANSITION TO A LIGHT SOUTHERLY DRAINAGE WIND BETWEEN 02-
04Z.
REST OF UTAH AND SOUTHWEST WYOMING...MOSTLY VFR CONDITIONS WILL
CONTINUE FOR THE ENTIRE AIRSPACE THROUGH THE PERIOD. SHOWERS AND
THUNDERSTORMS ACROSS SOUTHWESTERN UTAH WILL BRING CEILINGS AROUND
6000-8000 FT AGL, REDUCED VISIBILITY AND GUSTY AND ERRATIC MICROBURST
WINDS UP TO 55 MPH THROUGH AROUND 02Z. LOCALLY REDUCED VISIBILITY IN
SMOKE WILL OCCUR NEAR SEVERAL LARGE WILDFIRES INCLUDING NEAR
RICHFIELD, NEAR CEDAR CITY, NEAR MORGAN, AND BETWEEN EPHRAIM AND
HUNTINGTON.
FIRE WEATHER, ISSUED 152 PM MDT SAT AUG 8 2026
WITH HIGH PRESSURE CENTERED NEAR THE FOUR CORNERS
AREA, MONSOONAL MOISTURE WILL CONTINUE TO INCREASE OVER THE AREA,
SPREADING NORTH AND EAST TONIGHT BEFORE LINGERING IN PLACE
THROUGH THE COMING WEEK. THIS WILL LEAD TO DIURNAL SHOWERS AND
THUNDERSTORMS ACROSS THE AREA. SHOWERS AND THUNDERSTORMS WILL
BECOME MORE WIDESPREAD ACROSS THE AREA TOMORROW. STORMS ACROSS
SOUTHERN UTAH WILL CONTINUE TO BECOME INCREASINGLY WET TOMORROW,
WHILE ACROSS THE NORTH, SOME STORMS NEAR THE NORTHERN/EASTERN EDGE
OF THE MOISTURE SURGE MAY INITIALLY BEGIN ON THE DRIER SIDE
TOMORROW. AS HUMIDITIES INCREASE, WETTING RAIN POTENTIAL WILL
INCREASE AREAWIDE THROUGH THE COMING WEEK. GUSTY OUTFLOW WINDS IN
EXCESS OF 45 MPH WILL REMAIN POSSIBLE WITH SHOWERS AND
THUNDERSTORMS THROUGH AT LEAST TOMORROW. OUTSIDE OF SHOWERS AND
THUNDERSTORMS, WINDS ARE EXPECTED TO REMAIN RELATIVELY LIGHT AND
TERRAIN-DRIVEN.
SLC WATCHES/WARNINGS/ADVISORIES
UT...EXTREME HEAT WARNING UNTIL MIDNIGHT MDT SUNDAY NIGHT FOR UTZ101-
102-104-105-115-120-121.
HEAT ADVISORY UNTIL MIDNIGHT MDT SUNDAY NIGHT FOR UTZ103-106-107-
114-116.
HEAT ADVISORY UNTIL 9 PM MDT THIS EVENING FOR UTZ118-119-122-126-
127.
EXTREME HEAT WARNING UNTIL 9 PM MDT THIS EVENING FOR UTZ123-124-
128>131.
WY...NONE.
PUBLIC...CHENG
AVIATION...KRUSE
FIRE WEATHER...CHENG
FOR MORE INFORMATION FROM NOAA'S NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY
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