392
FXUS65 KSLC 131138
AFDSLC
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
538 AM MDT MON JUL 13 2026
KEY MESSAGES, ISSUED 1023 PM MDT SUN JUL 12 2026
- AFTER A HISTORICALLY HOT DAY, TEMPERATURES WILL BECOME LESS HOT
TOMORROW, AVERAGING 5-10F ABOVE SEASONAL NORMALS.
- TEMPERATURES WILL GRADUALLY BECOME LESS HOT THROUGH THE WEEK AS
MONSOONAL MOISTURE MOVES INTO THE AREA. THIS WILL INCREASE THE
THREAT OF PRECIPITATION AND THUS FLASH FLOODING, PARTICULARLY
OVER SOUTHERN UTAH, THROUGHOUT THE WEEK.
DISCUSSION, ISSUED 1023 PM MDT SUN JUL 12 2026
A STRONG RIDGE IS CENTERED OVER THE DAKOTAS THIS
EVENING, PUTTING UTAH AND SOUTHWEST WYOMING UNDER A RATHER HOT
SOUTHERLY FLOW ALOFT. THE PRESENCE OF THIS RIDGE RESULTED IN
HISTORICALLY HOT TEMPERATURES FOR NORTHERN UTAH AND SOUTHWEST
WYOMING TODAY, WITH SALT LAKE CITY SETTING A NEW ALL-TIME RECORD
HIGH AT 109F. OTHER LOCATIONS SUCH AS A LOGAN, PARK CITY, AND
DUCHESNE AT LEAST GOT CLOSE TO SETTING MONTHLY AND ALL-TIME
RECORDS AS WELL, BUT WILL NEED TO WAIT FOR MORNING REPORTS TO COME
IN TO CONFIRM. THE 00Z SOUNDING ALSO SHOWED THE HOTTEST 700MB
TEMPERATURE FOR SLC ON RECORD WITH A VALUE OF 21.0C.
THE SOUTHERLY FLOW HAS ALREADY STARTED TO DRAW MOISTURE INTO
SOUTHERN UTAH, WITH SATELLITE DERIVED PWS SHOWING VALUES UP TO 0.8
INCH. THIS MOISTURE ALLOWED FOR THE DEVELOPED OF STRONG TO SEVERE
SHOWERS AND THUNDERSTORMS OVER SOUTHWEST UTAH, ONE OF WHICH
BROUGHT SEVERE GUSTS TO CEDAR CITY AIRPORT AND ANOTHER ONE WHICH
KNOCKED A LARGE TREE BRANCH ONTO A ROAD IN ZION NATIONAL PARK. THE
MONSOONAL MOISTURE WILL CONTINUE TO INCREASE AND SPREAD NORTHWARD
THROUGH TUESDAY, WITH GUIDANCE INDICATING WIDESPREAD PW VALUES IN
THE 0.8 TO 1.2 INCH RANGE ACROSS ALL BUT NORTHEASTERN PORTIONS OF
THE AREA BY TUESDAY AFTERNOON. THIS MOISTURE COMBINED WITH DAYTIME
HEATING AND SOME EMBEDDED SHORTWAVE ENERGY WILL BRING INCREASING
COVERAGE OF SHOWERS AND THUNDERSTORMS, PRIMARILY OVER THE HIGHER
TERRAIN. BEST COVERAGE WILL BE OVER SOUTHERN UTAH, PARTICULARLY
TOMORROW, THOUGH THERE WILL BE AT LEAST SOME POSSIBILITY OF
SHOWERS ACROSS THE AREA BY MIDWEEK.
FOR THE MIDDLE TO LATTER PART OF THE WEEK, GUIDANCE INDICATES THAT
THE FLOW ALOFT WILL MOST LIKELY BECOME GENERALLY LIGHT AND
VARIABLE DUE TO THE INFLUENCE OF THE REBUILDING BROAD RIDGE. THIS
WILL LIMIT THE ADVECTION OF ADDITIONAL MOISTURE INTO THE AREA, BUT
WILL ALLOW THE EXISTING MOISTURE TO REMAIN IN PLACE FOR THE
REMAINDER OF THE WEEK INTO EARLY NEXT WEEK. THUS, THE THREAT OF
PRECIPITATION WILL CONTINUE, CONTINUING TO DECREASE THE POTENTIAL
FOR WILDFIRES BUT KEEPING THE POTENTIAL FOR FLASH FLOODING
HEIGHTENED.
AVIATION
KSLC...VFR CONDITIONS ARE EXPECTED THROUGHOUT THE TAF PERIOD.
SOUTHEASTERLY DRAINAGE WINDS WILL TRANSITION TO NORTHWESTERLY DURING
THE 18-19Z TIMEFRAME, BEFORE RETURNING TO SOUTHEAST AROUND 03Z.
THERE IS A 20% CHANCE OUTFLOW WINDS GUSTING TO 25 KTS PUSH INTO THE
TERMINAL FROM THE SOUTH DURING THE 00-03Z TIMEFRAME.
REST OF UTAH AND SOUTHWEST WYOMING...SCATTERED AFTERNOON SHOWERS AND
THUNDERSTORMS WILL DEVELOP ACROSS AREAS SOUTH OF I-80 THIS
AFTERNOON, ACCOMPANIED BY GUSTY OUTFLOW WINDS AND LIGHTNING. ASIDE
FROM THIS, WINDS WILL LARGELY FOLLOW A TYPICALLY DIURNAL PATTERN AT
AREA TERMINALS. CONDITIONS EXPECTED TO REMAIN VFR THROUGH THE PERIOD,
THOUGH ANY STRONGER STORM DIRECTLY ATOP A TERMINAL MAY RESULT IN
BRIEF REDUCTIONS TO CIGS/VIS.
FIRE WEATHER, ISSUED 518 AM MDT MON JUL 13 2026
HOT AND DRY CONDITIONS WILL PERSIST THROUGH
MUCH OF THE DAY ACROSS NORTHERN AND CENTRAL UTAH, WHERE AN
EXCESSIVE HEAT WARNING REMAINS IN EFFECT FOR LOWER
ELEVATIONS. MONSOON MOISTURE WHICH SPREAD INTO SOUTHERN
UTAH SUNDAY EVENING WILL CONTINUE TO SPREAD ACROSS SOUTHERN
AND CENTRAL UTAH THROUGH THE DAY, REACHING NORTHERN UTAH
LATER THIS AFTERNOON. AS THIS MOISTURE INCREASES, A MIXTURE
OF WET AND DRY THUNDERSTORMS CAN BE EXPECTED ACROSS CENTRAL
AND SOUTHERN UTAH, WHILE THUNDERSTORM COVERAGE ACROSS THE
NORTH REMAINS ISOLATED. STRONG OUTFLOW WINDS WILL BE
POSSIBLE WITH THESE STORMS, PARTICULARLY ACROSS NORTHERN
AND CENTRAL UTAH. WITH THE INCREASE IN MOISTURE, RH VALUES
WILL TREND HIGHER TODAY, ALTHOUGH VALUES WILL AGAIN FALL
BELOW 15 PERCENT ACROSS NORTHERN AND EASTERN VALLEYS. THIS
MOISTURE WILL CONTINUE TO INCREASE THROUGH MIDWEEK RESULTING
IN SHOWERS AND THUNDERSTORMS CAPABLE OF WETTING RAINS ACROSS
THE STATE, ALONG WITH ELEVATED DAYTIME RH AND IMPROVED
OVERNIGHT RECOVERY.
SLC WATCHES/WARNINGS/ADVISORIES
UT...EXTREME HEAT WARNING UNTIL 6 AM MDT TUESDAY FOR UTZ101>108-114-
116-118>121.
EXTREME HEAT WARNING UNTIL 6 AM MDT EARLY THIS MORNING FOR
UTZ115-122-128>131.
WY...EXTREME HEAT WARNING UNTIL 9 PM MDT THIS EVENING FOR WYZ021.
PUBLIC...TRAPHAGAN
AVIATION...SEAMAN
FIRE WEATHER...SEAMAN
FOR MORE INFORMATION FROM NOAA'S NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY
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