841
FXUS65 KSLC 160429
AFDSLC
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1029 PM MDT THU OCT 15 2026
KEY MESSAGES
- ANOTHER NIGHT OF FREEZING TEMPERATURES WILL IMPACT THE SANPETE
AND SEVIER VALLEYS AS WELL AS EASTERN JUAB AND MILLARD COUNTIES
TONIGHT.
- A FEW THUNDERSTORMS WILL BE POSSIBLE SUNDAY AFTERNOON AND
EVENING AND AGAIN MONDAY AFTERNOON AND EVENING.
- MORE WIDESPREAD PRECIPITATION WILL OCCUR TUESDAY THROUGH AT
LEAST THE EARLY PART OF THE WEEKEND, WITH ANOTHER 0.50-1.50
INCHES FOR MOST LOCATIONS, LOCALLY UP TO 2 INCHES (OR EVEN MORE)
FOR AREAS THAT DO WELL IN SOUTHERLY FLOW.
DISCUSSION
A WARMING TREND WILL CONTINUE AS HIGH PRESSURE
REMAINS OVERHEAD THROUGH THE FIRST PART OF THE WEEKEND. A CUT OFF
UPPER LEVEL LOW CURRENTLY OVER SOUTHERN CALIFORNIA WILL CONTINUE
TO RETROGRADE WESTWARD. MEANWHILE, THE CONTINUED VERY ACTIVE
EASTERN PACIFIC WILL HAVE AT LEAST TWO ONGOING TROPICAL CYCLONES
(SIMON AND TRUDY). AS THE UPPER LEVEL LOW CONTINUES TO SHIFT
WESTWARD, TROPICAL MOISTURE FROM WEAKENING TROPICAL STORM SIMON
WILL BE DRAWN NORTHWARD INTO BAJA CALIFORNIA AND EVENTUALLY THE
DESERT SOUTHWEST SUNDAY.
THIS UPPER LEVEL LOW WILL EJECT ACROSS THE DESERT SOUTHWEST AHEAD
OF THE NEXT PACIFIC TROUGH SUNDAY. PW ANOMALIES FROM THIS
MOISTURE ADVECTION AHEAD OF THE LOW WILL REACH NEAR 90-95TH
PERCENTILE ACROSS SOUTHERN UTAH. WHILE IT IS MID-OCTOBER,
IF SUFFICIENT DESTABILIZATION OCCURS, A FEW THUNDERSTORMS CAPABLE
OF HEAVY RAIN WILL DEVELOP SUNDAY AFTERNOON AND EVENING ACROSS
SOUTHERN UTAH. THIS THREAT WILL CONTINUE MONDAY AFTERNOON AND
EVENING.
THE PREVIOUSLY MENTIONED UPPER LEVEL TROUGH WILL BE OFF THE
CENTRAL CALIFORNIA COAST BY TUESDAY MORNING. BROAD UPPER LEVEL
DIVERGENCE AHEAD OF THIS UPPER LEVEL TROUGH COMBINED WITH PVA
WILL SUPPORT THE DEVELOP OF WIDESPREAD PRECIPITATION ACROSS
CENTRAL AND SOUTHERN UTAH BY TUESDAY AFTERNOON. AS THIS TROUGH
SLOWLY CROSSES THE WEST, ADDITIONAL PERIODS OF VALLEY RAIN AND
HIGH ELEVATION SNOW WILL CONTINUE THROUGH AT LEAST THE EARLY
WEEKEND PERIOD. RAINFALL TOTALS (25TH TO 75TH PERCENTILE) ARE
AVERAGING AROUND 0.50 TO 1.50 INCHES ACROSS MOST LOCATIONS, WITH
SOME AREAS THAT DO WELL IN SOUTHERLY FLOW (NORTHERN WASATCH FRONT,
PROVO CANYON, SOUTHERN MOUNTAINS) LIKELY SEEING MORE THAN 2
INCHES. AS FAR AS SNOW, WHILE IT'S OVER SEVERAL DAYS, LOOKING LIKE
ANOTHER 6 TO 12 INCHES, MAINLY ABOVE 9000-9500 FEET.
GOING FREEZE WARNINGS ARE ON TRACK AND NO CHANGES WILL BE MADE. NO
ADDITIONAL HEADLINES ARE NEEDED AT THIS JUNCTURE.
AVIATION
KSLC...VFR CONDITIONS PREVAIL AT THE TERMINAL UNDER MOSTLY CLEAR
SKIES. LIGHT SOUTHEASTERLY WINDS CONTINUE OVERNIGHT, TRANSITIONING
TO THE NORTHWEST AFTER ROUGHLY 19Z.
REST OF UTAH AND SOUTHWEST WYOMING...VFR CONDITIONS WILL PREVAIL
THROUGH THE TAF PERIOD FOR ALL REGIONAL TERMINALS. WINDS REMAIN
GENERALLY LIGHT AND DIURNALLY DRIVEN FOR NORTHERN UTAH TERMINALS
INTO FRIDAY. ACROSS SOUTHERN UTAH AND SOUTHWEST WYOMING, WHILE
LIGHTER WINDS ARE EXPECTED OVERNIGHT, GUSTY NORTHERLY TO EASTERLY
WINDS REDEVELOP FRIDAY AFTERNOON.
SLC WATCHES/WARNINGS/ADVISORIES
UT...FREEZE WARNING UNTIL 9 AM MDT FRIDAY FOR UTZ116-118-119.
WY...NONE.
KRUSE/WHITLAM
FOR MORE INFORMATION FROM NOAA'S NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY
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