Flash Flood Warning 123, NWS Salt Lake City, UT

822 
WGUS75 KSLC 221845
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1245 PM MDT SUN SEP 22 2013

UTC017-025-037-055-221945-
/O.CON.KSLC.FF.W.0123.000000T0000Z-130922T1945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN JUAN UT-KANE UT-GARFIELD UT-WAYNE UT-
1245 PM MDT SUN SEP 22 2013

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 145 PM MDT FOR
CENTRAL WAYNE...CENTRAL GARFIELD...EASTERN KANE AND SOUTHWESTERN SAN
JUAN COUNTIES...

AT 1236 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATES 
THAT THE THUNDERSTORMS PRODUCING THE HEAVY RAIN HAVE MOVED NORTH 
OUT OF THE WARNED AREA. RUNOFF FROM THE EARLIER HEAVY RAINFALL WILL
LIKELY REMAIN HEAVY THROUGH DRY WASHES...SLOT CANYONS...AND AREA
CREEKS THROUGH 145 PM MDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...SLOT CANYONS...AND UNIMPROVED ROADS IN THE AREA.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM MDT SUNDAY
EVENING FOR CENTRAL UTAH.

&&

LAT...LON 3849 11161 3848 11074 3752 11067 3701 11127
      3701 11155

$$

CONGER

764 
WGUS75 KSLC 221941
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
141 PM MDT SUN SEP 22 2013

UTC017-025-037-055-221950-
/O.EXP.KSLC.FF.W.0123.000000T0000Z-130922T1945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN JUAN UT-KANE UT-GARFIELD UT-WAYNE UT-
141 PM MDT SUN SEP 22 2013

...THE FLASH FLOOD WARNING WILL EXPIRE AT 145 PM MDT FOR CENTRAL
WAYNE...CENTRAL GARFIELD...EASTERN KANE AND SOUTHWESTERN SAN JUAN
COUNTIES...

RUNOFF FROM EARLIER HEAVY PRECIPITATION HAS LIKELY DIMINISHED ACROSS 
THE WARNED AREA. SMALL CREEKS AND WASHES MAY STILL BE RUNNING 
HIGH...THOUGH ADDITIONAL FLASH FLOODING IS NOT ANTICIPATED AT THIS 
TIME. 

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM MDT SUNDAY
EVENING FOR CENTRAL UTAH.

LAT...LON 3849 11161 3848 11074 3752 11067 3701 11127
      3701 11155

$$

CONGER

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1008 AM MDT SUN SEP 22 2013

.SYNOPSIS...A COLD FRONT WILL CROSS THE REGION AS THE DAY
PROGRESSES. AN UPPER LEVEL RIDGE WILL QUICKLY BUILD OVER THE AREA
EARLY IN THE WORKWEEK...BEFORE ANOTHER STORM SYSTEM IMPACTS THE
GREAT BASIN MIDWEEK.

&&

.DISCUSSION...COLD FRONT SLOWLY PUSHING EAST SOUTHEAST THROUGH
NORTH AND WEST CENTRAL UTAH FROM NEAR SLC TO DELTA AT 930 AM.
FRONT EXPECTED TO BE NEAR MOAB-PAGE AZ LINE BY 6 PM THIS EVENING.
AHEAD OF THIS FRONT THE ATMOSPHERE IS BECOMING INCREASINGLY MOIST
AND WITH STRONG DYNAMICS OF THE UPPER TROUGH BECOMING SOMEWHAT
MORE NEGATIVELY TILTED BY MIDDAY THROUGH THE AFTERNOON THE EASTERN
PORTIONS OF OUR CWA ARE LIKELY TO SEE SOME SEVERE THUNDERSTORM
DEVELOPMENT INCLUDING STRONG WINDS AND LARGE HAIL. THE 400-850
WIND SHEAR IS FORECAST BETWEEN 45 AND 55 KTS THROUGH 00Z THIS
EVENING. THE CELLS ARE MOVING FAST SO THE CHANCE OF FLASH FLOODING
WILL BE SOMEWHAT LESS OF A FACTOR...ALTHOUGH STILL POSSIBLE.

HAVE INCREASE POPS OVER EASTERN PORTIONS OF CWA AS WELL AS THE
CENTRAL AND SOUTHERN WASATCH MOUNTAINS. FARTHER WEST AND NORTH IN
THE CACHE VALLEY THE POPS WERE LOWERED FOR THIS MORNING AND IN
SOME PORTIONS FOR THIS AFTERNOON AS WELL FROM CHANCE TO SLIGHT
CHANCE DUE TO BREAK BETWEEN NECK OF COLD TROUGH STILL OVER WESTERN
NEVADA THIS MORNING AND MOISTURE PLUME DEFLECTED OVER EASTERN
UTAH.

OVER WESTERN UTAH THE COLD 500 MB TROUGH WILL BE OVERHEAD AT
MIDDAY BUT THEN THIS AFTERNOON THE 500 MB TEMPERATURES BEGIN TO
WARM ALONG WITH DECENT SUBSIDENCE BEHIND THIS TROUGH. CURRENT
THOUGHTS ARE THAT ANY SHOWER ACTIVITY WILL BE DURING THE MIDDAY
HOURS AND THEN END BY MID AFTERNOON. HRRR FORECAST SOME SHOWERS
INTO THE MID AFTERNOON OVER WEST CENTRAL PORTIONS BUT THE OTHER
MODELS ARE NOT SO NOT AS EXCITED. LEFT A SLIGHT CHANCE IN BUT NOT
VERY CONFIDENT ANYTHING WILL HAPPEN.

TEMPERATURES WILL BE SOMEWHAT DIFFICULT TODAY DUE TO THE AMOUNT OF
CLOUD COVER AND TIMING OF COLD FRONT. HAVE RAISED TEMPS A LITTLE
IN SOUTHWEST UTAH BY A FEW DEGREES AS THEY WERE CURRENTLY NEAR
FORECAST HIGHS ALREADY WITH THE COLD FRONT A FEW HOURS AWAY.

&&

.AVIATION...NORTH WINDS HAVE FILTERED INTO THE SLC TERMINAL AND
SHOULD REMAIN NORTHWEST THROUGH THE DAY. THE EXCEPTION WOULD BE THE
POSSIBILITY OF SOME SHOWER INDUCED OUTFLOWS THIS MORNING FROM THE
SOUTHEAST. THERE IS A 30 PERCENT CHANCE OF A PERIOD OF CEILINGS
BELOW 7000 FEET AGL BETWEEN 19 AND 22Z.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...
UT...NONE.
WY...NONE.
&&

PUBLIC...STRUTHWOLF
AVIATION...STRUTHWOLF

FOR MORE INFORMATION FROM NOAA/S NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)

FOR FREQUENTLY ASKED QUESTIONS ABOUT THE AREA FORECAST DISCUSSION
VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY/GENERAL/AFD_FAQS.PHP (ALL LOWER CASE)

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
449 AM MDT SUN SEP 22 2013

UTZ001>016-019>021-517-518-WYZ021-231100-
CACHE VALLEY/UTAH PORTION-NORTHERN WASATCH FRONT-
SALT LAKE AND TOOELE VALLEYS-SOUTHERN WASATCH FRONT-
GREAT SALT LAKE DESERT AND MOUNTAINS-WASATCH MOUNTAIN VALLEYS-
WASATCH MOUNTAINS I-80 NORTH-WASATCH MOUNTAINS SOUTH OF I-80-
WESTERN UINTA MOUNTAINS-WASATCH PLATEAU/BOOK CLIFFS-
WESTERN UINTA BASIN-CASTLE COUNTRY-SAN RAFAEL SWELL-
SANPETE/SEVIER VALLEYS-WEST CENTRAL UTAH-SOUTHWEST UTAH-
UTAHS DIXIE AND ZION NATIONAL PARK-SOUTH CENTRAL UTAH-
GLEN CANYON RECREATION AREA/LAKE POWELL-CENTRAL MOUNTAINS-
SOUTHERN MOUNTAINS-SOUTHWEST WYOMING-
449 AM MDT SUN SEP 22 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN TWO THIRDS OF
UTAH AND SOUTHWEST WYOMING.

.DAY ONE...TODAY AND TONIGHT

SHOWERS AND THUNDERSTORMS WILL BE SCATTERED ABOUT THE REGION
TODAY. THEY WILL CONCENTRATED OVER THE EAST CENTRAL AND SOUTHEAST
SECTIONS OF UTAH...WHERE THERE IS A POTENTIAL FOR STRONG THUNDERSTORMS
WITH GUSTY WINDS AND HAIL DURING THE AFTERNOON.  AN ISOLATED FLASH
FLOOD EVENT WILL BE POSSIBLE AS WELL.

ASIDE FROM THE THUNDERSTORM ACTIVITY...GUSTY SOUTHERLY WINDS CAN
BE EXPECTED AHEAD OF A COLD FRONT CROSSING THE REGION.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

ANOTHER STORM SYSTEM WILL IMPACT THE FORECAST AREA DURING THE
SECOND HALF OF THE WORKWEEK...BRINGING PRECIPITATION TO ALL BUT
FAR SOUTHERN UTAH. FROM LATE WEDNESDAY NIGHT INTO FRIDAY...SNOW
WILL BE POSSIBLE IN THE MOUNTAINS...WITH SNOW LEVELS LOWERING TO
8000 FEET...OR A LITTLE LOWER.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

BARJENBRUCH

FOR MORE INFORMATION FROM NOAA/S NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)

FOR INFORMATION ON POTENTIAL TRAVEL IMPACTS VISIT...
HTTP://WWW.UDOTTRAFFIC.UTAH.GOV/ROADWEATHERFORECAST.ASPX