Flash Flood Warning 23, NWS Salt Lake City, UT

935 
WGUS75 KSLC 150040
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
640 PM MDT THU AUG 14 2014

UTC017-150145-
/O.CON.KSLC.FF.W.0023.000000T0000Z-140815T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GARFIELD UT-
640 PM MDT THU AUG 14 2014

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 745 PM MDT FOR
SOUTH CENTRAL GARFIELD COUNTY...

ALTHOUGH HEAVY RAINFALL HAS ENDED ACROSS SOUTH CENTRAL GARFIELD 
COUNTY...EXCESSIVE RUNOFF FROM EARLIER HEAVY RAIN IS LIKELY 
RESULTING IN FLASH FLOODING THROUGH WOLVERINE CANYON...HORSE   
CANYON...LITTLE DEATH HOLLOW AND SILVER FALLS CREEK CANYON IN THE 
EASTERN PORTIONS OF THE GRAND STAIRCASE ESCALANTE NATIONAL MONUMENT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

&&

LAT...LON 3781 11107 3767 11098 3763 11117 3767 11122
      3773 11129

$$

MPS

207 
WGUS75 KSLC 150145
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
745 PM MDT THU AUG 14 2014

UTC017-150155-
/O.EXP.KSLC.FF.W.0023.000000T0000Z-140815T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GARFIELD UT-
745 PM MDT THU AUG 14 2014

...THE FLASH FLOOD WARNING FOR SOUTH CENTRAL GARFIELD COUNTY HAS
EXPIRED...

HEAVY RAINFALL HAS ENDED AND FLOOD WATERS HAVE RECEDED...AND ARE NO 
LONGER EXPECTED TO POSE A THREAT TO LIFE OR PROPERTY. PLEASE 
CONTINUE TO HEED ANY ROAD CLOSURES.

LAT...LON 3781 11107 3767 11098 3763 11117 3767 11122
      3773 11129

$$

MPS

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
324 PM MDT THU AUG 14 2014

.SYNOPSIS...THE AIRMASS ACROSS THE REGION WILL DRY FROM THE WEST
BEGINNING THIS EVENING. HIGH PRESSURE WILL BUILD LATE IN THE
WEEKEND THROUGH EARLY NEXT WEEK.

&&

.DISCUSSION...CONVECTION HAS DEVELOP ACROSS THE FORECAST AREA WITH
THE GREATEST COVERAGE OVER EASTERN UTAH. JUDGING FROM THE GOES PW
SOUNDER...PWS HAVE REBOUNDED ACROSS THE STATE...WITH AROUND AN
INCH OBSERVED ACROSS MOST OF THE STATE. SURFACE DEWPOINTS ARE
STILL IN THE 50S TO 60S ACROSS MOST LOCATIONS. THE SPC MESOSCALE
ANALYSIS SHOWS MUCAPE AROUND 2000 J/KG ACROSS SOUTHEAST UTAH...AND
POCKETS OF 1000 J/KG ACROSS CENTRAL UTAH. SO...WITH PLENTY OF
SUNSHINE...EXPECT THAT STORMS WILL CONTINUE TO DEVELOP INTO THIS
EVENING...WITH THE GREATEST COVERAGE ACROSS EASTERN UTAH WHERE THE
MOISTURE IS DEEPEST. EXPECT THAT THE MAIN THREAT WITH THESE STORMS
WILL BE HEAVY RAIN.

DRY AIR OVER NEVADA WILL MOVE EASTWARD INTO THE STATE OVERNIGHT.
ISOLATED CONVECTION IS EXPECTED TO DEVELOP ACROSS EASTERN UTAH
TOMORROW AFTERNOON...THOUGH IF MOISTURE IS SLOWER TO EXIT THE AREA
THAN ADVERTISED BY THE MODELS...CONVECTION TOMORROW AFTERNOON
COULD BE MORE WIDESPREAD THAN WHAT IS CURRENTLY IN THE FORECAST.

A WARMING...DRYING TREND WILL CONTINUE INTO THIS WEEKEND AS
HEIGHTSRISE. WITH STABILIZING CONDITIONS...WEATHER WILL BE QUIET
THIS WEEKEND. THOUGH THERE IS DISAGREEMENT ABOUT TIMING AND
INTENSITY...BOTH THE GFS AND THE EC SHOW A COLD UPPER LOW MOVING
INTO THE PACIFIC NORTHWEST LATER NEXT WEEK.

&&

.AVIATION...THE SLC TERMINAL WILL SEE VFR CONDITIONS THROUGH THE
EVENING WITH SOME SCATTERED CLOUDS. LAKE BREEZE BOUNDARY APPEARS TO
BE PARKED OVER THE TERMINAL MAKING SLOW FORWARD PROGRESS.
NORTHWESTERLY WINDS ARE EXPECTED TO PREVAIL OVER THE MAJORITY OF THE
TERMINAL THROUGH BETWEEN 00Z AND 02Z...THOUGH SOME LIGHT AND
VARIABLE WINDS CAN BE EXPECTED. THERE IS A 20 PERCENT CHANCE OF SOME
GUSTY AND/OR ERRATIC WINDS THROUGH THE EARLY EVENING DUE TO SHOWERS
IN THE VICINITY OF THE TERMINAL.

&&

.FIRE WEATHER...THE DRYING TREND HAS STARTED OVER WESTERN UTAH
THIS AFTERNOON AND WILL SPREAD ACROSS THE REGION FRIDAY. A DRY
SOUTHWEST TO WEST FLOW WILL PREVAIL THROUGH THE WEEKEND AND WELL
INTO NEXT WEEK. RELATIVE HUMIDITY VALUES WILL LOWER INTO THE LOWER
TEENS AND UPPER SINGLE DIGITS FROM THIS WEEKEND FORWARD SO FUELS
WILL HAVE AN OPPORTUNITY TO DRY OVER THIS PERIOD.

&&

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

PUBLIC...HOSENFELD
FIRE WEATHER...STRUTHWOLF
AVIATION...TRAPHAGAN

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
312 AM MDT THU AUG 14 2014

UTZ001>016-019>021-517-518-WYZ021-151300-
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-
312 AM MDT THU AUG 14 2014

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

.DAY ONE...TODAY AND TONIGHT

SCATTERED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE ACROSS MAINLY
EASTERN UTAH TODAY. SOME OF THIS ACTIVITY WILL BE CAPABLE OF
PRODUCING LOCALLY HEAVY RAINFALL.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

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

ROGOWSKI

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

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

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
219 PM MDT THU AUG 14 2014

UTZ010-011-142045-
WESTERN UINTA BASIN UT-WASATCH PLATEAU/BOOK CLIFFS UT-
219 PM MDT THU AUG 14 2014

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL DUCHESNE COUNTY UNTIL 245
PM MDT...

AT 218 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 7 MILES WEST OF DUCHESNE...MOVING NORTHEAST AT 25
MPH.

NICKEL SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE.

LOCATIONS IMPACTED INCLUDE... DUCHESNE...UPALCO...ARCADIA...MOUNTAIN
HOME...UTAHN...AND STARVATION RESERVOIR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF THREATENING WEATHER APPROACHES...TAKE SHELTER IN A STURDY
BUILDING.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 3998 11048 4019 11072 4045 11041 4019 11011
TIME...MOT...LOC 2018Z 232DEG 20KT 4015 11053

MT