Flash Flood Warning 45, NWS Salt Lake City, UT

890 
WGUS75 KSLC 020132
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
732 PM MDT THU AUG 1 2013

UTC015-041-055-020230-
/O.CON.KSLC.FF.W.0045.000000T0000Z-130802T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WAYNE UT-SEVIER UT-EMERY UT-
732 PM MDT THU AUG 1 2013

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 830 PM MDT FOR
SOUTHWESTERN EMERY...SOUTHEASTERN SEVIER AND NORTH CENTRAL WAYNE
COUNTIES...

AT 718 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE FLASH FLOODING OVER THE CATHEDRAL VALLEY AREA OF CAPITOL 
REEF NATIONAL PARK AND ADJACENT AREAS. 

RAINFALL AMOUNTS OVER THIS EXTREMELY FLASH FLOOD PRONE BASIN HAS NOW 
REACHED 1.25 INCHES IN A EXTENSIVE AREA.  AS SUCH...MAJOR FLASH 
FLOODING IS NOW ANTICIPATED TO AFFECT MANY DRAINAGES IN THE NORTHERN 
PART OF THE PARK.

AS THIS WATERSHED FLOWS SOUTHEAST TOWARD THE FREMONT RIVER NEAR 
CAINEVILLE...IT IS ANTICIPATED THE RIVER WILL FLOW AT DANGEROUS 
LEVELS THROUGH THE TOWN OF CAINEVILLE INTO THE NIGHTTIME HOURS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.

&&

LAT...LON 3859 11148 3865 11126 3853 11107 3847 11100
      3840 11098 3827 11106 3836 11148

$$

MCINERNEY

804 
WGUS75 KSLC 020230
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
830 PM MDT THU AUG 1 2013

UTC015-041-055-020234-
/O.EXP.KSLC.FF.W.0045.000000T0000Z-130802T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WAYNE UT-SEVIER UT-EMERY UT-
830 PM MDT THU AUG 1 2013

...THE FLASH FLOOD WARNING WILL EXPIRE AT 830 PM MDT FOR SOUTHWESTERN
EMERY...SOUTHEASTERN SEVIER AND NORTH CENTRAL WAYNE COUNTIES...

THE WIDESPREAD HEAVY RAINFALL FROM EARLIER THIS EVENING IN AND 
AROUND THE NORTHERN PORTION OF CAPITOL REEF NATIONAL PARK HAS ENDED. 
NUMEROUS DRAINAGES ACROSS THE NORTHERN PORTION OF THE PARK...ALONG 
WITH AREAS JUST TO THE EAST OF THE PARK...WILL EXPERIENCE HEAVY 
RUNOFF THROUGH THE BALANCE OF THE EVENING. 

THIS RUNOFF WILL EVENTUALLY END UP IN THE FREMONT RIVER. HIGH FLOWS 
ARE EXPECTED ALONG THE RIVER FROM THE PARK EAST THROUGH THE 
HANKSVILLE AREA. THE RIVER SHOULD RUN HIGH AND FAST OVERNIGHT. 

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.

LAT...LON 3859 11148 3865 11126 3853 11107 3847 11100
      3840 11098 3827 11106 3836 11148

$$

CONGER

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
434 PM MDT THU AUG 1 2013

.SYNOPSIS...DEEP MOISTURE ACROSS CENTRAL AND EASTERN UTAH WILL
REMAIN IN PLACE INTO TONIGHT. A DRYING TREND IS EXPECTED FRIDAY
THROUGH THE WEEKEND.

&&

.DISCUSSION...AREAL COVERAGE OF AFTERNOON CONVECTION GREATEST
ALONG THE MOIST SIDE OF A SIGNIFICANT MOISTURE GRADIENT DRAPED
FROM NORTHERN TO SOUTHWESTERN UTAH. DRY AND WINDY CONDITIONS TO
THE WEST OF THIS GRADIENT PROVIDING HEIGHTENED FIRE WEATHER
CONCERNS...ACTIVE CONVECTION IN DEEPER MOISTURE PRODUCING LOCALLY
HEAVY RAIN ACROSS NAMELY CENTRAL UTAH ATTM.

FAST MOVING CELLS HAVE HAD HISTORY OF PRODUCING DEBRIS FLOWS OFF
THE SEELEY BURN SCAR AND A SMALL FLOOD WAVE ON SULPHUR CREEK IN
CAPITOL REEF NP EARLIER THIS AFTERNOON. BULLS-EYE OF SBCAPE RAMPED
UP TO BETWEEN 1000-1500 J/KG PER SPC MESO ANALYSIS LAST FEW HOURS
IN VICINITY OF THESE AREAS THOUGH REMAINING QUITE THIN. ALTHOUGH
DECENT SHEAR IN PLACE ANTICIPATING PULSE-TYPE CELLS TO CONTINUE TO
DOMINATE AS SUCH. CELLS WILL CONTINUE TO POTENTIALLY IMPACT THESE MOST
PRONE TYPE AREAS INTO THIS EVENING...THOUGH WILL REMAIN HIT AND
MISS ON A MORE BROAD SCALE AND IMPACT WISE.

DEEP MOISTURE CURRENTLY IN PLACE WILL BE SHUNTED SOUTH AND EAST
QUITE RAPIDLY TONIGHT AS PACNW TROUGH NOTED IN AFTERNOON WATER
VAPOR LIFTS INTO THE NORTHERN ROCKIES STATES. THE WEAK SURFACE
BOUNDARY NOW ALONG THE UT/NV BORDER WILL SHIFT INTO NORTHERN
UTAH/SW WYOMING THIS EVENING AS A RESULT BUT WILL WEAKEN QUITE
RAPIDLY WITH LOSS OF UPPER SUPPORT OVERNIGHT. CAN NOT RULE
ISOLATED HIGH BASED AND WINDY CONVECTION THIS EVENING ON LEADING
EDGE FOCUSED ALONG UT/ID BORDER AREAS UNTIL THAT OCCURS AS NAM
SUGGESTS. OUTSIDE OF A NET DECREASE IN CONVECTION FOR FRIDAY
ACROSS ALL AREAS...THE NORTH WILL SEE A NOTICED REPRIEVE TO THE
ABOVE NORMAL TEMPS AS OF LATE...EVEN IF FOR A DAY OR TWO AS H7
TEMPS WILL TAKE A HIT OF SOME OF SOME 2-4 DEGREES...LESS SO SOUTH.

A DRY SOUTHWESTERLY FLOW AND A NET WARMING TREND TO TEMPS EXPECTED
FOR THE WEEKEND AS THE MEAN PACNW TROUGH RELOADS AND DRY SOUTHWEST
FLOW ALOFT DOMINATES LOCAL AREAS. GLOBAL MODELS ACTUALLY LINING UP
PRETTY WELL FOR THE BULK OF NEXT WEEK IN 12Z RUNS RESOLVING
LOCATION OF LARGER SCALE FEATURES...WEST COAST TROUGH AND
ELONGATED HIGH ACROSS THE SOUTHERN US INTERIOR. AGAIN PATTERN
LOOKS TO SET UP A TIGHT GRADIENT BETWEEN DRY SOUTHWEST FLOW PRE-
TROUGH AND A MORE DEEPLY MOIST MONSOONAL INFLUENCE AROUND THE
WESTERN PERIPHERY OF HIGH. DUE TO SOME RUN TO RUN INCONSISTENCIES
SHIFTING THIS GRADIENT EVEN A FEW HUNDRED MILES LONGITUDINALLY
OVER THE LAST FEW...CONFIDENCE STILL ON THE LOWER SIDE WHERE
EXACTLY ANY SURGE WILL SET UP. GENERALLY LIGHT SIDE POPS REMAIN IN
FORECAST PRONE CENTRAL TERRAIN AND POINTS EAST AGAIN BEGINNING
MONDAY PM...BUT FOCUSED MOISTURE LOOKS TO REMAIN OVER COLORADO AND
POINTS EAST.

&&

.AVIATION...GUSTY SOUTH WINDS WILL CONTINUE AT THE KSLC TERMINAL
THROUGH THE AFTERNOON. GUSTS ARE EXPECTED TO PERIODICALLY REACH THE
26KT AWW CRITERIA THROUGH 0000 UTC.  ISOLATED SHOWERS ARE DEVELOPING
ACROSS PORTIONS OF NORTHWEST UTAH AND THERE IS A 10 PERCENT CHANCE
OF AN OUTFLOW BOUNDARY BRINGING GUSTY ERRATIC WINDS TO THE KSLC
TERMINAL THIS AFTERNOON AND EVENING. A WEAK COOL FRONT WILL PASS
THROUGH THE TERMINAL TONIGHT SWITCHING WINDS TO NORTHWEST FOR A
BRIEF PERIOD AROUND 0600 UTC.

&&

.FIRE WEATHER...GUSTY WINDS HAVE DEVELOPED ACROSS THE WESTERN HALF
OF UTAH THIS AFTERNOON. WITH DRY CONDITIONS ACROSS WESTERN
UTAH...RED FLAG CONDITIONS ARE BEING MET. A RED FLAG WARNING FOR
GUSTY WINDS AND LOW RH WILL REMAIN IN EFFECT THROUGH 9PM THIS
EVENING.

ACROSS THE EASTERN THIRD OF UTAH...MOISTURE SURGING NORTHWARD HAS
RESULTED IN SHOWERS AND THUNDERSTORMS. WHILE THE MAJORITY OF THESE
STORMS WILL BE ACCOMPANIED BY WETTING RAIN...STORMS FORMING ALONG
THE BORDER OF THIS MOISTURE SURGE MAY INITIALLY BE DRY. THE MAIN
AREA OF CONCERN FOR DRY THUNDERSTORMS EXISTS ACROSS CENTRAL UTAH.
HOWEVER...COVERAGE OF THESE STORMS IS NOT EXPECTED TO BE
WIDESPREAD ENOUGH TO WARRANT ANY HIGHLIGHTS.

LOW HUMIDITIES WILL PERSIST THOUGH THE WEEKEND. ACROSS WESTERN
UTAH...WINDS WILL DECREASE TOMORROW AFTERNOON. ISOLATED LOCATIONS
MAY SEE WINDS GUSTING TO 30 MPH...BUT CONDITIONS ARE NOT EXPECTED
TO BE WIDESPREAD ENOUGH TO JUSTIFY A RED FLAG WARNING FOR TOMORROW
AFTERNOON. HOWEVER...WIND SPEEDS TOMORROW AFTERNOON ACROSS WESTERN
UTAH WILL BE SOMETHING TO WATCH. IF GUSTY WINDS ARE MORE
WIDESPREAD THAN CURRENTLY EXPECTED...A RED FLAG WARNING MAY BE
NECESSARY.

DRY CONDITIONS WILL CONTINUE INTO THE WEEKEND...WITH MOISTURE
LINGERING ACROSS EXTREME SOUTHEASTERN UTAH.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...
UT...RED FLAG WARNING UNTIL 9 PM MDT THIS EVENING BELOW 7000 FEET FOR
     UTZ479.

     RED FLAG WARNING UNTIL 9 PM MDT THIS EVENING FOR UTZ478-492-495.

WY...NONE.
&&

MERRILL/GRAHAM/HOSENFELD

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 PM MDT THU AUG 1 2013

UTZ001>016-019>021-517-518-WYZ021-021200-
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 PM MDT THU AUG 1 2013

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

GUSTY WINDS WILL CONTINUE TO COMBINE WITH LOW HUMIDITY VALUES
RESULTING IN CRITICAL FIRE WEATHER CONDITIONS ACROSS THE WESTERN
VALLEYS AND NORTHERN MOUNTAINS OF UTAH THROUGH THIS EVENING.

SCATTERED SHOWERS AND THUNDERSTORMS WILL BE CAPABLE OF LOCALLY
HEAVY RAIN IN CENTRAL AND SOUTHERN UTAH INTO THIS EVENING. A FEW DRY
THUNDERSTORMS PRODUCING STRONG GUSTY WINDS WILL DEVELOP ALONG THE
FRINGES OF THE MOISTURE SURGE ACROSS WESTERN AND NORTHERN UTAH.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

MOISTURE WILL LINGER ACROSS THE EAST ON FRIDAY CONTINUING A SMALL
THREAT OF THUNDERSTORMS. OTHERWISE...A DRYING TREND WILL
REDEVELOP FOR THE WEEKEND. A SMALL THREAT OF HAZARDOUS FIRE
WEATHER CONDITIONS DUE TO GUSTY WINDS AND LOW HUMIDITY EXISTS FOR
MAINLY WEST-CENTRAL AND SOUTHWEST UTAH ON FRIDAY.

.SPOTTER INFORMATION STATEMENT...

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

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

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1228 PM MDT THU AUG 01 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1215 PM     FLASH FLOOD      4 W CAPITOL REEF NP     38.29N 111.28W
08/01/2013                   WAYNE              UT   PARK/FOREST SRVC

            FLASH FLOOD REPORTED IN SULPHUR CREEK IN CAPITAL REEF
            NATIONAL PARK

&&

RGRAHAM

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
237 PM MDT THU AUG 01 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0236 PM     FLASH FLOOD      5 N HUNTINGTON          39.40N 110.96W
08/01/2013                   EMERY              UT   COUNTY OFFICIAL

            LARGE DEBRIS FLOW COVERING SR 31. 1-2 FT. DEEP OF
            TREES...MUD...ROCKS AND WATER COVERING ROAD.

&&

BMCINERN