Flash Flood Warning 14, NWS Salt Lake City, UT

706 
WGUS75 KSLC 172110
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
310 PM MDT WED JUL 17 2013

UTC007-015-172230-
/O.CON.KSLC.FF.W.0014.000000T0000Z-130717T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CARBON UT-EMERY UT-
310 PM MDT WED JUL 17 2013

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 430 PM MDT FOR
NORTHWESTERN EMERY AND SOUTHWESTERN CARBON COUNTIES...

AT 306 PM MDT...HEAVY RAINFALL THAT FELL OVER THE SEELEY BURN SCAR 
BROUGHT STORM TOTAL ACCUMULATIONS OF UP TO .70 INCHES TO WESTERN 
PORTIONS OF THE SCAR. RAINFALL HAS SINCE DIMINISHED BUT THESE 
ACCUMULATIONS ARE EXPECTED TO BE SUFFICIENT FOR FLASH FLOODING 
DOWNSTREAM OF THE SCAR ALONG HUNTINGTON CREEK NORTHWEST OF THE TOWN 
OF HUNTINGTON. THESE FLOWS ARE ALSO EXPECTED TO IMPACT THE 
HUNTINGTON POWER PLANT DOWNSTREAM OF THE BURN AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF A DEBRIS FLOW HAS OCCURRED IT IS IMPORTANT REALIZE THAT THE RUNOUT
AREA REMAINS VERY DANGEROUS. ADDITIONAL DEBRIS FLOWS MAY OCCUR WITHIN
MINUTES OF THE ORIGINAL FLOW. PLEASE REMAIN VIGILANT AND BE PREPARED
TO TAKE SWIFT ACTION.

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 3962 11123 3964 11107 3945 11105 3935 11094
      3930 11098 3941 11123

$$

MERRILL

808 
WGUS75 KSLC 172227
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
427 PM MDT WED JUL 17 2013

UTC007-015-172232-
/O.EXP.KSLC.FF.W.0014.000000T0000Z-130717T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CARBON UT-EMERY UT-
427 PM MDT WED JUL 17 2013

...THE FLASH FLOOD WARNING WILL EXPIRE AT 430 PM MDT FOR NORTHWESTERN
EMERY AND SOUTHWESTERN CARBON COUNTIES...

AS OF 422 PM MDT LIGHT RAIN CONTINUES TO FALL OVER PORTIONS OF THE 
SEELEY BURN SCAR...BUT RAINFALL RATES SUITABLE FOR CREATING FLASH 
FLOODING HAVE ENDED. THEREFORE...THE FLASH FLOOD WARNING HAS BEEN 
ALLOWED TO EXPIRE. MONITOR NOAA WEATHER RADIO OR LOCAL TELEVISION OR 
RADIO FOR THE LATEST WEATHER INFORMATION.

IF A DEBRIS FLOW HAS OCCURRED IT IS IMPORTANT REALIZE THAT THE RUNOUT
AREA REMAINS VERY DANGEROUS. ADDITIONAL DEBRIS FLOWS MAY OCCUR WITHIN
MINUTES OF THE ORIGINAL FLOW. PLEASE REMAIN VIGILANT AND BE PREPARED
TO TAKE SWIFT ACTION.

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 3962 11123 3964 11107 3945 11105 3935 11094
      3930 11098 3941 11123

$$

MERRILL

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
957 AM MDT WED JUL 17 2013

.SYNOPSIS...A WARM AND MOIST AIR MASS WILL REMAIN OVER THE EASTERN
GREAT BASIN TODAY. HIGH PRESSURE WILL SHIFT WEST INTO NEVADA FOR
THE LATTER HALF OF THE WEEK...ALLOWING A DRYING TREND FROM NORTH
TO SOUTH...WITH DEEP MOISTURE BECOMING CONFINED TO FAR SOUTHERN
UTAH BY THE WEEKEND.

&&

.DISCUSSION...SATELLITE WATER VAPOR IMAGERY CONTINUE TO SHOW A
MID LEVEL RIDGE AXIS OVER EASTERN UTAH AND WESTERN COLORADO. DEEP
LAYER MOISTURE RESIDES ACROSS THE FORECAST AREA AS EVIDENT IN THE
12Z SLC SOUNDING WITH A PRECIPITABLE WATER VALUE OF 1.20 INCHES.
EXPECT ANOTHER AFTERNOON AND EVENING OF SHOWERS AND
THUNDERSTORMS...ESPECIALLY OVER THE HIGHER TERRAIN OF THE EAST AND
SOUTH. AS SUCH...UPDATED THE FORECAST TO RAISE POPS TO LIKELY
CATEGORY OVER THE CENTRAL AND SOUTHERN MOUNTAINS AND OVER THE
UINTA MOUNTAINS. LOCALLY HEAVY RAINFALL AGAIN POSSIBLE MAINLY OVER
THE SOUTH AND ALTHOUGH NO FLASH FLOOD WATCH WAS ISSUED...WILL
STILL HAVE TO MONITOR CONVECTION CLOSELY AS THE POTENTIAL FOR LASH
FLOODING REMAINS.

&&

.AVIATION...SOUTHEAST SURFACE WINDS EXPECTED TO SWITCH BACK TO
NORTHERLY WINDS BETWEEN 19Z AND 21Z THIS AFTERNOON. THUNDERSTORM
ACTIVITY COULD ONCE AGAIN IMPACT THE TERMINAL TODAY...WITH A 30
PERCENT CHANCE OF GUSTY ERRATIC WINDS BETWEEN 22Z AND 04Z.

&&

.FIRE WEATHER...AN UPPER LEVEL RIDGE WILL REMAIN IN PLACE OVER THE
GREAT BASIN THROUGH THE WEEKEND. VERY MOIST AIRMASS SITUATED OVER
THE DISTRICT TODAY WILL ONCE AGAIN RESULT IN AFTERNOON AND EVENING
THUNDERSTORMS ACROSS THE STATE...WITH THE GREATEST COVERAGE EXPECTED
ACROSS SOUTHERN UTAH. WITH A VERY MOIST AIRMASS OVER THE STATE
NEARLY ALL STORMS THAT DEVELOP THIS AFTERNOON AND EVENING WILL BE
CAPABLE OF PRODUCING WETTING RAINS.  AFTERNOON MINIMUM RELATIVE
HUMIDITIES WILL BE RATHER HIGH TODAY AND WINDS WILL BE PRIMARILY
TERRAIN DRIVEN...ALTHOUGH STRONG GUSTY WINDS WILL BE POSSIBLE NEAR
ANY THUNDERSTORMS.

THE UPPER LEVEL RIDGE BEGINS TO SHIFT TO THE WEST THURSDAY INTO THE
WEEKEND. THIS WILL ENABLE MUCH DRIER AIR TO BEGIN TO WORK INTO THE
FAR NORTHWEST PORTION OF UTAH BEGINNING THURSDAY WHICH THEN SPREADS
SOUTH THROUGH MUCH OF THE STATE FRIDAY INTO THE WEEKEND. AS THE
DRIER AIR MOVES INTO THE THE THREAT OF CONVECTION WILL BE CONFINED
FURTHER SOUTH EACH DAY.  DURING THIS PERIOD TEMPERATURES WILL CLIMB
WITH HOT CONDITIONS EXPECTED LATE THIS WEEK THROUGH THE WEEKEND.
AFTERNOON MINIMUM RELATIVE HUMIDITY VALUES WILL DECREASE INTO THE
WEEKEND AND WESTERN VALLEYS...ESPECIALLY WEST CENTRAL AND
NORTHWEST...MAY APPROACH CRITICALLY LOW VALUES BY SATURDAY.
HOWEVER...WINDS WILL GENERALLY BE LIGHT AND TERRAIN DRIVEN THROUGH
THE PERIOD.

&&

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

PUBLIC/AVIATION...YOUNG
FIRE WEATHER......GRAHAM

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
340 AM MDT WED JUL 17 2013

UTZ001>016-019>021-517-518-WYZ021-181000-
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-
340 AM MDT WED JUL 17 2013

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

.DAY ONE...TODAY AND TONIGHT

SHOWERS AND THUNDERSTORMS CAPABLE OF PRODUCING LOCALLY HEAVY
RAINFALL WILL ONCE AGAIN BE POSSIBLE ACROSS THE OUTLOOK AREA THIS
AFTERNOON AND EVENING. ISOLATED FLASH FLOODING WILL BE
POSSIBLE...PARTICULARLY WITHIN SLOT CANYONS...NORMALLY DRY
WASHES...AND NEAR RECENT BURN SCARS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

SOME POTENTIAL FOR LOCALLY HEAVY RAINFALL AND FLASH FLOODING WILL
STILL EXIST ON THURSDAY. DRIER AIR WILL SLOWLY SPREAD ACROSS THE
REGION FROM NORTH TO SOUTH FOR THE LATTER HALF OF THE WEEK. BY THE
WEEKEND THUNDERSTORMS WILL LIKELY BE CONFINED TO FAR SOUTHERN
UTAH.

HIGH TEMPERATURES WILL BE AT OR CLOSE TO TRIPLE DIGITS ACROSS
MANY VALLEY LOCATIONS THROUGHOUT THE PERIOD.

.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
125 PM MDT WED JUL 17 2013

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

0349 PM     FLASH FLOOD      4 WNW HENRIEVILLE       37.58N 112.05W
07/16/2013                   GARFIELD           UT   PARK/FOREST SRVC

            PARIA RIVER DRAINAGE EXPERIENCED A FLASH FLOOD IN MANY
            TRIBUTARIES INCLUDING BUCKSKIN...LICK...BULL...YELLOW AND
            WILLIS. SKUTUMPAH ROAD SHOWED A FOUR FOOT HIGH MUDLINE.

&&

CRK