Flash Flood Warning 14, NWS Salt Lake City, UT

082 
WGUS75 KSLC 292325
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
525 PM MDT TUE JUL 29 2014

UTC023-039-300015-
/O.CON.KSLC.FF.W.0014.000000T0000Z-140730T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JUAB UT-SANPETE UT-
525 PM MDT TUE JUL 29 2014

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 615 PM MDT FOR
EAST CENTRAL JUAB AND NORTHERN SANPETE COUNTIES...

AT 518 PM MDT...PORTIONS OF STATE ROUTE 28 BETWEEN LEVAN AND 
GUNNISON AND STATE ROUTE 132 EAST OF NEPHI REMAIN CLOSED AT THIS 
TIME DUE TO FLASH FLOODING AND DEBRIS ON THE ROADWAYS. THE 
THUNDERSTORMS THAT BROUGHT THE INTENSE RAINFALL THAT PRODUCED THIS 
FLASH FLOODING HAVE SHIFTED TO THE NORTHEAST AND RAINFALL HAS SINCE 
TAPERED.



PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE CONTINUE TO HEED ANY ROAD CLOSURES IN THESE AREAS.

&&

LAT...LON 3969 11171 3947 11172 3947 11192 3979 11185
      3980 11167 3972 11167

$$

GM

147 
WGUS75 KSLC 300013
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
613 PM MDT TUE JUL 29 2014

UTC023-039-300022-
/O.EXP.KSLC.FF.W.0014.000000T0000Z-140730T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JUAB UT-SANPETE UT-
613 PM MDT TUE JUL 29 2014

...THE FLASH FLOOD WARNING FOR EAST CENTRAL JUAB AND NORTHERN SANPETE
COUNTIES WILL EXPIRE AT 615 PM MDT...

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 3969 11171 3947 11172 3947 11192 3979 11185
      3980 11167 3972 11167

$$

GM

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1037 AM MDT TUE JUL 29 2014

.SYNOPSIS...A VERY MOIST AIR MASS WILL REMAIN OVER THE AREA THROUGH
EARLY WEDNESDAY. A SLOW DRYING TREND WILL TAKE HOLD BEGINNING
WEDNESDAY AS HIGH PRESSURE ALOFT STRENGTHENS ACROSS THE INTERIOR
WEST.

&&

.DISCUSSION...TWO MID LEVEL CIRCULATION CENTERS WILL INTERACT WITH
A VERY MOIST AIRMASS TO BRING SHOWER AND THUNDERSTORM ACTIVITY TO
MUCH OF UTAH THROUGH THIS EVENING. THE PRECIPITABLE WATER VALUE OF
1.34 INCHES FROM THE 1200 UTC KSLC SOUNDING IS ABOUT 2.5 STANDARD
DEVIATIONS ABOVE NORMAL. THE FIRST CIRCULATION CENTER..LOCATED OVER
NORTHERN UTAH...WILL DRIFT SLOWLY TO THE EAST TODAY. EXPECT MOSTLY
CLOUDY SKIES OVER MUCH OF NORTHERN UTAH WITH NUMEROUS SHOWERS AND
THUNDERSTORMS THROUGH THE DAY. THE SECOND CIRCULATION CENTER
OPENS INTO AN OPEN WAVE AND MOVES INTO SOUTHWEST UTAH THIS
AFTERNOON. SOUTHERN UTAH IS RECEIVING A FAIR AMOUNT OF SUNSHINE
THIS MORNING AND THIS AREA WILL DESTABILIZE AS WE HEAD TOWARD
AFTERNOON. THUS EXPECT SCATTERED THUNDERSTORMS TO DEVELOP ACROSS
THE SOUTHERN PORTION OF THE STATE THIS AFTERNOON. WITH LIMITED
FLOW...MLCAPE VALUES OF 1000-1500 J/KG...AND A VERY MOISTURE RICH
ENVIRONMENT SOME STORMS WILL BE CAPABLE OF PRODUCING HEAVY RAIN
ACROSS THE STATE THIS AFTERNOON. IN THIS UPDATE HAVE INCREASED
POPS ACROSS SOUTHWEST UTAH AS WELL AS PORTIONS OF NORTHERN UTAH.

TEMPERATURES WILL BE A LITTLE COOLER TODAY WITH MOST WESTERN
VALLEYS SEEING MAX TEMPERATURES IN THE LOW TO MID 80S....WHILE
EASTERN VALLEYS HAVE HIGHS IN THE LOW TO MID 90S. THIS IS WELL
COVERED IN CURRENT GRIDS AND ONLY MINIMAL ADJUSTMENTS WERE MADE
THERE.

&&

.AVIATION...VFR CONDITIONS ARE EXPECTED TO PREVAIL THROUGH THE TAF
PERIOD AT THE SLC TERMINAL. LIGHT AND VARIABLE WINDS WILL BECOME
PREDOMINANTLY NORTH-NORTHWESTERLY BETWEEN 17-18Z. SHOWERS AND
THUNDERSTORMS IN THE VICINITY OF THE TERMINAL WILL CAUSE PERIODS OF
GUSTY AND/OR ERRATIC WINDS THIS AFTERNOON...WITH A 20 PERCENT CHANCE
OF MVFR CONDITIONS IN HEAVY RAIN AFTER 18Z.
&&

.FIRE WEATHER...MONSOONAL MOISTURE WILL REMAIN OVER THE DISTRICT
TODAY. FOCUS OF SHOWERS AND THUNDERSTORMS WILL BE OVER NORTHERN UTAH
BUT SCATTERED CONVECTION WILL OCCUR OVER SOUTHERN UTAH AS WELL. A
SLOW DRYING TREND WILL COMMENCE FOR THE MIDDLE TO LATTER PART OF THE
WEEK...THOUGH THE THREAT OF CONVECTION REMAINS. WINDS ARE EXPECTED
TO BE GENERALLY LIGHT OVER THE NEXT FEW DAYS WITH HIGH PRESSURE IN
PLACE.

&&

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

PUBLIC...GRAHAM
FIRE WEATHER...TRAPHAGAN
AVIATION...VERZELLA

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
546 AM MDT TUE JUL 29 2014

UTZ001>016-019>021-517-518-WYZ021-301215-
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-
546 AM MDT TUE JUL 29 2014

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

.DAY ONE...TODAY AND TONIGHT

SCATTERED SHOWERS ACROSS MUCH OF WESTERN UTAH EARLY THIS MORNING
WILL INCREASE IN AREAL COVERAGE THROUGHOUT THE DAY. THE GREATEST
CONCENTRATION OF SHOWERS WILL REMAIN ACROSS NORTHERN UTAH WHERE
PERIODS OF BRIEF HEAVY RAINFALL WILL BE POSSIBLE. ISOLATED
THUNDERSTORMS WILL DEVELOP AGAIN BY THIS AFTERNOON. THESE STORMS
WILL ALSO HAVE THE POTENTIAL TO GENERATE HEAVY RAINFALL.

AFTERNOON HIGH TEMPERATURES WILL REMAIN BELOW LATE JULY NORMS DUE
TO PRECIPITATION AND CLOUD COVER. READINGS WILL RANGE BETWEEN 5
AND 10 DEGREES BELOW NORMAL ACROSS MOST OF THE OUTLOOK AREA.

SHOWER AND THUNDERSTORM ACTIVITY WILL CONTINUE IN EARLY THIS
EVENING...THEN GRADUALLY DECREASE HEADING INTO LATE EVENING. THE
MOST LIKELY AREA FOR PRECIPITATION TO LINGER OVERNIGHT WILL
REMAIN ACROSS NORTHEAST UTAH THROUGH SOUTHWEST WYOMING.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

LINGER MOISTURE WILL ALLOW FOR SOME AFTERNOON AND EVENING SHOWERS
AND THUNDERSTORMS ON WEDNESDAY. A NEW WEATHER DISTURBANCE MOVING
NORTH THROUGH NEVADA AND WESTERN UTAH WILL PRODUCE SHOWERS AND
STORMS ACROSS SOUTHWEST UTAH LATE THURSDAY...THEN ACROSS MUCH OF
NORTHWEST UTAH FRIDAY.

STRENGTHENING HIGH PRESSURE ALOFT WILL BRING WARMER AND DRIER
CONDITIONS TO MUCH OF THE OUTLOOK AREA OVER THE WEEKEND. THE
THREAT FOR SHOWERS AND THUNDERSTORMS WILL RETURN TO MAINLY WESTERN
UTAH LATE SUNDAY AND MONDAY AS THE NEXT WEATHER DISTURBANCE ROLLS
NORTH OUT OF ARIZONA.

.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 ROAD TRAVEL IMPACTS VISIT...
HTTP://WWW.UDOTTRAFFIC.UTAH.GOV/ROADWEATHERFORECAST.ASPX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
138 PM MDT TUE JUL 29 2014

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

0110 PM     FLASH FLOOD      13 SSE CAPITOL REEF NP  38.11N 111.11W
07/29/2014                   GARFIELD           UT   PARK/FOREST SRVC

            NATIONAL PARK RANGERS REPORTED FLASH FLOODING ON PLEASANT
            CREEK AND ALONG THE SOUTH DRAW ROAD IN CAPITOL REEF
            NATIONAL PARK.

&&

GM

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
158 PM MDT TUE JUL 29 2014

UTZ012-013-292100-
CASTLE COUNTRY UT-SAN RAFAEL SWELL UT-
158 PM MDT TUE JUL 29 2014

...SPECIAL WEATHER STATEMENT...

AT 155 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORM 25 MILES WEST OF GREEN RIVER. THIS STORM WAS
NEARLY STATIONARY.

TORRENTIAL RAINFALL IS EXPECTED TO CREATE PONDING OF WATER ALONG
INTERSTATE 70 IN THIS AREA. ADDITIONALLY...NORMALLY DRY WASHES IN
NORTHERN PORTIONS OF THE SAN RAFAEL SWELL WILL EXPERIENCE FLOWS. PEA
SIZE HAIL WILL ALSO BE POSSIBLE.

THIS STORM WILL REMAIN OVER MAINLY RURAL AREAS OF CENTRAL EMERY
COUNTY...BUT WILL IMPACT INTERSTATE 70 AND NORTHERN PORTIONS OF THE
SAN RAFAEL SWELL.

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.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
OFFICE IN SALT LAKE CITY.

&&

LAT...LON 3881 11035 3871 11070 3915 11091 3924 11062
TIME...MOT...LOC 1955Z 180DEG 0KT 3891 11063

GM

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
308 PM MDT TUE JUL 29 2014

UTZ014-015-517-292145-
WEST CENTRAL UTAH UT-SANPETE/SEVIER VALLEYS UT-
CENTRAL AND SOUTHWEST MOUNTAINS UT-
308 PM MDT TUE JUL 29 2014

...SPECIAL WEATHER STATEMENT...

AT 304 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 11 MILES SOUTHEAST OF DELTA...MOVING NORTHEAST AT
25 MPH.

TORRENTIAL RAINFALL IS EXPECTED TO CREATE PONDING OF WATER ALONG
INTERSTATE 15 BETWEEN SCIPIO AND HOLDEN. VISIBILITIES ARE EXPECTED
TO BE SEVERELY REDUCED AS WELL MAKING TRAVEL HAZARDOUS IN THIS
AREA. PEA SIZE HAIL WILL ALSO BE POSSIBLE.

LOCATIONS IMPACTED INCLUDE...
SCIPIO...HOLDEN...YUBA LAKE STATE PARK...MC CORNICK AND GREENWOOD.

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.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 3911 11277 3927 11277 3946 11183 3907 11194
TIME...MOT...LOC 2104Z 240DEG 49KT 3922 11246

GM