Flash Flood Warning 87, NWS Salt Lake City, UT

687 
WGUS75 KSLC 042256
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
456 PM MDT WED SEP 4 2013

UTC053-050015-
/O.CON.KSLC.FF.W.0087.000000T0000Z-130905T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WASHINGTON UT-
456 PM MDT WED SEP 4 2013

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 615 PM MDT FOR
SOUTHEASTERN WASHINGTON COUNTY...

AT 454 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
OVER 2 INCHES OF PRECIPITATION HAD FALLEN OVER THE SHORT CREEK 
DRAINAGE NEAR THE TOWN OF HILDALE.

ALTHOUGH THE HEAVIEST PRECIPITATION HAS MOVED OFF TO THE WEST...IT 
IS INFERRED WITH THAT MUCH PRECIPITATION FALLING OVER A VERY FLASHY 
DRAINAGE...FLASH FLOODING IS OCCURRING AND ANTICIPATED TO CONTINUE 
THROUGH THE EVENING 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 3705 11299 3708 11296 3707 11291 3700 11291
      3700 11299

$$

MCINERNEY

513 
WGUS75 KSLC 050006
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
606 PM MDT WED SEP 4 2013

UTC053-050016-
/O.EXP.KSLC.FF.W.0087.000000T0000Z-130905T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WASHINGTON UT-
606 PM MDT WED SEP 4 2013

...THE FLASH FLOOD WARNING WILL EXPIRE AT 615 PM MDT FOR SOUTHEASTERN
WASHINGTON COUNTY...

AS THE INTENSE RAINFALL HAS MOVED OUT OF THE SHORT CREEK 
DRAINAGE...THE FLASH FLOOD WARNING HAS BEEN ALLOWED TO EXPIRE.

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 3705 11299 3708 11296 3707 11291 3700 11291
      3700 11299

$$

MCINERNEY

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
307 PM MDT WED SEP 4 2013

.SYNOPSIS...A RIDGE OF HIGH PRESSURE OVER THE CENTRAL ROCKIES
PAIRED WITH AN UPPER TROUGH OFF THE PACIFIC NORTHWEST COAST WILL
MAINTAIN A MOIST SOUTHERLY FLOW ACROSS THE REGION THROUGH THE
REMAINDER OF THE WEEK.

&&

.DISCUSSION...WATER VAPOR IMAGERY INDICATES RIDGE AXIS OVER
COLORADO ROCKIES. A LOW PRESSURE CENTER OFF THE PACIFIC NORTHWEST
COAST NOW APPEARS TO BE MOVING SLOWLY SOUTHEASTWARD AS IT RESIDES
AT ABOUT 44N 129W AT THIS TIME. THIS FEATURE CONTINUES TO ELONGATE
FROM NORTH TO SOUTH AS NEXT UPSTREAM SYSTEM OVER THE GULF OF
ALASKA CONTINUES TO PUSH EAST AND THE ROCKY MOUNTAIN RIDGE REFUSES
TO BUDGE. BETWEEN THESE FEATURES...A PERSISTENT SOUTHERLY FLOW
CONTINUES TO DRAW MOISTURE INTO THE CWA FROM THE SOUTH.
PRECIPITABLE WATER VALUES STILL REMAIN NEAR OR ABOVE AN INCH AND
ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS HAVE COMMENCED.
THE SUBTLE VORTICITY FEATURE DETECTED EARLIER ON SATELLITE WATER
VAPOR IMAGERY HAS PIVOTED OUT OF ARIZONA AND HAS BECOME A
FOCUSING MECHANISM OVER MUCH OF SOUTHERN UTAH THIS AFTERNOON. THE
POTENTIAL FOR HEAVY RAINFALL AND FLASH FLOODING IS PRESENT AND
WILL BE EVALUATED THROUGH THE AFTERNOON AND EVENING HOURS. EXTRA
ATTENTION WILL BE PAID TO BURN AREAS...ESPECIALLY THE SEELEY BURN
SCAR.

LITTLE CHANGE IN THIS PATTERN IS INDICATED FOR REMAINDER OF THE
WEEK AS MOISTURE REMAINS IN PLACE. MODELS INDICATE THAT A SERIES
OF WEAK DISTURBANCES WRAPPING AROUND THE PARENT LOW OFF THE
NORTHWEST COAST WILL MOVE THROUGH THE CWA AND KICK OFF CONVECTION
EACH AFTERNOON. CONVECTION WILL BE LARGELY DIURNAL IN NATURE
ALTHOUGH ANY ONE OF THESE UPPER LEVEL DISTURBANCE COULD PROMOTE
SOME NOCTURNAL SHOWERS AND THUNDERSTORMS.

GFS AND ECMWF IN AGREEMENT WITH THE UPPER LOW EVENTUALLY OPENING
AND TRACKING EAST ACROSS THE NORTHERN ROCKIES SUNDAY AND MONDAY.
A WEAK ASSOCIATED COLD FRONT WILL DIP INTO NORTHWEST UTAH BY LATE
SUNDAY AND THEN SLOWLY WORK ITS WAY SOUTHEASTWARD THROUGH MONDAY
BEFORE DIMINISHING. FORCING FROM THE UPPER TROUGH AND COLD FRONT
MAY ENHANCE SHOWERS AND THUNDERSTORMS SUNDAY AND MONDAY ACROSS
NORTHERN UTAH. THE FOCUS WILL SHIFT TO SOUTHEAST UTAH ON MONDAY
AS FRONT WASHES OUT AND THE AIRMASS OVER NORTHERN UTAH DRIES.

&&

.AVIATION...NORTHWEST WINDS WILL CONTINUE AT THE SLC TERMINAL
THROUGH THE EVENING...SHIFTING TO THE SOUTH BETWEEN 02-04Z. THERE
IS A 20 PERCENT CHANCE OF OUTFLOW WINDS FROM THUNDERSTORMS IN THE
SALT LAKE VALLEY IMPACTING THE TERMINAL BETWEEN 21-02Z.

&&

.FIRE WEATHER...FIRE WEATHER CONCERNS ARE MINIMAL THROUGH THE END OF
THE WEEK...WITH RH FORECAST TO REMAIN ABOVE CRITICAL LEVELS.
SOUTHWEST WINDS WILL INCREASE THURSDAY AHEAD OF A SYSTEM THAT WILL
BRUSH BY TO THE NORTH OF THE STATE LATER THIS WEEK. CONDITIONS WILL
GRADUALLY DRY ACROSS THE STATE THROUGH FRIDAY. MOISTURE WILL
INCREASE FROM THE SOUTH THIS WEEKEND...BRINGING AN UPTICK IN
AFTERNOON THUNDERSTORMS.

&&

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

PUBLIC.........YOUNG
FIRE WEATHER...HOSENFELD
AVIATION.......KRUSE

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
402 AM MDT WED SEP 4 2013

UTZ001>016-019>021-517-518-WYZ021-051015-
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-
402 AM MDT WED SEP 4 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 POSSIBLE AGAIN THIS AFTERNOON
AND EVENING ACROSS THE OUTLOOK AREA. LOCALLY HEAVY
RAIN WILL BE THE PRIMARY CONCERN...WITH SOME POTENTIAL FOR FLASH FLOODING.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

MOISTURE WILL REMAIN IN PLACE ACROSS THE OUTLOOK AREA THROUGH THE
REMAINDER OF THE WEEK...FOSTERING A CONTINUED CHANCE FOR SHOWERS
AND THUNDERSTORMS. LOCALLY HEAVY RAIN WILL STILL BE POSSIBLE.

THE FOCUS FOR SHOWERS AND THUNDERSTORMS WILL BE OVER THE SOUTHEAST
HALF OF THE OUTLOOK AREA TUESDAY AND WEDNESDAY AS DRIER AIR WORKS
INTO THE NORTHERN AND WESTERN SECTIONS OF UTAH.

.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

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
113 PM MDT WED SEP 4 2013

UTZ020-042000-
SOUTH CENTRAL UTAH UT-
113 PM MDT WED SEP 4 2013

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN KANE COUNTY UNTIL 200 PM
MDT...

AT 111 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 9 MILES EAST OF KANAB...MOVING NORTH AT 30 MPH.

PENNY TO NICKEL SIZE HAIL AND WIND GUSTS OF 40 TO 55 MPH ARE EXPECTED
WITH THIS STORM.

* LOCATIONS IMPACTED INCLUDE...
  RURAL CENTRAL AND SOUTHERN KANE COUNTY EAST OF KANAB INCLUDING US
  ROUTE 89 EAST OF KANAB...

HEAVY RAINFALL IS LIKELY WITH THIS STORM AS WELL...WHICH MAY CAUSE
PONDING ON ROADWAYS AND RUNOFF IN NORMALLY DRY WASHES.

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

LAT...LON 3698 11222 3699 11261 3728 11245 3726 11198
TIME...MOT...LOC 1912Z 193DEG 25KT 3707 11236

KRUSE