Flash Flood Warning 6, NWS Salt Lake City, UT

000 
WGUS75 KSLC 242350
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
545 PM MDT TUE JUL 24 2007

UTC055-250130-
WAYNE UT-
545 PM MDT TUE JUL 24 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 730 PM MDT FOR
CENTRAL WAYNE COUNTY...

AT 536 PM MDT...A THUNDERSTORM PRODUCING FLASH FLOODING WAS REPORTED 
ALONG SULPHUR CREEK AND THE FREMONT RIVER THROUGH CAPITAL REEF 
NATIONAL PARK.

HIGH WATER WILL CONTINUE TO FLOW ALONG THE FREMONT RIVER TOWARD 
CAINEVILLE AND EXPECTED TO DIMINISH NEAR HANKSVILLE.

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 3824 11136 3828 11110 3833 11100 3841 11140
      3841 11149

$$

SMITH/MCINERNEY

000 
WGUS75 KSLC 250119
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
714 PM MDT TUE JUL 24 2007

UTC055-250130-
WAYNE UT-
714 PM MDT TUE JUL 24 2007

...THE FLASH FLOOD WARNING FOR WAYNE COUNTY HAS BEEN ALLOWED TO 
EXPIRE...

THE FLASH FLOOD THAT FLOWED THROUGH CAPITOL REEF NATIONAL PARK VIA 
SULPHER CREEK AND THE FREMONT RIVER HAS DIMINISHED AND IS NO LONGER 
A THREAT. THE FREMONT RIVER EAST OF CAINEVILLE HOWEVER IS EXPECTED 
TO FLOW AT RELATIVELY HIGHER LEVELS THROUGHOUT THE NIGHT AS IT 
MERGES INTO THE DIRTY DEVIL RIVER NEAR HANKSVILLE.

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 3824 11136 3828 11110 3833 11100 3841 11140
      3841 11149

$$

MCINERNEY

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
324 PM MDT TUE JUL 24 2007

.SYNOPSIS...HIGH PRESSURE TO THE EAST OF UTAH WILL MAINTAIN A VERY
MOIST SOUTHERLY FLOW ACROSS THE GREAT BASIN THROUGH MIDWEEK. THE
RIDGE WILL DRIFT SLOWLY WESTWARD...SETTLING OVER UTAH BY THE WEEKEND.

&&

.DISCUSSION...CONVECTION IS DEVELOPING RAPIDLY THIS AFTERNOON
ACROSS THE WESTERN TWO THIRDS OF THE STATE. THE GREATEST COVERAGE
IS OVER NORTHWESTERN UTAH WHERE THE AIRMASS IS MOST MOIST AND WHERE
THERE IS GREATER FORCING FROM NEARBY SHORTWAVES. SATELLITE DERIVED
PW VALUES OF GREATER THAN 1.5 INCHES HAVE BEEN OBSERVED
THERE...BUT PWS ARE AT LEAST AN INCH OVER THE ENTIRE FORECAST AREA WITH
THE EXCEPTION OF PORTIONS OF FAR EASTERN UTAH. BECAUSE OF THE
SLIGHTLY DECREASED MOISTURE...CONVECTION HAS BEEN SLOW TO DEVELOP
ACROSS THE EAST TODAY BUT SHOULD FILL IN LATER THIS AFTERNOON. THE
INCREASED MOISTURE AND CLOUD COVER IS ACTING TO PRODUCE COOLER
TEMPERATURES...WITH MOST OF WESTERN UTAH AND THE WASATCH FRONT
SEEING TEMPERATURES 5 TO 7F COOLER THAN THEY WERE AT THIS TIME
YESTERDAY. LINGERING PRECIPITATION EXPECTED ONCE AGAIN
OVERNIGHT...ESPECIALLY IN NORTHWEST UTAH IN THE VICINITY OF THE
STRONGER SHORTWAVE. THE BEST FORCING SEEMS TO BE IN AREAS WITH
STRONGER FLOW ALOFT...SO WIDESPREAD FLASH FLOODING IS NOT
ANTICIPATED. HOWEVER...WITH THE AIRMASS AS MOIST AS IT IS...SOME
AREAS COULD SEE LOCALLY HEAVY RAINFALL AND ISOLATED FLOODING.

THE OVERALL PATTERN LOOKS TO CHANGE ONLY SLIGHTLY OVER THE NEXT
SEVERAL DAYS. MODELS PREDICT THAT THE UPPER RIDGE AXIS OVER COLORADO
WILL SLOWLY MOVE WESTWARD BEGINNING TOMORROW...MOVING OVERHEAD BY
SATURDAY. MOISTURE IS EXPECTED TO SLOWLY DECREASE OVER THE NEXT
FEW DAYS AS THE FLOW ALOFT BECOMES MORE NORTHERLY. HOWEVER...MODEL
DERIVED PW VALUES HAVE BEEN RANGING FROM 0.75 INCHES OVER NORTHERN
UTAH TO OVER 1.25 INCHES OVER SOUTHERN UTAH THROUGH SATURDAY...SO
THE AIRMASS SHOULD STILL REMAIN ABNORMALLY MOIST. AS A
RESULT...SCATTERED AFTERNOON CONVECTION IS EXPECTED TO CONTINUE
INTO THE WEEKEND WITH ONLY A SLOW WARMING OF TEMPERATURES.

THE GFS AND ECMWF AGREE THAT AFTER SETTLING OVER UTAH ON SATURDAY
THE UPPER RIDGE WILL DRIFT BACK EASTWARD BEGINNING SUNDAY. IF THIS
SCENARIO PANS OUT...THE FLOW ALOFT WILL SHIFT BACK TO THE
SOUTH...RESULTING IN INCREASING MOISTURE ONCE AGAIN FOR THE
BEGINNING OF NEXT WEEK.

&&

.AVIATION...WINDS WILL BE PREDOMINANTLY FROM THE SOUTH AT THE KSLC
TERMINAL THIS AFTERNOON INTO THE EVENING.  HOWEVER...OUTFLOW FROM
THUNDERSTORMS IN THE AREA WILL PRODUCE OCCASIONAL GUSTY ERRATIC
WINDS AT THE TERMINAL. THERE IS A 50 PERCENT CHANCE THAT A
THUNDERSTORM WILL DIRECTLY IMPACT THE AIRPORT BETWEEN 2200 UTC AND
0300 UTC.  AFTER THIS TIME THE CHANCE WILL DROP TO 30 PERCENT
THROUGH THE REMAINDER OF THE NIGHT. TYPICAL DIURNAL SOUTHEAST WIND
IS EXPECT TO BECOME ESTABLISHED AROUND 0300 UTC.

&&

.FIRE WEATHER...THUNDERSTORMS HAVE BEEN WIDESPREAD FOR THE NORTHERN
UTAH AND RICHFIELD DISPATCH AREAS. COLOR COUNTRY HAS HAD LESS
ACTIVITY AND THE MOAB AREA HAS BEEN MOSTLY SUNNY. THUNDERSTORMS
DEVELOPING OVER WESTERN COLORADO ARE LIKELY TO TRACK INTO SOUTHEAST
UTAH TONIGHT. FOR SOUTHWEST UTAH...THE STORMS IN NORTHWEST ARIZONA
MAY MOVE NORTH TO BRING RAIN AND LIGHTNING TO THE AREA. THE MOIST
AIRMASS REMAINS IN PLACE FOR WEDNESDAY.

&&

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

&&

PUBLIC...TRAPHAGAN
FIRE WEATHER...GIBSON
AVIATION...GRAHAM

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

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
645 AM MDT TUE JUL 24 2007

UTZ001>016-019>021-517-518-WYZ021-251300-
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-
645 AM MDT TUE JUL 24 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN TWO THIRDS OF
UTAH ALONG WITH FAR SOUTHWEST WYOMING.

.DAY ONE...TODAY AND TONIGHT

A VERY MOIST AIRMASS WILL REMAIN ACROSS UTAH AND THE SURROUNDING
STATES TODAY. THE EXPECTED SHOWERS AND THUNDERSTORMS COULD PRODUCE
LOCALLY HEAVY RAINFALL...ESPECIALLY OVER THE MOUNTAINS AND ACROSS
PORTIONS OF SOUTHWEST UTAH. LOCAL FLOOD COULD DEVELOP...ESPECIALLY
IN THE SLICK ROCK AND SLOT CANYON COUNTRY OF SOUTHERN UTAH.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THE ABUNDANT MOISTURE OVER THE INTERIOR WEST WILL REMAIN IN PLACE
OVER UTAH AND SOUTHWEST WYOMING INTO WEDNESDAY. SHOWERS AND
THUNDERSTORMS COULD AGAIN PRODUCE LOCALLY HEAVY RAIN ON WEDNESDAY.

SLIGHTLY DRIER AIR WILL MOVE INTO EXTREME NORTHWEST UTAH LATE IN THE
WEEK. THE REMAINDER OF THE AREA WILL SEE SCATTERED AFTERNOON AND
EVENING THUNDERSTORMS...MAINLY OVER AND NEAR THE MOUNTAINS...THROUGH
THE EARLY NEXT WEEK.

.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)