Flash Flood Warning 53, NWS Salt Lake City, UT

000 
WGUS75 KSLC 142030
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
229 PM MDT SAT OCT 14 2006

UTC017-142045-
GARFIELD UT-
229 PM MDT SAT OCT 14 2006

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 245 PM MDT FOR
SOUTHWESTERN GARFIELD COUNTY...

AT 223 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE SHOWERS CAPABLE OF PRODUCING FLASH FLOODING OVER THE WARNED 
AREA.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PANGUITCH.

THE HEAVIEST SHOWERS HAVE MOVED TO THE WEST OF HIGHWAY 89. HEAVY 
RUNOFF FROM PAST PRECIPITATION COMBINED WITH THE ADDITIONAL RAINFALL
HAS LIKELY PRODUCED FLASH FLOODING ALONG THE SMALL CREEKS AND 
STREAMS IN THE WARNING AREA.

LAT...LON 3755 11262 3754 11223 3773 11219 3787 11250

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1024 AM MDT SAT OCT 14 2006

.SYNOPSIS...AN UPPER LOW MOVING ACROSS SOUTHERN CALIFORNIA WILL
SPREAD MOISTURE ACROSS CENTRAL AND SOUTHERN UTAH TODAY.

&&

.DISCUSSION...CLOSED LOW OVER SOUTHERN CALIFORNIA IS MOVING SLOWLY
TO THE EAST THIS MORNING. MOISTURE CONTINUES TO BUILD INTO THE
STATE...WITH CLOUDS EXTENDING AS FAR NORTH AS THE UTAH/IDAHO
BORDER. PRECIPITATION IS BECOMING FAIRLY WIDESPREAD ACROSS THE
SOUTHERN HALF OF THE STATE...AND COULD MOVE AS FAR NORTH AS THE
SOUTHERN WASATCH FRONT BY THIS AFTERNOON. SO FAR...THE GREATEST
AMOUNT OF PRECIPITATION HAS FALLEN IN SOUTHWESTERN UTAH...WHERE
SOME LOCATIONS HAVE ALREADY SEEN MORE THAN A HALF INCH OF RAIN.
MOISTURE AXIS WILL SHIFT EAST TODAY AS THE LOW APPROACHES WESTERN
ARIZONA...AND THE MODELS FORECAST PRECIPITABLE WATER VALUES TO
APPROACH 1 INCH OVER SOUTH CENTRAL AND SOUTHEASTERN UTAH BY THIS
AFTERNOON. A FLASH FLOOD WATCH HAS BEEN ISSUED FOR PORTIONS OF
SOUTHERN UTAH. SEE THE HYDRO SECTION FOR DETAILS.

A LINE OF STRONG THUNDERSTORMS CONTINUES OVER SOUTHERN NEVADA ON
THE CYCLONIC SIDE OF THE JET STREAK NEAR THE CENTER OF THE UPPER
LOW. THE STORMS ARE BUILDING EASTWARD INTO WESTERN ARIZONA WHERE
MORE FAVORABLE UPPER LEVEL DIVERGENCE IS IN PLACE AS THEY MOVE
AROUND THE LOW CENTER. THE FOCUS OF THESE STORMS IS EXPECTED TO
SHIFT EAST TODAY ALONG WITH THE LOW...BUT ENVIRONMENT BECOMES FAR
LESS FAVORABLE AROUND SOUTHERN UTAH...SO STRONG THUNDERSTORMS
SHOULD REMAIN SOUTH OF THE AREA.

MOISTURE IS FORECAST TO DECREASE OVERNIGHT AS THE UPPER LOW MOVES
ACROSS ARIZONA...AND PRECIPITATION SHOULD TAPER OFF BY
TOMORROW...THOUGH SHOWERS MAY LINGER INTO THE AFTERNOON HOURS
OVER SOUTHEASTERN UTAH.

FORECAST WAS UPDATED EARLIER TO INCLUDE MENTION OF THE FLASH
FLOOD WATCH. NO ADDITIONAL UPDATES ANTICIPATED THIS MORNING.

&&

.HYDROLOGY...PRECIPITATION SO FAR HAS BEEN HEAVIEST IN
SOUTHWESTERN AND SOUTH CENTRAL UTAH...WHERE 0.5-0.7 INCHES OF RAIN
HAS ALREADY FALLEN IN SOME LOCATIONS. THE PRECIPITATION FOCUS WILL
SHIFT EAST BY THIS AFTERNOON AS THE UPPER LOW TRACKS INTO WESTERN
ARIZONA. MODEL QPFS IN GOOD AGREEMENT...WITH 0.75-1.0 INCHES
EXPECTED OVER SOUTHERN UTAH THROUGH SUNDAY MORNING WITH LOCALLY
HIGHER AMOUNTS. A FLASH FLOOD WATCH IS IN EFFECT UNTIL 8 PM FOR AN
AREA EXTENDING FROM AROUND ZION NATIONAL PARK TO THE GLEN CANYON
RECREATION AREA AND INTO THE SAN RAFAEL SWELL.

&&

.AVIATION...CLOUDS WILL BE WIDESPREAD TODAY AT KSLC.
HOWEVER...PRECIPITATION IS EXPECTED TO REMAIN SOUTH OF THE AREA
AND CIGS WILL STAY WELL ABOVE 7000 FEET.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...
UT...FLASH FLOOD WATCH UNTIL 8 PM TODAY FOR UTZ013-018<021.

WY...NONE.

&&

TRAPHAGAN

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
416 AM MDT SAT OCT 14 2006

UTZ012>021-151100-
CASTLE COUNTRY-SAN RAFAEL SWELL-SANPETE/SEVIER VALLEYS-
WEST CENTRAL UTAH-SOUTHWEST UTAH-CENTRAL AND SOUTHWEST MOUNTAINS-
HENRY MOUNTAINS-UTAHS DIXIE AND ZION NATIONAL PARK-
SOUTH CENTRAL UTAH-GLEN CANYON RECREATION AREA/LAKE POWELL-
416 AM MDT SAT OCT 14 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL UTAH
AND SOUTHERN UTAH.

.DAY ONE...TODAY AND TONIGHT

MOISTURE SPREADING ACROSS THE REGION WILL RESULT IN WIDESPREAD
SHOWERS AND ISOLATED THUNDERSTORMS ACROSS MUCH OF CENTRAL AND
SOUTHERN UTAH TODAY. THIS RAINFALL WILL RESULT IN FLOWS THROUGH
SLOT CANYONS AND NORMALLY DRY WASHES ACROSS THE OUTLOOK AREA...AND
RESULT IN AN ELEVATED FLASH FLOOD THREAT ACROSS SLICK ROCK AREAS.
SHOWERS AND THUNDERSTORMS WILL DIMINISH THIS EVENING ACROSS THE
AREA.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

A STRONG COLD FRONT WILL MOVE ACROSS THE OUTLOOK AREA LATE MONDAY
INTO TUESDAY...USHERING MUCH COOLER AIR INTO THE REGION. VALLEY
RAIN AND MOUNTAIN SNOW WILL ACCOMPANY THE FRONT AS IT PASSES.

.SPOTTER INFORMATION STATEMENT...

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

UTZ001>011-WYZ021-151100-
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-SOUTHWEST WYOMING-
416 AM MDT SAT OCT 14 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL UTAH...
NORTHERN UTAH AND SOUTHWEST WYOMING.

.DAY ONE...TODAY AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

A COLD FRONT WILL MOVE ACROSS THE OUTLOOK AREA MONDAY AND MONDAY
EVENING...USHERING MUCH COOLER AIR INTO THE REGION. A CHANCE OF
VALLEY RAIN AND MOUNTAIN SNOW WILL ACCOMPANY THIS FRONT
MONDAY...AND PERSIST INTO TUESDAY.

.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)