Flash Flood Warning 4, NWS Salt Lake City, UT

301 
WGUS75 KSLC 242133
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
333 PM MDT SUN MAY 24 2015

UTC025-242345-
/O.CON.KSLC.FF.W.0004.000000T0000Z-150524T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KANE UT-
333 PM MDT SUN MAY 24 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 545 PM MDT FOR
EASTERN KANE COUNTY...

AT 330 PM MDT...TRAINED WEATHER SPOTTERS REPORTED THUNDERSTORMS 
PRODUCING HEAVY RAIN IN EASTERN KANE COUNTY EARLIER IN THE 
AFTERNOON. ADDITIONAL THUNDERSTORMS HAVE DEVELOPED OVER THE 
HEADWATERS OF LAST CHANCE AND WARM CREEKS. 

FLASH FLOODING REMAINS LIKELY ACROSS THE AREA INCLUDING THE  
WAHWEAP...LAST CHANCE AND WARM CREEK DRAINAGES AS WELL AS CROTON 
CANYON. ADDITIONAL SMALL STREAMS...DRY WASHES AND SLOT CANYONS 
ACROSS EASTERN KANE COUNTY ARE AT RISK OF FLASH FLOODING. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

REMAIN ALERT FOR FLOODING EVEN IN LOCATIONS NOT RECEIVING RAIN. DRY
WASHES...STREAMS AND RIVERS CAN BECOME RAGING KILLER CURRENTS IN A
MATTER OF MINUTES...EVEN FROM DISTANT RAINFALL.

&&

LAT...LON 3718 11188 3728 11187 3753 11120 3746 11094
      3731 11084 3728 11087 3723 11087 3713 11094
      3711 11112 3708 11114 3711 11118 3707 11120
      3706 11130 3700 11143 3700 11156

$$

CRK

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1013 AM MDT SUN MAY 24 2015

.SYNOPSIS...A COOL AND MOIST NORTHERLY FLOW WILL REMAIN ACROSS
THE REGION THROUGH THIS EVENING. HIGH PRESSURE WILL SLIDE EAST
ACROSS UTAH LATE TONIGHT THROUGH TUESDAY...FOLLOWED BY THE NEXT
PACIFIC STORM SYSTEM TO IMPACT MAINLY THE NORTHERN GREAT BASIN
MIDWEEK.

&&

.DISCUSSION...THE UPPER LOW POSITIONED OVER SOUTH-CENTRAL WYOMING
THIS MORNING WILL CONTINUE ON A SLOW EASTWARD TRACK TOWARDS THE
CENTRAL PLAINS STATES TODAY. THE STILL COOL AND MOIST AIR MASS IN
PLACE OVER THE REGION WILL KEEP THINGS PRIMED FOR SCATTERED
CONVECTION AREA-WIDE THROUGH AT LEAST THIS EVENING. WEAK HIGH
PRESSURE ALOFT WILL SLIDE WEST-TO-EATS ACROSS THE GREAT BASIN LATE
TONIGHT THOUGH TUESDAY.

THE POSITION OF THE UPPER LOW A BIT FURTHER TO THE NORTH IN
WYOMING WILL ALLOW WEAK SHORTWAVES ROTATING AROUND THE PARENT LOW
TO TRACK SOUTH ACROSS ALL OF UTAH THROUGH EARLY THIS EVENING.
THESE DYNAMIC FEATURES WILL REMAIN RATHER SUBTLE...EVEN IN THE
WATER VAPOR IMAGERY...BUT WILL SUPPLY SUFFICIENT DYNAMIC LIFT IN
THIS FAVORABLE AIR MASS FOR SHOWERS/ISOLATED THUNDERSTORMS JUST
ABOUT ANYWHERE IN THE FORECAST AREA THROUGH THIS EVENING. DEEP
CONVECTION OUTSIDE OF MAYBE NORTHEAST UTAH WILL STRUGGLE TO
DEVELOP TODAY AS THE MID-LEVELS HAVE WARMED SLIGHTLY AND 700-400MB
SHEAR REMAINS WEAK.

PRECIP WILL WIND DOWN LATE TONIGHT AS THE UPPER LOW DRIFTS OFF
INTO THE PLAINS STATES AND WEAK HIGH PRESSURE ALOFT MOVES INTO THE
GREAT BASIN FROM THE WEST. TERRAIN-BASED CONVECTION SHOULD FIRE
UP AGAIN MONDAY...THOUGH SUSPECT THAT PRECIP WILL BE SOMEWHAT
LIMITED IN AREAL COVERAGE WITH THE UPPER RIDGE MOVING THROUGH THE
STATE.

THE UPPER LOW MOVING INTO THE PACIFIC NORTHWEST/NORTHERN ROCKIES
FOR TUESDAY/WEDNESDAY WILL BRING A CYCLONIC WEST-SOUTHWEST FLOW TO
THE NORTHERN/CENTRAL GREAT BASIN MIDWEEK. IMPACTS IN TERMS OF
SHOWERS/STORMS WILL LIKELY BE LIMITED TO THE NORTHERN HALF OF THE
FORECAST AREA...WITH WARMER AND BREEZY CONDITIONS FOR THE SOUTH.

ISSUED AN EARLIER UPDATE TO BRING SHOWERS/STORMS IN A BIT EARLIER
ACROSS NORTHERN UTAH TODAY. REMAINDER OF THE FORECAST LOOKS FINE
AT THIS TIME.

&&

.AVIATION...WINDS AT THE SLC TERMINAL ARE EXPECTED TO REMAIN
NORTHERLY THROUGH 03Z THEN SHIFT BACK TO SOUTHEAST. ALTHOUGH THERE
IS A 20 PERCENT CHANCE WINDS MAY SWITCH BACK TO SOUTHEAST THROUGH
17Z THE WINDS WILL BE LIGHT. SHOWERS WILL BE IN THE VICINITY MAINLY
THROUGH ABOUT 20Z WITH CIGS OSCILLATING BETWEEN 5500 AND 7000 FT
AGL. AFT 20Z...CIGS WILL LIKELY REMAIN AT OR ABOVE 7000 FT AGL.

&&

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

PUBLIC...CONGER
AVIATION...STRUTHWOLF

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
944 PM MDT SAT MAY 23 2015

UTZ001>016-019>021-517-518-WYZ021-241300-
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-
944 PM MDT SAT MAY 23 2015

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

.DAY ONE...TONIGHT

PRECIPITATION WILL CONTINUE MANLY ACROSS SOUTHERN UTAH OVERNIGHT.
SNOW LEVELS WILL REMAIN IN THE 8000 TO 9000 FOOT RANGE...HOWEVER
MAY BRIEFLY LOWER WITHIN AREAS OF HEAVIER PRECIPITATION.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

SHOWERS AND THUNDERSTORMS CAN BE EXPECTED AT TIMES ACROSS THE
OUTLOOK AREA THROUGHOUT THE HOLIDAY WEEKEND AND INTO 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)

FOR INFORMATION ON POTENTIAL ROAD TRAVEL IMPACTS VISIT...
HTTP://WWW.UDOTTRAFFIC.UTAH.GOV/ROADWEATHERFORECAST.ASPX