Alert archive / Utah / Flash Flood Warnings in 1994

Flash Flood Warning 13, NWS Salt Lake City, UT

August 21, 1994Wayne County, Utah

NWS Salt Lake City, UT issued this flash flood warning at Aug 21, 1994, 2:49 PM MDT for Wayne County, Utah. It was in force for 56 min.

The area

The counties it named.

The facts

Issued
Aug 21, 1994, 2:49 PM MDT (20:49 UTC)
Expired
Aug 21, 1994, 3:45 PM MDT
In force
56 min
Issued by
NWS Salt Lake City, UT
Area
Whole counties

County Wayne County, UT

The nearest sounding before it

Grand Junction, CO (KGJT), launched 12:00Z, 8.8 hours before the alert went out and 227 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Grand Junction, CO at 12:00Z on 1994-08-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Grand Junction, CO at 12:00Z on 1994-08-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 7 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
2 J/kg
Mixed-layer CIN
-246 J/kg
Mixed-layer LCL
1924 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
7 m²/s²
0-3 km storm-relative helicity
54 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KSLC 212053
FFWSLC
UTC055-212145-

BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
249 PM MDT SUN AUG 21 1994

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A 
FLASH FLOOD WARNING EFFECTIVE UNTIL  345 PM MDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN SOUTH CENTRAL UTAH

   ...WAYNE COUNTY

PARK SERVICE EMPLOYEES REPORT FLASH FLOODING AT CAPITOL REEF NATIONAL
PARK.  THE UPPER END OF GRAND WASH WAS FLOODING WITH TWO FEET OF
WATER AND THE CAMPGROUND AREA AT THE PARK WAS ALSO EXPERIENCING SOME
FLOODING.  THE FREMONT RIVER HAS RISEN ABOUT TWO FEET IN A FEW
MINUTES. 
 
THE FLOODING IN GRAND WASH IS LIKELY TO CROSS HIGHWAY 24. 

A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT.  MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.  DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS
THE ROADWAY.  NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL
ONE...ON FOOT.  TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.



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Nearby

Flash Flood Warnings in Utah, 1994Every flash flood warning in 1994

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.