Alert archive / Utah / Flash Flood Warnings in 1992

Flash Flood Warning 6, NWS Salt Lake City, UT

May 26, 19925 counties in Utah

NWS Salt Lake City, UT issued this flash flood warning at May 26, 1992, 4:43 PM MDT for 5 counties in Utah. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued: May 26, 1992, 4:43 PM MDT (22:43 UTC)
Expired: May 26, 1992, 7:00 PM MDT
In force: 2 hr
Issued by: NWS Salt Lake City, UT
Area: Whole counties

Counties Carbon County, UT, Emery County, UT, Sanpete County, UT, Sevier County, UT, Utah County, UT

The nearest sounding before it

Salt Lake City I, UT (KSLC), launched 12:00Z, 10.7 hours before the alert went out and 165 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 18 J/kg
Mixed-layer CIN: -342 J/kg
Mixed-layer LCL: 2211 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 66 m²/s²
0-3 km storm-relative helicity: 164 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 262254
FFWSLC
UTC039-041-049-007-015-270100-

BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
443 PM MDT TUE MAY 26 1992

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A 
FLASH FLOOD WARNING EFFECTIVE UNTIL  700 PM MDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...

IN CENTRAL UTAH

   ...SAN PETE COUNTY...SEVIER COUNTY...SOUTHEASTERN UTAH COUNTY

IN EAST CENTRAL UTAH

   ...CARBON COUNTY...EMERY COUNTY

HEAVY PRECIPITATION HAS BEEN REPORTED BY MANY PERSONS SOUTH OF
SOLDER'S SUMMIT INTO EMERY COUNTY AND EAST OF THE RICHFIELD...YUBA
LAKE AREA EASTWARD TO THE GREEN RIVER.  

STRONG THUNDERSTORMS WITH HEAVY RAINFALL ARE MOVING SOUTHEAST IN THE
WARNING AREA.  PRECIPITATION AMOUNTS FROM 0.50 OF AN INCH TO 1.10
INCHES HAS BEEN REPORTED SINCE 2PM THIS AFTERNOON...MAKING FOR VERY
SATURATED SOILS.  SEVERAL MUD SLIDES AND FLOODED DIPS ACROSS ROADWAYS
HAVE ALSO BEEN REPORTED.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT.  MOVE TO HIGHER GROUND TO ESCAPE RISING WATER. 

DO NOT TRY TO OUTRACE A FLASH FLOOD...EITHER ON FOOT OR IN YOUR
VEHICLE.  MOVE TO HIGHER GROUND IMMEDIATELY.

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, May 26, 1:13 PM MDT, 3 hours 30 minutes before

UTZALL-270100-
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
110 PM MDT TUE MAY 26 1992

      ...THUNDERSTORMS ON THE INCREASE OVER WESTERN UTAH...

A COLD FRONT ENTERING NORTHWEST UTAH HAS BROUGHT A RAPID DEVELOPMENT
IN THUNDERSTORMS OVER NORTHERN AND WESTERN PORTIONS OF THE STATE
EARLY THIS AFTERNOON.  STRONG THUNDERSTORMS EXTEND FROM NEAR SALT
LAKE CITY SOUTH TO DELTA UTAH.  ANOTHER AREA OF STRONG STORMS WAS
NOTED OVER THE UINTA MOUNTAINS OF NORTHEAST UTAH.

WIDESPREAD SHOWER AND THUNDERSTORM ACTIVITY IS EXPECTED OVER ALL OF
WESTERN UTAH LATER THIS AFTERNOON AS THE COLD FRONT CONTINUES
EASTWARD.  THUNDERSTORMS WILL ALSO INCREASE OVER EASTERN UTAH LATER
THIS AFTERNOON AS DAYTIME HEATING REACHES IT'S MAXIMUM.

THUNDERSTORMS WILL PRODUCE BRIEF HEAVY RAINFALL...SMALL HAIL...GUSTY
WINDS AND FREQUENT LIGHTNING.  REPORTS RECEIVED ALREADY HAVE WEST
KEARNS WITH A HALF AN INCH OF RAIN /.50/ AND PEA-SIZE HAIL.  WEST
JORDAN AND MAGNA HAVE ALSO REPORTED PEA-SIZE HAIL FROM THUNDERSTORMS.

OUTDOOR ACTIVITIES WILL BE IMPAIRED BY TODAY`S THUNDERSTORMS.  LIGHTNING
IS A PROVEN KILLER...THERFORE STAY INDOORS OF IN YOUR CAR WITH LIGHTNING
IN YOUR AREA.  ALSO...MINOR FLOODING OF ROADWAYS IN URBAN AREAS IS
POSSIBLE.  DRIVE CAUTIOUSLY IF FLOODED ROADS ARE ENCOUNTERED.

MCC...1910Z

The office that day

Everything else NWS Salt Lake City, UT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 25, 7:20 PM MDT	Flash Flood Warning	SLC	Garfield, Kane, San Juan	3 hr
May 26, 2:46 PM MDT	Severe Thunderstorm Warning	SLC	Sevier	44 min
May 26, 5:20 PM MDT	Flash Flood Warning	SLC	Uintah	100 min

Nearby

Flash Flood Warnings in Utah, 1992 Every flash flood warning in 1992

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.