Alert archive / Utah / Flash Flood Warnings in 1994
Flash Flood Warning 9, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this flash flood warning at Aug 11, 1994, 6:00 PM MDT for Garfield County, Wayne County, Utah. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Aug 11, 1994, 6:00 PM MDT (00:00 UTC)
- Expired
- Aug 11, 1994, 8:00 PM MDT
- In force
- 2 hr
- Issued by
- NWS Salt Lake City, UT
- Area
- Whole counties
Counties Garfield County, UT, Wayne County, UT
The nearest sounding before it
Grand Junction, CO (KGJT), launched 00:00Z, 0.0 hours before the alert went out and 260 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.
- Mixed-layer CAPE
- 56 J/kg
- Mixed-layer CIN
- -49 J/kg
- Mixed-layer LCL
- 3256 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 19 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSLC 120003 FFWSLC UTC055-031-017-112300- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE SALT LAKE CITY UT 600 PM MDT THU AUG 11 1994 THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 800 PM MDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHERN UTAH ...SEVIER...WAYNE...GARFIELD SATELLITE STILL INDICATES STRONG THUNDERSTORMS IN THE SEVIER...WAYNE... ...AND GARFIELD COUNTIES. IN CAPITOL REEF NATIONAL PARK...CASTLE GORGE ROAD WAS REPORTED TO BE FLOODED. THE THUNDERSTORMS ARE MOVING NORTHEAST AT 10-15 MPH. A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOM6OBILES. 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. OMAI..0000Z
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, Aug 11, 5:38 PM MDT, 22 minutes before
UTZ001>003-010-110300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 538 PM MDT THU AUG 11 1994 ...A BAND OF THUNDERSTORMS ARE MOVING INTO NORTHWESTERN UTAH... THUNDERSTORMS IN NORTHEASTERN NEVADA ARE MOVING INTO NORTHWESTERN UTAH. THESE THUNDERSTORMS HAVE PRODUCED SMALL HAIL AND MODERATE RAIN AT OASIS NEVADA /25 MILES EAST OF WELLS/. THE THUNDERSTORMS MAY PRODUCE LOCALLY HEAVY SHOWERS...WINDS...AND SMALL HAIL. LOOSE ITEMS THAT COULD BE BLOWN AWAY OR DAMAGED BY STRONG WINDS SHOULD BE SECURED. OMAI...2338Z
The office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 6:00 PM MDT | Flash Flood Warning | SLC | Sevier | 2 hr |
| Aug 11, 9:43 PM MDT | Severe Thunderstorm Warning | SLC | Juab, Millard | 62 min |
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.