Alert archive / Utah / Flash Flood Warnings in 1994
Flash Flood Warning 1, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this flash flood warning at Jul 18, 1994, 6:40 PM MDT for Washington County, Utah. It was in force for 60 min.
The area
The counties it named.
The facts
- Issued
- Jul 18, 1994, 6:40 PM MDT (00:40 UTC)
- Expired
- Jul 18, 1994, 7:40 PM MDT
- In force
- 60 min
- Issued by
- NWS Salt Lake City, UT
- Area
- Whole counties
County Washington County, UT
The nearest sounding before it
Mercury/Desert R, NV (KDRA), launched 00:00Z, 0.7 hours before the alert went out and 234 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
- 131 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 3422 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- 110 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 190043 FFWSLC UTC053-190140- BULLETIN - EBS ACTIVATION REQUESTED SEVERE THUNDERSTORM AND FLASH FLOOD WARNING NATIONAL WEATHER SERVICE SALT LAKE CITY UT 640 PM MDT MON JUL 18 1994 THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A SEVERE THUNDERSTORM AND FLASH FLOOD WARNING EFFECTIVE UNTIL 740 PM MDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHWEST UTAH ...WASHINGTON COUNTY AT 630 PM A WIND GUST OF 70 MPH WAS REPORTED AT HURRICANE. HEAVY RAINFALL HAS BEEN REPORTED AT HURRICANE AND OTHER PORTIONS OF WASHINGTON COUNTY OVER THE LAST 1 HOUR WITH AMOUNTS OVER 1 INCH, AND HEAVY RAINFALL IS STILL BEING REPORTED. THUNDERSTORMS IN WASHINGTON COUNTY ARE MOVING TO THE WEST AT 10-15 MPH. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN... AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. ERC...0042Z &
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, Jul 18, 1:27 PM MDT, 5 hours 13 minutes before
UTZALL-182230Z- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 125 PM MDT SAT JUL 16 1994 ...AN INCREASE IN THUNDERSTORMS OVER UTAH THIS AFTERNOON... SATELLITE AND LIGHTNING DETECTION CHARTS SHOW THE SCATTERED THUNDERSTORMS DEVELOPING ACROSS SOUTHERN AND EASTERN UTAH THIS AFTERNOON. MOST ACTIVE AREAS ARE IN THE TORREY AND TEASDALE AREAS OF SOUTH CENTRAL UTAH THIS AFTERNOON. THESE THUNDERSTORMS CAN PRODUCED LOCAL BRIEF GUSTY MICROBURST WINDS ... DEADLY LIGHTNING...AND BRIEF SHOWERS FOR THE REST OF THIS AFTERNOON AND LINGER INTO THE EVENING HOURS. AS THESE STORMS APPROACH...MOTORISTS AND PERSONS OUT OF DOORS SHOULD TAKE NECESSARY PRECAUTIONS WHEN APPROACHING THESE STORMS, OR WHEN THUNDERSTORMS MOVE INTO YOUR AREA. SIU...1930Z
Special weather statement, Jul 18, 2:30 PM MDT, 4 hours 10 minutes before
UTZALL-182230Z- SPECIAL WEATHER STATEMENT CORRECTION (DAY/DATE/SWEET WATER CANYON) NATIONAL WEATHER SERVICE SALT LAKE CITY UT 230 PM MDT MON JUL 18 1994 ...MICROBURST WINDS EASTERN SEVIER COUNTY THIS AFTERNOON... THE UHP AT RICHFIELD REPORTED MICROBURST WINDS WITH ESTIMATED PEAK GUST OF 50 MPH ASSOCIATED WITH THUNDERSTORMS IN EASTERN SEVIER COUNTY AND AREAS OF BLOWING DUST REDUCING VISIBILITIES FOR MOTORISTS. AREAS OF THUNDERSTORMS CONTINUE TO EXPAND THIS AFTERNOON IN EASTERN AND SOUTHERN UTAH. OTHER ACTIVE AREAS INCLUDE ROOSEVELT, STRAWBERRY ..TORREY, TEASDALE AREA, SWEET WATER CANYON IN EAST CENTRAL UTAH...AND SOUTHWEST UTAH AROUND CEDAR CITY...ZION PARK AND ST GEORGE. GUSTY MICROBURST WINDS IN EXCESS OF 45 MPH... DEADLY LIGHTNING...AND BRIEF SHOWERS CAN BE EXPECTED TO CONTINUE FOR THE REST OF THIS AFTERNOON AND LINGER INTO THE EVENING HOURS. AS THESE STORMS APPROACH...MOTORISTS AND PERSONS OUT OF DOORS SHOULD TAKE NECESSARY PRECAUTIONS WHEN APPROACHING THESE STORMS, OR WHEN THUNDERSTORMS MOVE INTO YOUR AREA. SIU...2030Z
Special weather statement, Jul 18, 2:33 PM MDT, 4 hours 7 minutes before
UTZALL-182230Z- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 230 PM MDT SAT JUL 16 1994 ...MICROBURST WINDS EASTERN SEVIER COUNTY THIS AFTERNOON... THE UHP AT RICHFIELD REPORTED MICROBURST WINDS WITH ESTIMATED PEAK GUST OF 50 MPH ASSOCIATED WITH THUNDERSTORMS IN EASTERN SEVIER COUNTY AND AREAS OF BLOWING DUST REDUCING VISIBILITIES FOR MOTORISTS. AREAS OF THUNDERSTORMS CONTINUE TO EXPAND THIS AFTERNOON IN EASTERN AND SOUTHERN UTAH. OTHER ACTIVE AREAS INCLUDE ROOSEVELT, STRAWBERRY ..TORREY, TEASDALE AREA, WHITEWATER CANYON IN EAST CENTRAL UTAH...AND SOUTHWEST UTAH AROUND CEDAR CITY...ZION PARK AND ST GEORGE. GUSTY MICROBURST WINDS IN EXCESS OF 45 MPH... DEADLY LIGHTNING...AND BRIEF SHOWERS CAN BE EXPECTED TO CONTINUE FOR THE REST OF THIS AFTERNOON AND LINGER INTO THE EVENING HOURS. AS THESE STORMS APPROACH...MOTORISTS AND PERSONS OUT OF DOORS SHOULD TAKE NECESSARY PRECAUTIONS WHEN APPROACHING THESE STORMS,2 OR WHEN THUNDERSTORMS MOVE INTO YOUR AREA. SIU...2030Z
Special weather statement, Jul 18, 2:40 PM MDT, 4 hours before
UTZALL-182230Z- SPECIAL WEATHER STATEMENT CORRECTION (DAY/DATE/SWEET WATER CANYON) NATIONAL WEATHER SERVICE SALT LAKE CITY UT 230 PM MDT MON JUL 18 1994 ...MICROBURST WINDS EASTERN SEVIER COUNTY THIS AFTERNOON... THE UHP AT RICHFIELD REPORTED MICROBURST WINDS WITH ESTIMATED PEAK GUST OF 50 MPH ASSOCIATED WITH THUNDERSTORMS IN EASTERN SEVIER COUNTY AND AREAS OF BLOWING DUST REDUCING VISIBILITIES FOR MOTORISTS. AREAS OF THUNDERSTORMS CONTINUE TO EXPAND THIS AFTERNOON IN EASTERN AND SOUTHERN UTAH. OTHER ACTIVE AREAS INCLUDE ROOSEVELT, STRAWBERRY ..TORREY, TEASDALE AREA, SWEET WATER CANYON IN EAST CENTRAL UTAH...AND SOUTHWEST UTAH AROUND CEDAR CITY...ZION PARK AND ST GEORGE. GUSTY MICROBURST WINDS IN EXCESS OF 45 MPH... DEADLY LIGHTNING...AND BRIEF SHOWERS CAN BE EXPECTED TO CONTINUE FOR THE REST OF THIS AFTERNOON AND LINGER INTO THE EVENING HOURS. AS THESE STORMS APPROACH...MOTORISTS AND PERSONS OUT OF DOORS SHOULD TAKE NECERSSARY PRECAUTIONS WHEN APPROACHING THESE STORMS, OR WHEN THUNDERSTORMS MOVE INTO YOUR AREA. SIU...2030Z
Special weather statement, Jul 18, 4:55 PM MDT, 1 hour 45 minutes before
UTZALL-190630- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 455 PM MDT MON JUL 18 1994 ...STRONG THUNDERSTORMS DEVELOPING OVER UTAH LATE THIS AFTERNOON... STRONG THUNDERSTORMS ARE DEVELOPING OVER MUCH OF SOUTHERN AND CENTRAL UTAH LATE THIS AFTERNOON. THIS IS THE RESULT OF A VERY UNSTABLE AIRMASS WITH INCREASING MOISTURE MOVING INTO THE STATE. FOR THE 30 MINUTE PERIOD ENDING AT 4 PM THERE WERE 68 CLOUD TO GROUND LIGHTNING STRIKES IN WESTERN IRON COUNTY. LIGHTNING WAS ALSO OCCURRING OVER THE REMAINDER OF SOUTHERN AND EASTERN UTAH ALTHOUGH NOT AS FREQUENT. GUSTY WINDS AND AREAS OF BLOWING DUST WERE REPORTED BY THE HIGHWAY PATROL AT PARAGONAH IN SOUTHWEST UTAH AT 415 PM. EARLIER IN THE AFTERNOON A 50 MPH GUST WAS REPORTED IN EAST SEVIER CITY IN THE SOUTHWEST PORTION OF SEVIER COUNTY. A GUST TO 56 MPH WAS REPORTED AT DUCHESNE AT 2 PM THIS AFTERNOON. STRONG THUNDERSTORMS ARE EXPECTED TO CONTINUE INTO THE EVENING, POSSIBLY LASTING UNTIL MIDNIGHT. THE STRONGEST THUNDERSTORMS WILL BE IN THE SOUTHERN PART OF THE STATE. THERE WILL BE LESS ACTIVITY IN NORTHEAST UTAH, AND ONLY ISOLATED THUNDERSTORMS ARE EXPECTED IN NORTHWEST UTAH. ASSOCIATED WITH THE STRONG THUNDERSTORMS WILL BE GUSTY WINDS, FREQUENT LIGHTNING, LOCALLY HEAVY RAINFALL, AND POSSIBLE SMALL HAIL. IF THREATENING WEATHER APPROACHES YOUR AREA, TAKE SHELTER IMMEDIATELY. REMEMBER THAT LIGHTNING IS THE NUMBER ONE WEATHER KILLER IN UTAH. DO NOT BECOME A HUMAN LIGHTNING ROD. ERC...2255Z WUUS01KABR .+
Special weather statement, Jul 18, 4:56 PM MDT, 1 hour 44 minutes before
UTZALL-190630- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 455 PM MDT MON JUL 18 1994 ...STRONG THUNDERSTORMS DEVELOPING OVER UTAH LATE THIS AFTERNOON... STRONG THUNDERSTORMS ARE DEVELOPING OVER MUCH OF SOUTHERN AND CENTRAL UTAH LATE THIS AFTERNOON. THIS IS THE RESULT OF A VERY UNSTABLE AIRMASS WITH INCREASING MOISTURE MOVING INTO THE STATE. FOR THE 30 MINUTE PERIOD ENDING AT 4 PM THERE WERE 68 CLOUD TO GROUND LIGHTNING STRIKES IN WESTERN IRON COUNTY. LIGHTNING WAS ALSO OCCURRING OVER THE REMAINDER OF SOUTHERN AND EASTERN UTAH ALTHOUGH NOT AS FREQUENT. GUSTY WINDS AND AREAS OF BLOWING DUST WERE REPORTED BY THE HIGHWAY PATROL AT PARAGONAH IN SOUTHWEST UTAH AT 415 PM. EARLIER IN THE AFTERNOON A 50 MPH GUST WAS REPORTED IN EAST SEVIER CITY IN THE SOUTHWEST PORTION OF SEVIER COUNTY. A GUST TO 56 MPH WAS REPORTED AT DUCHESNE AT 2 PM THIS AFTERNOON. STRONG THUNDERSTORMS ARE EXPECTED TO CONTINUE INTO THE EVENING, POSSIBLY LASTING UNTIL MIDNIGHT. THE STRONGEST THUNDERSTORMS WILL BE IN THE SOUTHERN PART OF THE STATE. THERE WILL BE LESS ACTIVITY IN NORTHEAST UTAH, AND ONLY ISOLATED THUNDERSTORMS ARE EXPECTED IN NORTHWEST UTAH. ASSOCIATED WITH THE STRONG THUNDERSTORMS WILL BE GUSTY WINDS, FREQUENT LIGHTNING, LOCALLY HEAVY RAINFALL, AND POSSIBLE SMALL HAIL. IF THREATENING WEATHER APPROACHES YOUR AREA, TAKE SHELTER IMMEDIATELY. REMEMBER THAT LIGHTNING IS THE NUMBER ONE WEATHER KILLER IN UTAH. DO NOT BECOME A HUMAN LIGHTNING ROD. ERC...2255Z
The office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 6:40 PM MDT | Severe Thunderstorm Warning | SLC | Washington | 60 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.