Alert archive / Utah / Flash Flood Warnings in 1994
Flash Flood Warning 3, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this flash flood warning at Jul 29, 1994, 6:40 PM MDT for Iron County, Washington County, Utah. It was in force for 50 min.
The area
The counties it named.
The facts
- Issued
- Jul 29, 1994, 6:40 PM MDT (00:40 UTC)
- Expired
- Jul 29, 1994, 7:30 PM MDT
- In force
- 50 min
- Issued by
- NWS Salt Lake City, UT
- Area
- Whole counties
Counties Iron County, UT, Washington County, UT
The nearest sounding before it
Ely/Yelland Fld, NV (KELY), launched 00:00Z, 0.7 hours before the alert went out and 226 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
- 39 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 3802 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 9 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 300040 FFWSLC UTC021-053-300200- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE SALT LAKE CITY UT 640 PM MDT FRI JUL 29 1994 THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 730 PM MDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHWEST UTAH ...WESTERN IRON COUNTY...NORTHERN WASHINGTON COUNTY THE UTAH HIGHWAY PATROL REPORTS FLASH FLOODING WEST OF CEDAR CITY NEAR NEWCASTLE /IRON COUNTY/. THE THUNDERSTORM PRODUCING THE HEAVY RAIN HAS BEEN DRIFTING SLOWLY SOUTHEAST AND INTENSIFYING THE PAST HALF HOUR. FLASH FLOODING IS EXPECTED IN ADJACENT PORTIONS OF NORTHERN WASHINGTON COUNTY. PERSONS WITHIN THE WARNING AREA THAT ARE NEAR DRY WASHES AND STREAMS NEED TO HEAD FOR HIGHER GROUND IMMEDIATELY. 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...OfR 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.
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 29, 3:05 PM MDT, 3 hours 35 minutes before
UTZALL-300400-
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
305 PM MDT FRI JUL 29 1994
...ANOTHER DAY OF THUNDERSTORMS OVER UTAH...
THUNDERSTORMS HAVE ONCE AGAIN DEVELOPED OVER PORTIONS OF UTAH THIS
AFTERNOON. AT 3 PM, LIGHTNING DETECTION CHARTS, SATELLITE IMAGERY, AND
RADAR SHOW MOST THUNDERSTORM ACTIVITY ALONG A LINE FROM JUST SOUTH OF
CEDAR CITY TO NEAR DUCHESNE. A STORM NEAR MILFORD PRODUCED 17
CLOUD-TO-GROUND STRIKES IN A THIRTY-MINUTE PERIOD. GENERAL STORM
MOVEMENT HAS BEEN TO THE EAST AND SOUTHEAST AT AROUND 10 MILES AN HOUR.
VERY LITTLE THUNDERSTORM ACTIVITY WAS NOTED OVER NORTHWEST UTAH THIS
AFTERNOON. HOWEVER, AN AREA OF STORMS ALONG THE NEVADA BORDER, JUST
EAST OF ELY, WILL MOVE INTO THE WEST DESERTS WITHIN THE NEXT HOUR OR
TWO. THUNDERSTORMS WERE ALSO DEVELOPING OVER THE EXTREME NORTHWEST
CORNER OF THE STATE.
BRIEF HEAVY RAIN SHOWERS, SMALL HAIL, GUSTS TO 45 MPH, AND DEADLY
LIGHTNING CAN BE EXPECTED WITH STRONGER THUNDERSTORMS.
SEEK INDOOR SHELTER IF THUNDERSTORMS APPROACH YOUR AREA. CAMPERS AND
BACK-PACKERS NEED TO BE ESPECIALLY ALERT AND KEEP AN EYE ON THE SKY.
LIGHTNING IS A PROVEN KILLER. DO NOT STAND UNDER TREES AND AVOID
EXPOSED RIDGES.
WEISHAAR/BAKER...2109ZSpecial weather statement, Jul 29, 3:10 PM MDT, 3 hours 30 minutes before
UTZALL-300400-
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
305 PM MDT FRI JUL 29 1994
...ANOTHER DAY OF THUNDERSTORMS OVER UTAH...
THUNDERSTORMS HAVE ONCE AGAIN DEVELOPED OVER PORTIONS OF UTAH THIS
AFTERNOON. AT 3 PM, LIGHTNING DETECTION CHARTS, SATELLITE IMAGERY, AND
RADAR SHOW MOST THUNDERSTORM ACTIVITY ALONG A LINE FROM JUST SOUTH OF
CEDAR CITY TO NEAR DUCHESNE. A STORM NEAR MILFORD PRODUCED 17
CLOUD-TO-GROUND STRIKES IN A THIRTY-MINUTE PERIOD. GENERAL STORM
MOVEMENT HAS BEEN TO THE EAST AND SOUTHEAST AT AROUND 10 MILES AN HOUR.
VERY LITTLE THUNDERSTORM ACTIVITY WAS NOTED OVER NORTHWEST UTAH THIS
AFTERNOON. HOWEVER, AN AREA OF STORMS ALONG THE NEVADA BORDER, JUST
EAST OF ELY, WILL MOVE INTO THE WEST DESERTS WITHIN THE NEXT HOUR OR
TWO. THUNDERSTORMS WERE ALSO DEVELOPING OVER THE EXTREME NORTHWEST
CORNER OF THE STATE.
BRIEF HEAVY RAIN SHOWERS, SMALL HAIL, GUSTS TO 45 MPH, AND DEADLY
LIGHTNING CAN BE EXPECTED WITH STRONGER THUNDERSTORMS.
SEEK INDOOR SHELTER IF THUNDERSTORMS APPROACH YOUR AREA. CAMPERS AND
BACK-PACKERS NEED TO BE ESPECIALLY ALERT AND KEEP AN EYE ON THE SKY.
LIGHTNING IS A PROVEN KILLER. DO NOT STAND UNDER TREES AND AVOID
EXPOSED RIDGES.
WEISHAAR/BAKER...2109ZSpecial weather statement, Jul 29, 5:25 PM MDT, 1 hour 15 minutes before
UTZALL-300100-
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
525 PM MDT FRI JUL 29 1994
...THUNDERSTORMS WITH HEAVY RAIN AND HAIL IN UTAH...
THUNDERSTORMS THAT DEVELOPED EARLY THIS AFTERNOON NOW COVER MUCH OF
THE BEEHIVE STATE. LATE AFTERNOON SATELLITE IMAGERY SHOWS MOST
MOUNTAIN LOCATIONS IN THUNDERSTORMS. ANOTHER AREA OF ORGANIZED
THUNDERSTORMS WERE MOVING EAST OUT OF NEVADA INTO UTAH'S WEST DESERT
REGION.
SOME OF THESE STORMS ARE PRODUCING HEAVY RAIN, HAIL AND GUSTY WINDS.
NEAR PAROWAN /IRON COUNTY/ SIX TENTHS /.60/ OF AN INCH FELL IN 15-20
MINUTES. HAIL ONE HALF INCH IN DIAMETER WAS ALSO REPORTED WITH THIS
STORM.
ANY OF THE THUNDERSTORMS IN UTAH WILL BE CAPABLE OF PRODUCING HAIL,
STRONG GUSTY WINDS, HEAVY RAIN, AND FREQUENT CLOUD-TO-GROUND
LIGHTNING OVER THE NEXT SEVERAL HOURS. THE BEST SAFETY PRECAUTION
FOR ALL OF THESE HAZARDS IS STAY INDOOR. IF YOU ARE CAMPING OR
HIKING NEAR SMALL STREAM OR DRY WASHES, IT WOULD BE WISE TO MOVE TO
HIGHER GROUND IN THE EVENT LOCAL HEAVY RAINFALL PRODUCES FLASH
FLOODING.
MCC...2325ZSpecial weather statement, Jul 29, 5:28 PM MDT, 1 hour 12 minutes before
UTZALL-300100-
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
525 PM MDT FRI JUL 29 1994
...THUNDERSTORMS WITH HEAVY RAIN AND HAIL IN UTAH...
THUNDERSTORMS THAT DEVELOPED EARLY THIS AFTERNOON NOW COVER MUCH OF
THE BEEHIVE STATE. LATE AFTERNOON SATELLITE IMAGERY SHOWS MOST
MOUNTAIN LOCATIONS IN THUNDERSTORMS. ANOTHER AREA OF ORGANIZED
THUNDERSTORMS WERE MOVING EAST OUT OF NEVADA INTO UTAH'S WEST DESERT
REGION.
SOME OF THESE STORMS ARE PRODUCING HEAVY RAIN, HAIL AND GUSTY WINDS.
NEAR PAROWAN /IRON COUNTY/ SIX TENTHS /.60/ OF AN INCH FELL IN 15-20
MINUTES. HAIL ONE HALF INCH IN DIAMETER WAS ALSO REPORTED WITH THIS
STORM.
ANY OF THE THUNDERSTORMS IN UTAH WILL BE CAPABLE OF PRODUCING HAIL,
STRONG GUSTY WINDS, HEAVY RAIN, AND FREQUENT CLOUD-TO-GROUND
LIGHTNING OVER THE NEXT SEVERAL HOURS. THE BEST SAFETY PRECAUTION
FOR ALL OF THESE HAZARDS IS STAY INDOOR. IF YOU ARE CAMPING OR
HIKING NEAR SMA@LL STREAM OR DRY WASHES, IT WOULD BE WISE TO MOVE TO
HIGHER GROUND IN THE EVENT LOCAL HEAVY RAINFALL PRODUCES FLASH
FLOODING.
MCC...2325ZNearby
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.