Alert archive / Utah / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 8, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this severe thunderstorm warning at Aug 11, 1990, 7:00 PM MDT for Box Elder County, Tooele County, Utah. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Aug 11, 1990, 7:00 PM MDT (01:00 UTC)
- Expired
- Aug 11, 1990, 9:00 PM MDT
- In force
- 2 hr
- Issued by
- NWS Salt Lake City, UT
- Area
- Whole counties
Counties Box Elder County, UT, Tooele County, UT
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Salt Lake City I, UT (KSLC), launched 00:00Z, 1.0 hours before the alert went out and 104 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
- 127 J/kg
- Mixed-layer CIN
- -39 J/kg
- Mixed-layer LCL
- 3131 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 25 m²/s²
- 0-3 km storm-relative helicity
- 43 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm 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, 3:24 PM MDT, 3 hours 36 minutes before
UTZ001-003-010-120030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 321 PM MDT SAT AUG 11 1990 A MOIST AND UNSTABLE AIRMASS CONTINUES TO DOMINATE UTAHS WEATHER THIS AFTERNOON. RADAR AND SATELLITE PICTURES SHOW A COUPLE OF AREAS OF RAPID THUNDERSTORM DEVELOPMENT OVER NORTHWEST UTAH. ONE OF THESE AREAS WAS LOCATED ALONG THE UTAH/IDAHO BORDER NEAR INTERSTATE 15. SPOTTERS IN THE NORTHWEST HAVE REPORTED GUSTY WINDS ANSMALL HAIL WITH THIS STORM. PERSONS ENGAGED IN OUTDOOR ACTIVITIES IN EASTERN BOX ELDER AND CACHE COUNTIES SHOULD KEEP A WEATHER EYE OUT FOR THESE STORMS AS THEY MOVE INTO THE AREA. ANOTHER AREA OF RAPID THUNDERSTORM DEVELOPMENT WAS IN SOUTHERN *SALT LAKE COUNTY. FREQUENT LIGHTNING WAS REPORTED WITH THIS STORM. STRONG GUSTY WINDS... SMALL HAIL... FREQUENT LIGHTNING AND BRIEF HEAVY RAINFALL COULD OCCUR IN THESE LOCATIONS DURING THE NEXT COUPLE OF HOURS. DMC...2120Z
Special weather statement, Aug 11, 3:26 PM MDT, 3 hours 34 minutes before
UTZ001-003-010-120030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 321 PM MDT SAT AUG 11 1990 A MOIST AND UNSTABLE AIRMASS CONTINUES TO DOMINATE UTAHS WEATHER THIS AFTERNOON. RADAR AND SATELLITE PICTURES SHOW A COUPLE OF AREAS OF RAPID THUNDERSTORM DEVELOPMENT OVER NORTHWEST UTAH. ONE OF THESE AREAS WAS LOCATED ALONG THE UTAH/IDAHO BORDER NEAR INTERSTATE 15. SPOTTERS IN THE NORTHWEST HAVE REPORTED GUSTY WINDS AND SMALL HAIL WITH THIS STORM. PERSONS ENGAGED IN OUTDOOR ACTIVITIES IN EASTERN BOX ELDER AND CACHE COUNTIES SHOULD KEEP A WEATHER EYE OUT FOR THESE STORMS AS THEY MOVE INTO THE AREA. ANOTHER AREA OF RAPID THUNDERSTORM DEVELOPMENT WAS IN SOUTHERN 1SALT LAKE COUNTY. FREQUENT LIGHTNING WAS REPORTED WITH THIS STORM. STRONG GUSTY WINDS... SMALL HAIL... FREQUENT LIGHTNING AND BRIEF HEAVY RAINFALL COULD OCCUR IN THESE LOCATIONS DURING THE NEXT COUPLE OF HOURS. DMC...2120Z
Special weather statement, Aug 11, 6:12 PM MDT, 48 minutes before
UTZ001-002-003-010-011-120400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 615 PM MDT SAT AUG 11 1990 A MOIST AND UNSTABLE AIRMASS CONTINUES TO DOMINATE UTAHS WEATHER THIS EVENING. RADAR AND SATELLITE PICTURES SHOW SCATTERED AREAS OF THUNDERSTORM CONTINUING OVER THE STATE. SPOTTERS HAVE REPORTED SOME BRIEF LOCAL HEAVY RAIN.. STRONG WINDS AND SMALL HAIL. THE MOST ACTIVE AREA AT 6 PM WAS IN THE NORTHERN THIRD OF THE STATE BUT THERE STILL WERE A FEW IN OTHER AREAS. STRONG GUSTY WINDS... SMALL HAIL... FREQUENT LIGHTNING AND BRIEF HEAVY RAINFALL COULD OCCUR YET THE NEXT FEW HOURS.. ESPECIALLY IN THE NORTH. ACTIVITY SHOULD GENERALLY DECREASE SLOWLY DURING THE NIGHT. DJ...0009Z
Nearby
Severe Thunderstorm Warnings in Utah, 1990Every severe thunderstorm warning in 1990
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.