Alert archive / Utah / Severe Thunderstorm Warnings in 1992
Severe Thunderstorm Warning 28, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this severe thunderstorm warning at Aug 21, 1992, 4:45 PM MDT for Salt Lake County, Utah County, Utah. It was in force for 45 min.
The area
The counties it named.
The facts
- Issued
- Aug 21, 1992, 4:45 PM MDT (22:45 UTC)
- Expired
- Aug 21, 1992, 5:30 PM MDT
- In force
- 45 min
- Issued by
- NWS Salt Lake City, UT
- Area
- Whole counties
Counties Salt Lake County, UT, Utah County, UT
The nearest sounding before it
Salt Lake City I, UT (KSLC), launched 12:00Z, 10.8 hours before the alert went out and 44 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
- 42 J/kg
- Mixed-layer CIN
- -299 J/kg
- Mixed-layer LCL
- 3224 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 147 m²/s²
- 0-3 km storm-relative helicity
- 163 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 212247 SVRSLC UTC049-035-212330- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING FOR HIGH WINDS NATIONAL WEATHER SERVICE SALT LAKE CITY UT 445 PM MDT FRI AUG 21 1992 THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A SEVERE THUNDERSTORM WARNING FOR HIGH WINDS EFFECTIVE UNTIL 600 PM MDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTHERN UTAH ...NORTHERN UTAH COUNTY AND SALT LAKE COUNTY... HIGH BASED THUNDERSTORMS IN NORTHERN UTAH COUNTY AND SOUTHERN SALT LAKE COUNTY HAVE PRODUCED OUTFLOW WINDS THIS AFTERNOON THAT HAVE COMBINED WITH THE PREFRONTAL SURFACE WINDS TO PRODUCE AREAS OF HIGH WINDS AND REDUCED VISIBILITIES IN BLOWING DUST. AT 425 PM...GUSTS TO 76 MPH WERE REPORTED ON THE CAMPUS OF BYU...WITH VISIBILITIES REDUCED BELOW A MILE. AS OF 430 PM...BLOWING DUST HAS REPORTEDLY REDUCED VISIBILITIES TO NEAR ZERO IN SOUTHERN SALT LAKE COUNTY...AND WAS MOVING NORTHWARD ACROSS THE SALT LAKE VALLEY. PER0SONS IN THE WARNING AREA SHOULD BE AWARE OF THE THREAT OF STRONG GUSTY WINDS IN EXCESS OF 60 MPH...REDUCED VISIBILITIES IN BLOWING DUST...AND DEADLY LIGHTNING THROUGH THE REMAINDER OF THIS AFTERNOON. PRINGLE...2245Z
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 21, 3:31 PM MDT, 1 hour 14 minutes before
UTZALL-220400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 330 PM MDT FRI AUG 21 1992 ...LAKE WIND ADVISORY FOR WESTERN UTAH LAKES THE REST OF THIS AFTERNOON AND EVENING... ...ACTIVE THUNDERSTORMS HAVE DEVELOPED OVER UTAH... STRONG SOUTHERLY WINDS OF 20 TO 30 MPH...WITH A FEW HIGHER GUSTS... ARE CONTINUING ACROSS WESTERN UTAH THIS AFTERNOON. THUS THE LAKE WIND ADVISORY ISSUED THIS MORNING WILL CONTINUE INTO THIS EVENING FOR WESTERN UTAHS LAKES...INCLUDING STRAWBERRY RESERVOIR AND BEAR LAKE. A COLD UPPER TROUGH IS DEVELOPING ALONG THE WEST COAST TODAY... WITH A STRONG SOUTHWEST FLOW OVER UTAH. AN ASSOCIATED COLD FRONT IS MOVING SLOWLY TOWARDS NORTHWEST UTAH...CAUSING STRONG SOUTHERLY WINDS AHEAD OF IT. THE FRONT WILL PUSH INTO NORTHERN UTAH SATURDAY AFTERNOON WITH GUSTY SHIFTING WINDS. AS THE FRONT SLOWLY MOVES ACROSS THE STATE ON SATURDAY...SOUTHERLY WINDS WILL INCREASE OVER EASTERN UTAH AS WELL...AND A LAKE WIND ADVISORY WILL PROBABLY BE NEEDED ON SATURDAY. BOATERS ARE REMINDED THAT STRONG WINDS CAN PRODUCE LARGE WAVES AND ROUGH WATERS MAKING SMALL BOATS DIFFICULT TO HANDLE. BE PREPARED FOR STRONG AND GUSTY WINDS WHEN IN OPEN WATER...AND SEEK SAFE HARBOR IF CONDITIONS BECOME SEVERE. ALSO...STRONG THUNDERSTORMS HAVE DEVELOPED ACROSS MUCH OF CENTRAL AND SOUTHERN UTAH EARLY THIS AFTERNOON...AND WERE BEGINNING TO FORM ALONG THE WASATCH FRONT BY 3PM. THUNDERSTORMS IN SOUTHERN AND EASTERN UTAH HAVE THE POTENTIAL FOR LOCALLY HEAVY RAIN...AND STORMS ANYWHERE IN THE STATE WILL CONTAIN STRONG GUSTY WINDS AND FREQUENT LIGHTNING. IF YOU ARE PLANNING OUTDOOR ACTIVITIES THIS AFTERNOON AND EVENING... KEEP AN EYE ON THE WEATHER SITUATION. AVOID STANDING UNDER TALL TREES...SEEK SHELTER INSIDE A BUILDING OR VEHICLE INSTEAD. ALSO... ESPECIALLY IN SOUTHERN AND EASTERN UTAH...AVOID NORMALLY DRY WASHES THAT CAN FILL RAPIDLY WHEN HEAVY RAINS ARE NEARBY. CCS/PJW...2130Z
The office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 21, 12:22 AM MDT | Severe Thunderstorm Warning | SLC | Salt Lake | 53 min |
Nearby
Severe Thunderstorm Warnings in Utah, 1992Every severe thunderstorm 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.