Alert archive / Utah / Severe Thunderstorm Warnings in 1992
Severe Thunderstorm Warning 35, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this severe thunderstorm warning at Sep 23, 1992, 7:34 PM MDT for Box Elder County, Tooele County, Utah. It was in force for 56 min. 3 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Sep 23, 1992, 7:34 PM MDT (01:34 UTC)
- Expired
- Sep 23, 1992, 8:30 PM MDT
- In force
- 56 min
- Issued by
- NWS Salt Lake City, UT
- Area
- Whole counties
Counties Box Elder County, UT, Tooele County, UT
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 23, 7:50 PM MDT | Thunderstorm Wind 75 | Box Elder, UT | |
| Sep 23, 8:25 PM MDT | Thunderstorm Wind 58 | Tooele, UT | |
| Sep 23, 8:34 PM MDT | Thunderstorm Wind 58 | Tooele, UT |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Salt Lake City I, UT (KSLC), launched 00:00Z, 1.6 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
- 108 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 3409 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 28 m²/s²
- 0-3 km storm-relative helicity
- 35 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, Sep 23, 4:51 PM MDT, 2 hours 43 minutes before
UTZ001-002-003-240100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 450 PM MDT WED SEP 23 1992 ...THUNDERSTORMS WITH GUSTY WINDS MOVING INTO NORTHWEST UTAH... RADAR AND LIGHTNING DETECTION EQUIPMENT INDICATES A LINE OF THUNDERSTORMS DEVELOPING OVER NORTHWEST UTAH. THE LEADING EDGE OF THE THUNDERSTORMS EXTENDS FROM NEAR MALAD CITY IDAHO...SOUTHWEST TO NEAR ELY NEVADA. THE ATMOSPHERE IS RELATIVELY DRY NEAR THE SURFACE. THIS INCREASES THE CHANCES FOR GUSTY MICROBURST WINDS WITH ANY OF THE THUNDERSTORMS. WIND GUSTS OF 40-50 MPH ARE POSSIBLE WITH SOME OF THE STRONGER THUNDERSTORMS ACROSS NORTHWEST UTAH THIS EVENING. THE LINE OF THUNDERSTORMS IS MOVING EAST AROUND 15 MPH. SOME OF THE THUNDERSTORMS AND ASSOCIATED GUSTY WINDS MAY MOVE INTO THE SALT LAKE VALLEY EARLY THIS EVENING. TWM...2250Z.
The office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 23, 6:11 PM MDT | Severe Thunderstorm Warning | SLC | Cache, Rich, Weber | 49 min |
| Sep 23, 6:11 PM MDT | Severe Thunderstorm Warning | SLC | Davis | 49 min |
| Sep 23, 6:34 PM MDT | Severe Thunderstorm Warning | SLC | Salt Lake | 41 min |
| Sep 23, 7:16 PM MDT | Severe Thunderstorm Warning | SLC | Morgan, Rich, Summit | 59 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.