Alert archive / Utah / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 75, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this severe thunderstorm warning at Aug 12, 1997, 4:48 PM MDT for Juab County, Tooele County, Utah. It was in force for 62 min. 2 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
- Aug 12, 1997, 4:48 PM MDT (22:48 UTC)
- Expired
- Aug 12, 1997, 5:50 PM MDT
- In force
- 62 min
- Issued by
- NWS Salt Lake City, UT
- Area
- Whole counties
Counties Juab County, UT, Tooele County, UT
The radar
The Salt Lake City radar (KMTX), 139 km from the middle of the area, began a volume at 22:49 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 12, 5:50 PM MDT | Hail 0.75 | Dugway, UT | |
| Aug 12, 6:00 PM MDT | Thunderstorm Wind 57 | (Dpg)Michael Aaf Dug, 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.
The nearest sounding before it
Salt Lake City I, UT (KSLC), launched 12:00Z, 10.8 hours before the alert went out and 119 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
- 49 J/kg
- Mixed-layer CIN
- -152 J/kg
- Mixed-layer LCL
- 1661 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 28 m²/s²
- 0-3 km storm-relative helicity
- 66 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
392 WUUS1 KSLC 122251 RRA SVRSLC UTC023-045-122350- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SALT LAKE CITY UT 448 PM MDT TUE AUG 12 1997 THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY UT HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 550 PM MDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTHWESTERN UTAH ...NORTHERN JUAB COUNTY ...SOUTHERN TOOELE COUNTY AT 443 PM MDT...A SEVERE THUNDERSTORM WAS INDICATED BY DOPPLER RADAR AND SPOTTER REPORTS 65 MILES WEST OF EUREKA OR 35 MILES SOUTHWEST OF DUGWAY MOVING EAST AT ABOUT 20-25 MPH. SPOTTER REPORTS INDICATE WEAK SHORT LIVED FUNNEL CLOUDS WITH THIS STORM. THIS STORM IS EXPECTED TO REMAIN IN RURAL AREAS SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 58 MPH... DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS.
The office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 10:48 PM MDT | Severe Thunderstorm Warning | SLC | Kane | 62 min |
| Aug 12, 1:20 PM MDT | Severe Thunderstorm Warning | SLC | Emery | 35 min |
| Aug 12, 3:13 PM MDT | Severe Thunderstorm Warning | SLC | Garfield | 47 min |
| Aug 12, 3:59 PM MDT | Severe Thunderstorm Warning | SLC | Garfield | 46 min |
| Aug 12, 5:51 PM MDT | Severe Thunderstorm Warning | SLC | Tooele | 64 min |
Nearby
Severe Thunderstorm Warnings in Utah, 1997Every severe thunderstorm warning in 1997
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; radar from the NEXRAD Level II archive.