Alert archive / Utah / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 52, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this severe thunderstorm warning at Jul 18, 1997, 6:37 PM MDT for Rich County, Summit County, Utah. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 18, 1997, 6:37 PM MDT (00:37 UTC)
- Expired
- Jul 18, 1997, 7:10 PM MDT
- In force
- 33 min
- Issued by
- NWS Salt Lake City, UT
- Area
- Whole counties
Counties Rich County, UT, Summit County, UT
The radar
The Salt Lake City radar (KMTX), 113 km from the middle of the area, began a volume at 00:36 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.
The nearest sounding before it
Salt Lake City I, UT (KSLC), launched 00:00Z, 0.6 hours before the alert went out and 85 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
- 669 J/kg
- Mixed-layer CIN
- -124 J/kg
- Mixed-layer LCL
- 2303 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 67 m²/s²
- 0-3 km storm-relative helicity
- 155 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSLC 190041 RRA SVRSLC UTC033-043-190110- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SALT LAKE CITY UT 637 PM MDT FRI JUL 18 1997 THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY UT HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 710 PM MDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTHWESTERN UTAH ...SOUTHERN RICH COUNTY IN NORTHERN UTAH ...NORTHWESTERN SUMMIT COUNTY AT 634 PM MDT...A SEVERE THUNDERSTORM WAS INDICATED BY DOPPLER RADAR 39 MILES SOUTH OF RANDOLPH OR 9 MILES SOUTHWEST OF WAHSATCH MOVING NORTH AT 20 MPH. THIS STORM CAN BE EXPECTED TO CROSS I-80 AT 640 AND IN IN THE VICINITY OF... WAHSATCH AT AROUND 645 PM MDT WYUTA AT AROUND 700 PM MDT THIS STORM MAY PRODUCE STRONG GUSTY WIND...LARGE HAIL...AND FREQUENT LIGHTNING. TAKE COVER WHEN THREATENING WEATHER APPROACHES.
The office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 19, 10:26 AM MDT | Flash Flood Warning | SLC | San Juan, Wayne | 59 min |
| Jul 19, 10:26 AM MDT | Severe Thunderstorm Warning | SLC | San Juan, Wayne | 59 min |
| Jul 19, 1:11 PM MDT | Flash Flood Warning | SLC | Emery | 44 min |
| Jul 19, 1:11 PM MDT | Severe Thunderstorm Warning | SLC | Emery | 44 min |
| Jul 19, 1:20 PM MDT | Severe Thunderstorm Warning | SLC | Duchesne | 50 min |
| Jul 19, 1:56 PM MDT | Flash Flood Warning | SLC | Emery | 59 min |
| Jul 19, 1:56 PM MDT | Severe Thunderstorm Warning | SLC | Emery | 59 min |
| Jul 19, 3:18 PM MDT | Flash Flood Warning | SLC | Wayne | 62 min |
| Jul 19, 3:39 PM MDT | Flash Flood Warning | SLC | San Juan, Wayne | 46 min |
| Jul 19, 4:25 PM MDT | Flash Flood Warning | SLC | San Juan, Wayne | 35 min |
| Jul 19, 4:25 PM MDT | Severe Thunderstorm Warning | SLC | San Juan, Wayne | 35 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.