Alert archive / Utah / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 80, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this severe thunderstorm warning at Aug 17, 1997, 3:08 PM MDT for Utah County, Wasatch County, Utah. It was in force for 42 min. 1 report 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 17, 1997, 3:08 PM MDT (21:08 UTC)
- Expired
- Aug 17, 1997, 3:50 PM MDT
- In force
- 42 min
- Issued by
- NWS Salt Lake City, UT
- Area
- Whole counties
Counties Utah County, UT, Wasatch County, UT
The radar
The Salt Lake City radar (KMTX), 144 km from the middle of the area, began a volume at 21:10 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 17, 3:10 PM MDT | Hail 0.75 | American Fork, 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, 9.1 hours before the alert went out and 74 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
- 12 J/kg
- Mixed-layer CIN
- -401 J/kg
- Mixed-layer LCL
- 2609 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 78 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 172113 RRA
SVRSLC
UTC043-049-051-172150-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
308 PM MDT SUN AUG 17 1997
THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY UT HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 350 PM MDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
IN NORTHWESTERN UTAH
...NORTHERN UTAH COUNTY...WESTERN SUMMITT COUNTY...AND
WESTERN WASATCH COUNTY
AT 300 PM MDT...SEVERE THUNDERSTORMS WERE INDICATED BY DOPPLER
RADAR 10 MILES NORTHWEST OF PROVO...AND 5 MILES EAST OF SALT LAKE
CITY...MOVING NORTHEAST AT ABOUT 12 MPH.
BRIEF HEAVY RAIN...GUSTY WINDS TO 60 MPH...AND HAIL UP TO ONE INCH
CAN BE EXPECTED WITH THIS STORM
PEOPLE IN THE PATH OF THIS STORM SHOULD REMAIN INDOORS TO AVOID
THESE HAZARDS.The office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 2:15 PM MDT | Severe Thunderstorm Warning | SLC | Salt Lake | 45 min |
| Aug 17, 3:08 PM MDT | Severe Thunderstorm Warning | SLC | Summit | 42 min |
| Aug 17, 3:26 PM MDT | Flash Flood Warning | SLC | Utah, Wasatch | 44 min |
| Aug 17, 3:49 PM MDT | Severe Thunderstorm Warning | SLC | Tooele | 41 min |
| Aug 17, 5:43 PM MDT | Severe Thunderstorm Warning | SLC | Tooele, Utah | 42 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.