Alert archive / Utah / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 82, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this severe thunderstorm warning at Aug 26, 1998, 3:06 PM MDT for Box Elder County, Utah. It was in force for 54 min. 1 report came from inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.
The facts
- Issued
- Aug 26, 1998, 3:06 PM MDT (21:06 UTC)
- Expired
- Aug 26, 1998, 4:00 PM MDT
- In force
- 54 min
- Issued by
- NWS Salt Lake City, UT
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Box Elder County, UT
The radar
The Salt Lake City radar (KMTX), 59 km from the middle of the area, began a volume at 21:06 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 26, 4:00 PM MDT | Hail 0.75 | Thatcher, 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 130 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1925 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 124 m²/s²
- 0-3 km storm-relative helicity
- 136 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
603
WUUS1 KSLC 262109 RRA
SVRSLC
UTC003-262200-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
306 PM MDT WED AUG 26 1998
THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CENTRAL BOX ELDER COUNTY IN UTAH
INCLUDING SNOWVILLE
* UNTIL 400 PM MDT
* AT 259 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM 25 MILES NORTHWEST OF LAKESIDE...OR ABOUT 24
MILES SOUTH OF PARK VALLEY...MOVING EAST AT 25 MILES PER HOUR.
LARGE HAIL IS POSSIBLE WITH THIS SEVERE THUNDERSTORM. IF YOU ARE IN
THE PATH OF THE STORM...PUT YOUR CAR IN A GARAGE AND MOVE TO A
SUBSTANTIAL SHELTER.
REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN SALT LAKE CITY.
LAT...LON 4199 11325 4111 11322 4111 11248 4200 11256The office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 26, 1:25 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder | 65 min |
| Aug 26, 2:01 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder, Cache | 44 min |
| Aug 26, 2:14 PM MDT | Severe Thunderstorm Warning | SLC | Tooele | 46 min |
| Aug 26, 2:24 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder | 51 min |
| Aug 26, 2:41 PM MDT | Severe Thunderstorm Warning | SLC | Cache, Rich | 64 min |
| Aug 26, 3:57 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder, Cache | 63 min |
| Aug 26, 4:25 PM MDT | Severe Thunderstorm Warning | SLC | Davis, Morgan, Weber | 50 min |
| Aug 26, 4:29 PM MDT | Severe Thunderstorm Warning | SLC | Salt Lake, Utah, Wasatch | 31 min |
| Aug 26, 4:29 PM MDT | Severe Thunderstorm Warning | SLC | Summit | 31 min |
| Aug 26, 5:15 PM MDT | Severe Thunderstorm Warning | SLC | Davis, Morgan, Weber | 45 min |
| Aug 26, 5:15 PM MDT | Severe Thunderstorm Warning | SLC | Rich, Summit | 45 min |
| Aug 26, 5:27 PM MDT | Severe Thunderstorm Warning | SLC | Salt Lake, Tooele | 48 min |
| Aug 26, 5:41 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder | 64 min |
Nearby
Severe Thunderstorm Warnings in Utah, 1998Every severe thunderstorm warning in 1998
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.