Alert archive / Utah / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 74, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this severe thunderstorm warning at Aug 25, 1998, 1:16 PM MDT for Davis County, Morgan County, Weber County, Utah. It was in force for 59 min. No storm report in the archive falls 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.
The facts
- Issued
- Aug 25, 1998, 1:16 PM MDT (19:16 UTC)
- Expired
- Aug 25, 1998, 2:15 PM MDT
- In force
- 59 min
- Issued by
- NWS Salt Lake City, UT
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Davis County, UT, Morgan County, UT, Weber County, UT
The radar
The Salt Lake City radar (KMTX), 49 km from the middle of the area, began a volume at 19:18 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 12:00Z, 7.3 hours before the alert went out and 23 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
- 2737 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 68 m²/s²
- 0-3 km storm-relative helicity
- 127 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
897
WUUS1 KSLC 251920 RRA
SVRSLC
UTC011-029-035-057-252015-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
116 PM MDT TUE AUG 25 1998
THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTH CENTRAL WEBER COUNTY IN UTAH
SOUTHWESTERN MORGAN COUNTY IN UTAH
DAVIS COUNTY IN UTAH
EXTREME NORTHWESTERN SALT LAKE COUNTY IN UTAH
INCLUDING KAYSVILLE...BOUNTIFUL...MORGAN...LAYTON AND OGDEN
* UNTIL 215 PM MDT
* AT 113 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM 13 MILES WEST OF NORTH SALT LAKE...OR ABOUT
15 MILES WEST OF BOUNTIFUL...MOVING NORTHEAST AT 20 MILES PER
HOUR.
* OTHER LOCATIONS IN THE WARNING INCLUDE CLEARFIELD...SOUTH
OGDEN...HILL AFB...PORTERSVILLE...NORTH SALT LAKE...SYRACUSE...
MOUNTAIN GREEN...ENTERPRISE...FARMINGTON...ROY AND CENTERVILLE
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG
BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...AND DEADLY
LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY
FROM WINDOWS UNTIL THE STORM HAS PASSED.
LAT...LON 4092 11228 4075 11202 4093 11160 4130 11190The office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 25, 12:34 PM MDT | Severe Thunderstorm Warning | SLC | Salt Lake, Tooele, Utah | 56 min |
| Aug 25, 1:16 PM MDT | Severe Thunderstorm Warning | SLC | Salt Lake | 59 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.