Alert archive / Minnesota / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 321, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Sep 25, 1998, 11:48 PM CDT for Benton County, Mille Lacs County, Minnesota. It was in force for 62 min. 4 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
- Sep 25, 1998, 11:48 PM CDT (04:48 UTC)
- Expired
- Sep 26, 1998, 12:50 AM CDT
- In force
- 62 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
Counties Benton County, MN, Mille Lacs County, MN
The radar
The Minneapolis radar (KMPX), 110 km from the middle of the area, began a volume at 04:50 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 |
|---|---|---|---|
| Sep 26, 12:14 AM CDT | Hail 2.5 | Milaca, MN | |
| Sep 26, 12:15 AM CDT | Hail 3 | Milaca, MN | Roof damage to multiple farmsteads. Broken windows. At least 5 automobiles totalled. Many vehicles with hail damage. |
| Sep 26, 12:18 AM CDT | Thunderstorm Wind 65 | Isle, MN | Dock damaged just north of Isle. Estimated windspeed. |
| Sep 26, 12:18 AM CDT | Thunderstorm Wind 65 | Isle, MN | Trees blown down at Sunset Bay resort. RV blown over. Boats tossed. Estimated windspeed. |
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
Minneapolis, MN (KMPX), launched 00:00Z, 4.8 hours before the alert went out and 109 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
- 1859 m above ground
- 0-6 km bulk shear
- 74 kt
- 0-1 km storm-relative helicity
- 247 m²/s²
- 0-3 km storm-relative helicity
- 276 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
931
WUUS1 KMSP 260451 RRA
SVRMSP
MNC009-095-260550-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1148 PM CDT FRI SEP 25 1998
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES/CHANHASSEN HAS
ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
BENTON COUNTY IN CENTRAL MINNESOTA
MILLE LACS COUNTY IN CENTRAL MINNESOTA
* UNTIL 1250 AM CDT
* AT 1148 PM CDT...DOPPLER RADAR INDICATED A SEVERE STORM WITH LARGE
HAIL AND DAMAGING WINDS NEAR BUCKMAN OR 13 SOUTHEAST OF LITTLE
FALLS. THE STORMS WERE MOVING EAST AT 35 MPH.
* SOME LOCATIONS AFFECTED
GILMAN
MILACA
FOLEY
DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY
BUILDING AND STAY AWAY FROM WINDOWS.
SCOTTThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 25, 10:20 PM CDT | Severe Thunderstorm Warning | MPX | Douglas, Todd | 65 min |
| Sep 25, 10:59 PM CDT | Severe Thunderstorm Warning | MPX | Morrison | 61 min |
| Sep 26, 12:12 AM CDT | Tornado Warning | MPX | Isanti, Kanabec | 33 min |
| Sep 26, 12:26 AM CDT | Severe Thunderstorm Warning | MPX | Chisago | 34 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 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.