Alert archive / Minnesota / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 129, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 13, 1997, 8:21 PM CDT for Freeborn County, Minnesota. It was in force for 59 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
- Jul 13, 1997, 8:21 PM CDT (01:21 UTC)
- Expired
- Jul 13, 1997, 9:20 PM CDT
- In force
- 59 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
County Freeborn County, MN
The radar
The Minneapolis radar (KMPX), 132 km from the middle of the area, began a volume at 01:21 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 |
|---|---|---|---|
| Jul 13, 8:43 PM CDT | Hail 2 | Albert Lea, MN | Large tree branches also blown down. |
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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 13, 7:30 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 1.4 hours before the alert went out and 326 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
- 2601 J/kg
- Mixed-layer CIN
- -100 J/kg
- Mixed-layer LCL
- 1204 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 64 m²/s²
- 0-3 km storm-relative helicity
- 204 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.6
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KMSP 140123 RRA
SVRMSP
MNC047-131-147-161-140220-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
821 PM CDT SUN JUL 13 1997
* SEVERE THUNDERSTORM WARNING FOR
FREEBORN COUNTY - SOUTH CENTRAL MINNESOTA
RICE COUNTY - SOUTH CENTRAL MINNESOTA
STEELE COUNTY - SOUTH CENTRAL MINNESOTA
WASECA COUNTY - SOUTH CENTRAL MINNESOTA
* UNTIL 920 PM CDT
* SOME LOCATIONS AFFECTED
FAIRIBAULT
OWATONNA
WASECA
ALBERT LEA
* AT 820 PM CDT DOPPLER RADAR INDICATED A LINE OF SEVERE STORMS
FROM WATERVILLE TO WASECA TO 15 MILES WEST OF ALBERT LEA. THE
STORMS WERE MOVING EAST AT 45 MPH.
THESE ARE DANGEROUS STORMS...WITH DAMAGINGN WINDS. STAY
INDOORS AWAY FROM WINDOWS.
MILLERThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 7:38 PM CDT | Severe Thunderstorm Warning | MPX | Scott | 52 min |
| Jul 13, 7:46 PM CDT | Tornado Warning | MPX | Scott, Sibley | 29 min |
| Jul 13, 7:48 PM CDT | Severe Thunderstorm Warning | MPX | Dakota, Hennepin | 42 min |
| Jul 13, 7:48 PM CDT | Severe Thunderstorm Warning | MPX | Carver | 42 min |
| Jul 13, 8:17 PM CDT | Severe Thunderstorm Warning | MPX | Anoka, Ramsey, Washington | 58 min |
| Jul 13, 8:21 PM CDT | Severe Thunderstorm Warning | MPX | Rice, Steele, Waseca | 59 min |
| Jul 13, 8:31 PM CDT | Severe Thunderstorm Warning | MPX | Dakota, Hennepin | 44 min |
| Jul 13, 9:11 PM CDT | Severe Thunderstorm Warning | MPX | Goodhue | 49 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 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.