Alert archive / Minnesota / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 203, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 28, 2002, 3:39 PM CDT for Redwood County, Minnesota. It was in force for 51 min. 3 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 28, 2002, 3:39 PM CDT (20:39 UTC)
- Expired
- Jul 28, 2002, 4:30 PM CDT
- In force
- 51 min
- Issued by
- NWS Twin Cities, MN
- Area
- Counties, with a storm outline in the text
County Redwood County, MN
The radar
The Sioux Falls radar (KFSD), 140 km from the middle of the area, began a volume at 20:41 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 28, 4:14 PM CDT | Hail 1 | Walnut Grove, MN | |
| Jul 28, 4:25 PM CDT | Thunderstorm Wind 52 E | Walnut Grove, MN | Scattered trees down. |
| Jul 28, 4:30 PM CDT | Thunderstorm Wind 55 E | Revere, MN | Scattered trees and power lines down. Corn flattened. |
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 28, 1:00 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 8.7 hours before the alert went out and 149 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
- 1056 J/kg
- Mixed-layer CIN
- -124 J/kg
- Mixed-layer LCL
- 1511 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 71 m²/s²
- 0-3 km storm-relative helicity
- 110 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
044 WUUS53 KMPX 282039 SVRMSP MNC127-282130- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 338 PM CDT SUN JUL 28 2002 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... REDWOOD COUNTY IN SOUTHWEST MINNESOTA * UNTIL 430 PM CDT * AT 338 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE HAIL 14 MILES SOUTHWEST OF MILROY...OR ABOUT 12 MILES SOUTH OF MARSHALL...MOVING EAST AT 45 MPH. * SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE... MILROY. WALNUT GROVE. LUCKAN. LAMBERTON. WANDA. WABASSO. THIS IS A DANGEROUS STORM WITH LARGE HAIL...STAY INDOORS AWAY FROM WINDOWS. LAT...LON 4446 9558 4422 9557 4421 9515 4444 9488 RAH/SEB
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 28, 4:07 PM CDT | Severe Thunderstorm Warning | MPX | Le Sueur | 38 min |
| Jul 28, 4:13 PM CDT | Severe Thunderstorm Warning | MPX | Nicollet, Sibley | 47 min |
| Jul 28, 4:17 PM CDT | Severe Thunderstorm Warning | MPX | Renville | 58 min |
| Jul 28, 4:28 PM CDT | Severe Thunderstorm Warning | MPX | Redwood | 32 min |
| Jul 28, 4:32 PM CDT | Severe Thunderstorm Warning | MPX | Rice | 43 min |
| Jul 28, 4:58 PM CDT | Severe Thunderstorm Warning | MPX | Scott | 47 min |
| Jul 28, 5:21 PM CDT | Severe Thunderstorm Warning | MPX | Blue Earth, Nicollet | 54 min |
| Jul 28, 5:22 PM CDT | Severe Thunderstorm Warning | MPX | Dakota | 38 min |
| Jul 28, 5:41 PM CDT | Tornado Warning | MPX | Nicollet | 34 min |
| Jul 28, 5:43 PM CDT | Flash Flood Warning | MPX | McLeod, Sibley | 2 hr |
| Jul 28, 5:43 PM CDT | Severe Thunderstorm Warning | MPX | Goodhue | 47 min |
| Jul 28, 5:45 PM CDT | Severe Thunderstorm Warning | MPX | McLeod, Sibley | 45 min |
| Jul 28, 5:46 PM CDT | Severe Thunderstorm Warning | MPX | Scott | 44 min |
| Jul 28, 5:49 PM CDT | Tornado Warning | MPX | Goodhue | 26 min |
| Jul 28, 6:06 PM CDT | Flash Flood Warning | MPX | Anoka, Carver, Dakota, Hennepin, Ramsey, Scott and 1 more | 3 hr |
| Jul 28, 6:11 PM CDT | Severe Thunderstorm Warning | MPX | Waseca | 49 min |
| Jul 28, 6:23 PM CDT | Severe Thunderstorm Warning | MPX | Rice | 52 min |
| Jul 28, 6:34 PM CDT | Severe Thunderstorm Warning | MPX | Steele | 41 min |
| Jul 28, 6:39 PM CDT | Tornado Warning | MPX | Rice | 36 min |
| Jul 28, 6:50 PM CDT | Tornado Warning | MPX | Goodhue | 25 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2002Every severe thunderstorm warning in 2002
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.