Alert archive / Minnesota / Tornado Warnings in 2002
Tornado Warning 31, NWS Grand Forks, ND
NWS Grand Forks, ND issued this tornado warning at Aug 28, 2002, 5:47 PM CDT for Wilkin County, Minnesota; Richland County, North Dakota. It was in force for 43 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
- Aug 28, 2002, 5:47 PM CDT (22:47 UTC)
- Expired
- Aug 28, 2002, 6:30 PM CDT
- In force
- 43 min
- Issued by
- NWS Grand Forks, ND
- Area
- Counties, with a storm outline in the text
Counties Wilkin County, MN, Richland County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 143 km from the middle of the area, began a volume at 22:49 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 28, 6:00 PM CDT | Hail 0.75 | Hankinson, ND |
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 |
|---|---|---|---|
| Aug 28, 5:35 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Aberdeen, SD (KABR), launched 12:00Z, 10.8 hours before the alert went out and 205 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
- 1363 J/kg
- Mixed-layer CIN
- -76 J/kg
- Mixed-layer LCL
- 969 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 99 m²/s²
- 0-3 km storm-relative helicity
- 123 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 27, 7:47 PM CDT | Severe Thunderstorm Warning | FGF | Marshall | 58 min |
| Aug 27, 11:18 PM CDT | Flash Flood Warning | FGF | Marshall | 6 hr |
| Aug 28, 1:15 PM CDT | Severe Thunderstorm Warning | FGF | Clearwater | 45 min |
| Aug 28, 1:44 PM CDT | Severe Thunderstorm Warning | FGF | Becker | 46 min |
| Aug 28, 2:00 PM CDT | Severe Thunderstorm Warning | FGF | Clearwater, Hubbard | 45 min |
| Aug 28, 4:30 PM CDT | Severe Thunderstorm Warning | FGF | Wilkin | 45 min |
| Aug 28, 4:44 PM CDT | Severe Thunderstorm Warning | FGF | Clay | 46 min |
| Aug 28, 5:01 PM CDT | Tornado Warning | FGF | Wilkin | 44 min |
| Aug 28, 5:09 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Mahnomen | 51 min |
| Aug 28, 5:27 PM CDT | Severe Thunderstorm Warning | FGF | Otter Tail | 48 min |
| Aug 28, 5:29 PM CDT | Severe Thunderstorm Warning | FGF | Clay | 46 min |
| Aug 28, 6:00 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Mahnomen | 60 min |
| Aug 28, 6:14 PM CDT | Flash Flood Warning | FGF | Wilkin | 6 hr |
| Aug 28, 6:16 PM CDT | Flash Flood Warning | FGF | Wilkin | 6 hr |
| Aug 28, 6:16 PM CDT | Severe Thunderstorm Warning | FGF | Clay | 59 min |
| Aug 28, 6:57 PM CDT | Flash Flood Warning | FGF | Becker, Clay, Mahnomen | 6 hr |
| Aug 27, 8:43 PM CDT | Severe Thunderstorm Warning | FGF | Pembina, Walsh | 47 min |
| Aug 27, 8:58 PM CDT | Severe Thunderstorm Warning | FGF | Towner | 47 min |
| Aug 27, 9:14 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier | 46 min |
| Aug 27, 9:35 PM CDT | Severe Thunderstorm Warning | FGF | Walsh | 40 min |
| Aug 27, 10:13 PM CDT | Severe Thunderstorm Warning | FGF | Walsh | 47 min |
| Aug 27, 10:29 PM CDT | Flash Flood Warning | FGF | Walsh | 4 hr |
| Aug 27, 10:43 PM CDT | Severe Thunderstorm Warning | FGF | Towner | 47 min |
| Aug 27, 10:57 PM CDT | Severe Thunderstorm Warning | FGF | Walsh | 48 min |
| Aug 28, 5:20 PM CDT | Severe Thunderstorm Warning | FGF | Steele, Traill | 40 min |
| Aug 28, 5:55 PM CDT | Severe Thunderstorm Warning | FGF | Cass | 35 min |
| Aug 28, 6:44 PM CDT | Severe Thunderstorm Warning | FGF | Cass | 61 min |
Nearby
Tornado Warnings in Minnesota, 2002Tornado Warnings in North Dakota, 2002Every tornado warning in 2002Tornadoes 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.