Alert archive / Minnesota / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 55, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 9, 2002, 7:47 AM CDT for Clearwater County, Minnesota. It was in force for 43 min. 1 report 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
- Jun 9, 2002, 7:47 AM CDT (12:47 UTC)
- Expired
- Jun 9, 2002, 8:30 AM CDT
- In force
- 43 min
- Issued by
- NWS Grand Forks, ND
- Area
- Counties, with a storm outline in the text
County Clearwater County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 146 km from the middle of the area, began a volume at 12:47 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 |
|---|---|---|---|
| Jun 9, 8:15 AM CDT | Hail 0.75 | Zerkel, MN |
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
International Fa, MN (KINL), launched 12:00Z, 0.8 hours before the alert went out and 209 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
- 7 J/kg
- Mixed-layer CIN
- -164 J/kg
- Mixed-layer LCL
- 631 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 131 m²/s²
- 0-3 km storm-relative helicity
- 175 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KFGF 091247 SVRFAR MNC029-091330- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 747 AM CDT SUN JUN 9 2002 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CLEARWATER COUNTY IN NORTHWEST MINNESOTA. * UNTIL 830 AM CDT. * AT 742 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 3 MILES NORTHWEST OF LONG LOST LAKE...OR ABOUT 33 MILES SOUTHWEST OF BEMIDJI...MOVEMENT WAS TO THE EAST AT 25 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... ZERKEL AT 750 AM... UPPER RICE LAKE AT 800 AM AND LAKE ITASCA AT 810 AM. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. LAT...LON 4735 9553 4717 9550 4719 9520 4759 9525 8 NNNN
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 8, 10:59 PM CDT | Severe Thunderstorm Warning | FGF | Norman | 46 min |
| Jun 9, 12:07 AM CDT | Severe Thunderstorm Warning | FGF | Norman | 38 min |
| Jun 9, 12:37 AM CDT | Severe Thunderstorm Warning | FGF | Polk | 38 min |
| Jun 9, 1:30 AM CDT | Severe Thunderstorm Warning | FGF | Becker, Mahnomen | 45 min |
| Jun 9, 2:36 AM CDT | Flash Flood Warning | FGF | Polk | 6 hr |
| Jun 9, 3:31 AM CDT | Severe Thunderstorm Warning | FGF | Mahnomen, Norman | 44 min |
| Jun 9, 4:14 AM CDT | Severe Thunderstorm Warning | FGF | Becker, Clay, Mahnomen, Norman | 46 min |
| Jun 9, 4:16 AM CDT | Flash Flood Warning | FGF | Norman | 6 hr |
| Jun 9, 4:57 AM CDT | Severe Thunderstorm Warning | FGF | Becker, Clay, Mahnomen, Norman | 63 min |
| Jun 9, 5:04 AM CDT | Flash Flood Warning | FGF | Mahnomen | 6 hr |
| Jun 9, 5:23 AM CDT | Flash Flood Warning | FGF | Pennington, Polk, Red Lake | 6 hr |
| Jun 9, 5:53 AM CDT | Tornado Warning | FGF | Becker, Clay | 37 min |
| Jun 9, 5:57 AM CDT | Severe Thunderstorm Warning | FGF | Mahnomen, Norman | 63 min |
| Jun 9, 6:07 AM CDT | Flash Flood Warning | FGF | Becker, Clay | 6 hr |
| Jun 9, 6:29 AM CDT | Severe Thunderstorm Warning | FGF | Becker, Clay | 61 min |
| Jun 9, 7:35 AM CDT | Severe Thunderstorm Warning | FGF | Becker | 55 min |
| Jun 9, 7:53 AM CDT | Severe Thunderstorm Warning | FGF | Beltrami, Hubbard | 67 min |
| Jun 9, 7:56 AM CDT | Flash Flood Warning | FGF | Clearwater | 4 hr |
| Jun 9, 8:28 AM CDT | Severe Thunderstorm Warning | FGF | Becker, Clearwater | 62 min |
| Jun 9, 10:51 AM CDT | Severe Thunderstorm Warning | FGF | Polk | 39 min |
| Jun 9, 11:33 AM CDT | Flash Flood Warning | FGF | Pennington, Polk, Red Lake | 6 hr |
| Jun 9, 1:48 PM CDT | Severe Thunderstorm Warning | FGF | Polk | 42 min |
| Jun 9, 5:25 PM CDT | Flash Flood Warning | FGF | Marshall, Pennington, Red Lake | 4 hr |
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.