Alert archive / Minnesota / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 48, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 9, 2002, 3:31 AM CDT for Mahnomen County, Norman County, Minnesota. It was in force for 44 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
- Jun 9, 2002, 3:31 AM CDT (08:31 UTC)
- Expired
- Jun 9, 2002, 4:15 AM CDT
- In force
- 44 min
- Issued by
- NWS Grand Forks, ND
- Area
- Counties, with a storm outline in the text
Counties Mahnomen County, MN, Norman County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 90 km from the middle of the area, began a volume at 08:30 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, 4:00 AM CDT | Tornado F1 | Ada, MN | A roof was torn off a farm building and scattered in nearby trees. |
| Jun 9, 4:00 AM CDT | Thunderstorm Wind | Gary, MN | A church steeple was blown off. |
| Jun 9, 4:15 AM CDT | Thunderstorm Wind 70 E | Mahnomen, MN | Windows were broken and a shed door was torn off. |
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 00:00Z, 8.5 hours before the alert went out and 249 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
- 2278 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 68 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KFGF 090831 SVRFAR MNC087-107-090915- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 330 AM CDT SUN JUN 9 2002 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN MAHNOMEN COUNTY IN NORTHWEST MINNESOTA AND NORTHEASTERN NORMAN COUNTY IN NORTHWEST MINNESOTA. * UNTIL 415 AM CDT. * AT 325 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 3 MILES WEST OF GARY...OR ABOUT 42 MILES NORTHEAST OF FARGO...MOVEMENT WAS TO THE EAST AT 20 MPH. * AT 325 AM...SPOTTERS REPORTED WIND DAMAGE 5 MILES NORTHEAST OF ADA AND 8 TO 10 DIAMETER TREES DOWN. * THE SEVERE THUNDERSTORM WILL BE NEAR... RANUM AT 345 AM... WAUKON AT 350 AM... FAITH AT 355 AM AND MAHNOMEN AT 410 AM. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 AM SUNDAY MORNING FOR EASTERN NORTH DAKOTA. LAT...LON 4748 9641 4730 9642 4725 9576 4749 9574 06 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, 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, 7:47 AM CDT | Severe Thunderstorm Warning | FGF | Clearwater | 43 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.