Alert archive / Minnesota / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 263, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 26, 2002, 5:59 PM CDT for Polk County, Minnesota. It was in force for 46 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
- Aug 26, 2002, 5:59 PM CDT (22:59 UTC)
- Expired
- Aug 26, 2002, 6:45 PM CDT
- In force
- 46 min
- Issued by
- NWS Grand Forks, ND
- Area
- Counties, with a storm outline in the text
County Polk County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 112 km from the middle of the area, began a volume at 22:58 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 26, 6:20 PM CDT | Hail 1.75 | Fosston, 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, 11.0 hours before the alert went out and 217 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
- 42 J/kg
- Mixed-layer CIN
- -300 J/kg
- Mixed-layer LCL
- 1460 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 69 m²/s²
- 0-3 km storm-relative helicity
- 86 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
036
WUUS53 KFGF 262259
SVRFAR
MNC119-262345-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
559 PM CDT MON AUG 26 2002
THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHEASTERN POLK COUNTY IN NORTHWEST MINNESOTA.
* UNTIL 645 PM CDT.
* AT 553 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM 5 MILES SOUTH OF MCINTOSH...OR ABOUT 40 MILES
SOUTH OF THIEF RIVER FALLS...MOVEMENT WAS TO THE EAST AT 25 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
FOSSTON AT 605 PM.
REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCE WARNING.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM MONDAY
EVENING FOR EASTERN NORTH DAKOTA.
LAT...LON 4768 9591 4756 9612 4753 9594 4753 9559
4762 9558
8
NNNNThe office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 26, 3:08 PM CDT | Severe Thunderstorm Warning | FGF | Polk | 42 min |
| Aug 26, 3:41 PM CDT | Tornado Warning | FGF | Polk | 49 min |
| Aug 26, 3:46 PM CDT | Severe Thunderstorm Warning | FGF | Pennington, Red Lake | 44 min |
| Aug 26, 3:51 PM CDT | Tornado Warning | FGF | Pennington, Red Lake | 39 min |
| Aug 26, 4:30 PM CDT | Tornado Warning | FGF | Polk, Red Lake | 45 min |
| Aug 26, 4:31 PM CDT | Severe Thunderstorm Warning | FGF | Pennington | 44 min |
| Aug 26, 4:33 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Otter Tail | 42 min |
| Aug 26, 4:50 PM CDT | Severe Thunderstorm Warning | FGF | Roseau | 40 min |
| Aug 26, 5:04 PM CDT | Flash Flood Warning | FGF | Red Lake | 4 hr |
| Aug 26, 5:16 PM CDT | Tornado Warning | FGF | Polk | 44 min |
| Aug 26, 5:17 PM CDT | Severe Thunderstorm Warning | FGF | Red Lake | 43 min |
| Aug 26, 5:50 PM CDT | Severe Thunderstorm Warning | FGF | Mahnomen, Norman | 55 min |
| Aug 26, 6:26 PM CDT | Severe Thunderstorm Warning | FGF | Lake of the Woods | 49 min |
| Aug 26, 6:44 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Clay, Mahnomen, Norman | 61 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.