Alert archive / Minnesota / Tornado Warnings in 2004
Tornado Warning 49, NWS Grand Forks, ND
NWS Grand Forks, ND issued this tornado warning at Aug 2, 2004, 3:46 AM CDT for Otter Tail County, Minnesota. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 2, 2004, 3:46 AM CDT (08:46 UTC)
- Expired
- Aug 2, 2004, 4:30 AM CDT
- In force
- 44 min
- Issued by
- NWS Grand Forks, ND
- Area
- Counties, with a storm outline in the text
County Otter Tail County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 177 km from the middle of the area, began a volume at 08:46 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.
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 2, 3:00 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 8.8 hours before the alert went out and 237 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
- 2637 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 947 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 31 m²/s²
- 0-3 km storm-relative helicity
- 105 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 1.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS53 KFGF 020846 TORFGF MNC111-020930- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 345 AM CDT MON AUG 2 2004 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * TORNADO WARNING FOR... OTTER TAIL COUNTY IN WEST CENTRAL MINNESOTA * UNTIL 430 AM CDT. * AT 341 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM WITH STRONG ROTATION 6 MILES NORTHWEST OF UNDERWOOD...OR ABOUT 7 MILES NORTHEAST OF FERGUS FALLS...MOVING TO THE SOUTHEAST AT 25 MPH. * THE TORNADO WILL BE NEAR... OTTERTAIL LAKE AT 350 AM... OTTERTAIL AT 355 AM... BATTLE LAKE AT 400 AM AND CLITHERALL AT 410 AM. THIS IS A DANGEROUS STORM. IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES FOR A STURDY BUILDING. LAT...LON 4652 9553 4640 9626 4614 9619 4613 9535 $$ GV
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 2:53 AM CDT | Tornado Warning | FGF | Wilkin | 37 min |
| Aug 2, 3:04 AM CDT | Tornado Warning | FGF | Otter Tail | 41 min |
| Aug 2, 3:30 AM CDT | Severe Thunderstorm Warning | FGF | Wilkin | 30 min |
| Aug 2, 4:30 AM CDT | Severe Thunderstorm Warning | FGF | Otter Tail | 30 min |
| Aug 2, 6:14 AM CDT | Severe Thunderstorm Warning | FGF | Otter Tail | 46 min |
| Aug 2, 6:36 AM CDT | Severe Thunderstorm Warning | FGF | Grant | 24 min |
Nearby
Tornado Warnings in Minnesota, 2004Every tornado warning in 2004Tornadoes in 2004
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.