Alert archive / Minnesota / Tornado Warnings in 2012
Tornado Warning 12, NWS Grand Forks, ND
NWS Grand Forks, ND issued this tornado warning at Aug 3, 2012, 7:57 PM CDT for 4 counties in Minnesota. It was in force for 48 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 3, 2012, 7:57 PM CDT (00:57 UTC)
- Expired
- Aug 3, 2012, 8:45 PM CDT
- In force
- 48 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
Counties Becker County, MN, Clay County, MN, Mahnomen County, MN, Norman County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 109 km from the middle of the area, began a volume at 00:59 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 3, 2:14 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
International Fa, MN (KINL), launched 00:00Z, 1.0 hours before the alert went out and 242 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
- 96 J/kg
- Mixed-layer CIN
- -168 J/kg
- Mixed-layer LCL
- 1457 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 106 m²/s²
- 0-3 km storm-relative helicity
- 215 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
112 WFUS53 KFGF 040057 TORFGF MNC005-027-087-107-040145- /O.NEW.KFGF.TO.W.0012.120804T0057Z-120804T0145Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 757 PM CDT FRI AUG 3 2012 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * TORNADO WARNING FOR... NORTHWESTERN BECKER COUNTY IN NORTHWEST MINNESOTA... NORTHEASTERN CLAY COUNTY IN NORTHWEST MINNESOTA... MAHNOMEN COUNTY IN NORTHWEST MINNESOTA... SOUTHEASTERN NORMAN COUNTY IN NORTHWEST MINNESOTA... * UNTIL 845 PM CDT * AT 755 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE STORM WAS LOCATED NEAR SYRE...OR 33 MILES NORTHWEST OF DETROIT LAKES...MOVING TO THE EAST AT 30 MPH. * THE TORNADIC STORM WILL BE NEAR... FLOM AROUND 805 PM CDT. FAITH AROUND 815 PM CDT. MAHNOMEN AND WAUBUN AROUND 825 PM CDT. NAYTAHWAUSH AND BEAULIEU AROUND 845 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES FOR A STURDY BUILDING. && LAT...LON 4744 9565 4717 9559 4709 9633 4726 9640 TIME...MOT...LOC 0058Z 254DEG 25KT 4720 9623 $$ TG
2 follow-up statements
748
WWUS53 KFGF 040114
SVSFGF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
814 PM CDT FRI AUG 3 2012
MNC005-027-040124-
/O.CAN.KFGF.TO.W.0012.000000T0000Z-120804T0145Z/
CLAY MN-BECKER MN-
814 PM CDT FRI AUG 3 2012
...THE TORNADO WARNING FOR NORTHWESTERN BECKER AND NORTHEASTERN CLAY
COUNTIES IN NORTHWEST MINNESOTA IS CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
LAT...LON 4717 9559 4715 9604 4715 9611 4729 9623
4744 9565
TIME...MOT...LOC 0114Z 254DEG 25KT 4723 9607
$$
MNC087-107-040145-
/O.CON.KFGF.TO.W.0012.000000T0000Z-120804T0145Z/
MAHNOMEN MN-NORMAN MN-
814 PM CDT FRI AUG 3 2012
...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN NORMAN AND
MAHNOMEN COUNTIES IN NORTHWEST MINNESOTA UNTIL 845 PM CDT...
AT 809 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 4 MILES NORTH OF
FLOM...OR 31 MILES NORTHWEST OF DETROIT LAKES...MOVING TO THE EAST AT
30 MPH.
THE TORNADIC STORM WILL BE NEAR...
MAHNOMEN AND WAUBUN AROUND 825 PM CDT.
NAYTAHWAUSH AND BEAULIEU AROUND 845 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES
FOR A STURDY BUILDING.
&&
LAT...LON 4717 9559 4715 9604 4715 9611 4729 9623
4744 9565
TIME...MOT...LOC 0114Z 254DEG 25KT 4723 9607
$$
TG202
WWUS53 KFGF 040146
SVSFGF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
846 PM CDT FRI AUG 3 2012
MNC087-107-040156-
/O.EXP.KFGF.TO.W.0012.000000T0000Z-120804T0145Z/
MAHNOMEN MN-NORMAN MN-
846 PM CDT FRI AUG 3 2012
...THE TORNADO WARNING FOR SOUTHEASTERN NORMAN AND MAHNOMEN COUNTIES
IN NORTHWEST MINNESOTA HAS EXPIRED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
LAT...LON 4717 9559 4715 9604 4715 9611 4729 9623
4744 9565
TIME...MOT...LOC 0114Z 254DEG 25KT 4723 9607
$$
ROGERSThe office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 3, 7:11 PM CDT | Severe Thunderstorm Warning | FGF | Clearwater, Mahnomen, Norman, Polk, Red Lake | 64 min |
| Aug 3, 7:20 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Clay, Hubbard, Otter Tail, Wadena, Wilkin | 55 min |
| Aug 3, 7:22 PM CDT | Tornado Warning | FGF | Clearwater, Polk, Red Lake | 39 min |
| Aug 3, 7:32 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Clay, Mahnomen, Norman | 58 min |
| Aug 3, 7:44 PM CDT | Severe Thunderstorm Warning | FGF | Otter Tail, Wilkin | 61 min |
| Aug 3, 7:54 PM CDT | Severe Thunderstorm Warning | FGF | Beltrami, Clearwater, Pennington, Polk, Red Lake | 66 min |
| Aug 3, 8:06 PM CDT | Severe Thunderstorm Warning | FGF | Grant, Otter Tail, Wilkin | 54 min |
| Aug 3, 8:12 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Clay, Clearwater, Hubbard, Otter Tail, Wadena | 63 min |
| Aug 3, 8:20 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Beltrami, Clearwater, Hubbard, Mahnomen, Norman and 1 more | 55 min |
| Aug 3, 8:27 PM CDT | Severe Thunderstorm Warning | FGF | Beltrami, Clearwater, Lake of the Woods, Marshall, Roseau | 63 min |
Nearby
Tornado Warnings in Minnesota, 2012Every tornado warning in 2012Tornadoes in 2012
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.