Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 112, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 3, 2012, 7:32 PM CDT for 4 counties in Minnesota. It was in force for 58 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, 7:32 PM CDT (00:32 UTC)
- Expired
- Aug 3, 2012, 8:30 PM CDT
- In force
- 58 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Becker County, MN, Clay County, MN, Mahnomen County, MN, Norman County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 101 km from the middle of the area, began a volume at 00:31 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, 0.5 hours before the alert went out and 252 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.
709 WUUS53 KFGF 040032 SVRFGF MNC005-027-087-107-040130- /O.NEW.KFGF.SV.W.0112.120804T0032Z-120804T0130Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 732 PM CDT FRI AUG 3 2012 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN BECKER COUNTY IN NORTHWEST MINNESOTA... NORTHERN CLAY COUNTY IN NORTHWEST MINNESOTA... MAHNOMEN COUNTY IN NORTHWEST MINNESOTA... SOUTHERN NORMAN COUNTY IN NORTHWEST MINNESOTA... * UNTIL 830 PM CDT * AT 727 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THE STORM WAS LOCATED 5 MILES NORTHWEST OF AVERILL...OR 14 MILES NORTHEAST OF FARGO...MOVING TO THE EAST AT 30 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... FELTON AND BORUP AROUND 740 PM CDT. ADA AND HADLER AROUND 745 PM CDT. HITTERDAL AROUND 755 PM CDT. ULEN AROUND 800 PM CDT. THEREAFTER SOME OTHER LOCATIONS IMPACTED BY THE SEVERE THUNDERSTORM INCLUDE TWIN VALLEY...GARY...FLOM...WAUKON...OGEMA AND MAHNOMEN. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. && LAT...LON 4743 9565 4706 9558 4692 9667 4740 9666 TIME...MOT...LOC 0032Z 255DEG 28KT 4703 9656 WIND...HAIL 60MPH 1.00IN $$ TG
2 follow-up statements
419 WWUS53 KFGF 040051 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 751 PM CDT FRI AUG 3 2012 MNC005-027-087-107-040130- /O.CON.KFGF.SV.W.0112.000000T0000Z-120804T0130Z/ MAHNOMEN MN-NORMAN MN-CLAY MN-BECKER MN- 751 PM CDT FRI AUG 3 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHWESTERN BECKER...NORTHEASTERN CLAY...EASTERN NORMAN AND MAHNOMEN COUNTIES IN NORTHWEST MINNESOTA UNTIL 830 PM CDT... AT 750 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 70 MPH. THE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 3 MILES WEST OF GARY TO 2 MILES WEST OF HITTERDAL...MOVING TO THE EAST AT 30 MPH. SEVERE THUNDERSTORMS WILL BE NEAR... FLOM AROUND 805 PM CDT. WAUKON AND FAITH AROUND 810 PM CDT. MAHNOMEN AROUND 820 PM CDT. WAUBUN AND OGEMA AROUND 825 PM CDT. THEREAFTER SOME OTHER LOCATIONS IMPACTED BY SEVERE THUNDERSTORMS INCLUDE WHITE EARTH...NAYTAHWAUSH AND BEAULIEU. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. && LAT...LON 4741 9645 4743 9565 4706 9558 4695 9646 TIME...MOT...LOC 0052Z 255DEG 28KT 4739 9631 4698 9629 WIND...HAIL 70MPH 1.00IN $$ TG
297 WWUS53 KFGF 040117 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 817 PM CDT FRI AUG 3 2012 MNC027-040126- /O.CAN.KFGF.SV.W.0112.000000T0000Z-120804T0130Z/ CLAY MN- 817 PM CDT FRI AUG 3 2012 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CLAY COUNTY IN NORTHWEST MINNESOTA IS CANCELLED... THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE WARNED AREA. LAT...LON 4741 9628 4743 9565 4706 9558 4699 9613 TIME...MOT...LOC 0116Z 255DEG 28KT 4744 9598 4703 9597 $$ MNC005-087-107-040130- /O.CON.KFGF.SV.W.0112.000000T0000Z-120804T0130Z/ MAHNOMEN MN-NORMAN MN-BECKER MN- 817 PM CDT FRI AUG 3 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHWESTERN BECKER...EASTERN NORMAN AND MAHNOMEN COUNTIES IN NORTHWEST MINNESOTA UNTIL 830 PM CDT... AT 813 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 70 MPH. THE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 2 MILES WEST OF BEJOU TO 5 MILES NORTHWEST OF CALLAWAY...MOVING TO THE EAST AT 30 MPH. SEVERE THUNDERSTORMS WILL BE NEAR... WHITE EARTH AROUND 825 PM CDT. TULABY LAKE...NAYTAHWAUSH AND BEAULIEU AROUND 830 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. && LAT...LON 4741 9628 4743 9565 4706 9558 4699 9613 TIME...MOT...LOC 0116Z 255DEG 28KT 4744 9598 4703 9597 WIND...HAIL 70MPH 1.00IN $$ ROGERS
The 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, 7:44 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, 7:57 PM CDT | Tornado Warning | FGF | Becker, Clay, Mahnomen, Norman | 48 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
Severe Thunderstorm Warnings in Minnesota, 2012Every severe thunderstorm warning 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.