Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 103, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 29, 2012, 10:14 PM CDT for 4 counties in Minnesota. It was in force for 61 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
- Jul 29, 2012, 10:14 PM CDT (03:14 UTC)
- Expired
- Jul 29, 2012, 11:15 PM CDT
- In force
- 61 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Beltrami County, MN, Lake of the Woods County, MN, Marshall County, MN, Roseau County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 183 km from the middle of the area, began a volume at 03:16 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 |
|---|---|---|---|
| Jul 29, 7:51 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
International Fa, MN (KINL), launched 00:00Z, 3.2 hours before the alert went out and 150 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
- 1490 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 1732 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 71 m²/s²
- 0-3 km storm-relative helicity
- 119 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 4.9
The text
As transmitted, in the capitals the NWS used until 2016.
387 WUUS53 KFGF 300314 SVRFGF MNC007-077-089-135-300415- /O.NEW.KFGF.SV.W.0103.120730T0314Z-120730T0415Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 1014 PM CDT SUN JUL 29 2012 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN BELTRAMI COUNTY IN NORTH CENTRAL MINNESOTA... SOUTHERN LAKE OF THE WOODS COUNTY IN NORTH CENTRAL MINNESOTA... NORTHEASTERN MARSHALL COUNTY IN NORTHWEST MINNESOTA... EASTERN ROSEAU COUNTY IN NORTHWEST MINNESOTA... * UNTIL 1115 PM CDT * AT 1012 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 60 MPH. THE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM NEAR WARROAD TO 4 MILES EAST OF STRATHCONA...MOVING TO THE SOUTHEAST AT 35 MPH. * THIS STORM HAS A HISTORY OF PRODUCING HAIL TO ONE INCH AND WIND GUSTS OVER 50 MPH. * SEVERE THUNDERSTORMS WILL BE NEAR... WANNASKA...SWIFT AND PENCER AROUND 1020 PM CDT. TORFIN AROUND 1025 PM CDT. ROOSEVELT...HAYES LAKE STATE PARK AND CASPERSON AROUND 1030 PM CDT. SKIME AROUND 1035 PM CDT. THEREAFTER SOME OTHER LOCATIONS IMPACTED BY THE SEVERE THUNDERSTORMS INCLUDE GATZKE...WILLIAMS...GRACETON...GRYGLA...CARMEL AND THORHULT. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. && LAT...LON 4818 9534 4857 9629 4899 9529 4856 9442 TIME...MOT...LOC 0314Z 302DEG 31KT 4889 9528 4856 9605 WIND...HAIL 60MPH 1.00IN $$ DTR
2 follow-up statements
494 WWUS53 KFGF 300351 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 1051 PM CDT SUN JUL 29 2012 MNC007-077-089-135-300415- /O.CON.KFGF.SV.W.0103.000000T0000Z-120730T0415Z/ LAKE OF THE WOODS MN-ROSEAU MN-BELTRAMI MN-MARSHALL MN- 1051 PM CDT SUN JUL 29 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHWESTERN BELTRAMI AND SOUTHERN LAKE OF THE WOODS COUNTIES IN NORTH CENTRAL MINNESOTA...AND NORTHEASTERN MARSHALL AND EASTERN ROSEAU COUNTIES IN NORTHWEST MINNESOTA UNTIL 1115 PM CDT... AT 1048 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 3 MILES WEST OF GRACETON TO NEAR GATZKE...MOVING TO THE SOUTHEAST AT 35 MPH. SEVERE THUNDERSTORMS WILL BE NEAR... GRYGLA...GATES CORNER AND FAUNCE AROUND 1105 PM CDT. THORHULT...OAKS CORNER AND MALCOLM AROUND 1115 PM CDT. THEREAFTER SOME OTHER LOCATIONS IMPACTED BY SEVERE THUNDERSTORMS INCLUDE JELLE...FOURTOWN...CARP AND CARMEL. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. && LAT...LON 4818 9534 4857 9629 4899 9529 4856 9442 TIME...MOT...LOC 0351Z 302DEG 31KT 4872 9487 4843 9576 WIND...HAIL 60MPH 1.00IN $$ DTR
900 WWUS53 KFGF 300415 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 1115 PM CDT SUN JUL 29 2012 MNC007-077-089-135-300425- /O.EXP.KFGF.SV.W.0103.000000T0000Z-120730T0415Z/ LAKE OF THE WOODS MN-ROSEAU MN-BELTRAMI MN-MARSHALL MN- 1115 PM CDT SUN JUL 29 2012 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN BELTRAMI AND SOUTHERN LAKE OF THE WOODS COUNTIES IN NORTH CENTRAL MINNESOTA...AND NORTHEASTERN MARSHALL AND EASTERN ROSEAU COUNTIES IN NORTHWEST MINNESOTA HAS EXPIRED... THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. HOWEVER...HAIL TO DIME SIZE IS STILL POSSIBLE IN THE GATZKE AND GRYGLA AREA IN EASTERN MARSHALL COUNTY. LAT...LON 4818 9534 4857 9629 4899 9529 4856 9442 TIME...MOT...LOC 0415Z 302DEG 31KT 4861 9461 4832 9550 $$ DTR
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 29, 8:58 PM CDT | Special Weather Statement | FGF | Roseau | 62 min |
| Jul 29, 9:13 PM CDT | Severe Thunderstorm Warning | FGF | Lake of the Woods, Roseau | 62 min |
| Jul 29, 9:37 PM CDT | Severe Thunderstorm Warning | FGF | Polk | 53 min |
| Jul 29, 9:46 PM CDT | Severe Thunderstorm Warning | FGF | Roseau | 29 min |
| Jul 29, 10:29 PM CDT | Severe Thunderstorm Warning | FGF | Polk, Red Lake | 41 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.