Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 63, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 4, 2012, 10:36 AM CDT for Marshall County, Pennington County, Polk County, Minnesota. It was in force for 54 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 4, 2012, 10:36 AM CDT (15:36 UTC)
- Expired
- Jul 4, 2012, 11:30 AM CDT
- In force
- 54 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Marshall County, MN, Pennington County, MN, Polk County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 101 km from the middle of the area, began a volume at 15:39 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 4, 8:10 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
International Fa, MN (KINL), launched 12:00Z, 3.6 hours before the alert went out and 238 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
- 113 J/kg
- Mixed-layer CIN
- -490 J/kg
- Mixed-layer LCL
- 1552 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 61 m²/s²
- 0-3 km storm-relative helicity
- 101 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
939 WUUS53 KFGF 041536 SVRFGF MNC089-113-119-041630- /O.NEW.KFGF.SV.W.0063.120704T1536Z-120704T1630Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 1036 AM CDT WED JUL 4 2012 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL MARSHALL COUNTY IN NORTHWEST MINNESOTA... WESTERN PENNINGTON COUNTY IN NORTHWEST MINNESOTA... NORTHWESTERN POLK COUNTY IN NORTHWEST MINNESOTA... * UNTIL 1130 AM CDT * AT 1034 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL. THE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 2 MILES SOUTHWEST OF ARGYLE TO NEAR TABOR...MOVING TO THE EAST AT 30 MPH. * SEVERE THUNDERSTORMS WILL BE NEAR... ANGUS AROUND 1045 AM CDT. RADIUM AROUND 1055 AM CDT. OLD MILL STATE PARK AROUND 1100 AM CDT. CARPENTERS CORNER AROUND 1110 AM CDT. THEREAFTER SOME OTHER LOCATIONS IMPACTED BY THE SEVERE THUNDERSTORMS INCLUDE VIKING...ROSEWOOD AND THIEF RIVER FALLS. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THE STORMS...AND MAY LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS. && LAT...LON 4841 9618 4798 9616 4799 9695 4841 9698 TIME...MOT...LOC 1536Z 272DEG 25KT 4832 9684 4808 9681 WIND...HAIL <50MPH 1.00IN $$ HOPKINS
3 follow-up statements
056 WWUS53 KFGF 041556 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 1056 AM CDT WED JUL 4 2012 MNC089-113-119-041630- /O.CON.KFGF.SV.W.0063.000000T0000Z-120704T1630Z/ PENNINGTON MN-POLK MN-MARSHALL MN- 1056 AM CDT WED JUL 4 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL MARSHALL...NORTH CENTRAL POLK AND WESTERN PENNINGTON COUNTIES IN NORTHWEST MINNESOTA UNTIL 1130 AM CDT... AT 1052 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL. THE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 6 MILES SOUTHWEST OF OLD MILL STATE PARK TO 3 MILES EAST OF ANGUS...MOVING TO THE EAST AT 30 MPH. SEVERE THUNDERSTORMS WILL BE NEAR... VIKING AND CARPENTERS CORNER AROUND 1115 AM CDT. ROSEWOOD AND NEWFOLDEN AROUND 1125 AM CDT. THIEF RIVER FALLS...ST. HILAIRE AND HOLT AROUND 1130 AM CDT. THEREAFTER SOME OTHER LOCATIONS IMPACTED BY SEVERE THUNDERSTORMS INCLUDE DAKOTA JUNCTION. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS. && LAT...LON 4799 9677 4841 9681 4841 9618 4798 9616 TIME...MOT...LOC 1556Z 272DEG 25KT 4831 9663 4807 9660 WIND...HAIL <50MPH 1.00IN $$ HOPKINS
916 WWUS53 KFGF 041608 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 1108 AM CDT WED JUL 4 2012 MNC119-041618- /O.CAN.KFGF.SV.W.0063.000000T0000Z-120704T1630Z/ POLK MN- 1108 AM CDT WED JUL 4 2012 ...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL POLK COUNTY IN NORTHWEST MINNESOTA IS CANCELLED... THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE WARNED AREA. LAT...LON 4799 9646 4841 9651 4841 9618 4798 9616 TIME...MOT...LOC 1608Z 272DEG 25KT 4832 9636 4808 9634 $$ MNC089-113-041630- /O.CON.KFGF.SV.W.0063.000000T0000Z-120704T1630Z/ PENNINGTON MN-MARSHALL MN- 1108 AM CDT WED JUL 4 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL MARSHALL AND WESTERN PENNINGTON COUNTIES IN NORTHWEST MINNESOTA UNTIL 1130 AM CDT... AT 1106 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL. THE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 3 MILES SOUTHWEST OF NEWFOLDEN TO 6 MILES SOUTHEAST OF CARPENTERS CORNER...MOVING TO THE EAST AT 30 MPH. SEVERE THUNDERSTORMS WILL BE NEAR... ROSEWOOD AROUND 1115 AM CDT. ST. HILAIRE AROUND 1120 AM CDT. THIEF RIVER FALLS...DAKOTA JUNCTION AND HOLT AROUND 1125 AM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS. && LAT...LON 4799 9646 4841 9651 4841 9618 4798 9616 TIME...MOT...LOC 1608Z 272DEG 25KT 4832 9636 4808 9634 WIND...HAIL <50MPH 1.00IN $$ HOPKINS
817 WWUS53 KFGF 041625 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 1125 AM CDT WED JUL 4 2012 MNC089-113-041635- /O.EXP.KFGF.SV.W.0063.000000T0000Z-120704T1630Z/ PENNINGTON MN-MARSHALL MN- 1125 AM CDT WED JUL 4 2012 ...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL MARSHALL AND WESTERN PENNINGTON COUNTIES IN NORTHWEST MINNESOTA WILL EXPIRE AT 1130 AM CDT... 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 SMALL HAIL IS STILL POSSIBLE WITH THESE THUNDERSTORMS. IN ADDITION...STRONG THUNDERSTORMS MAY REDEVELOP...AND A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 PM CDT. LAT...LON 4799 9646 4841 9651 4841 9618 4798 9616 TIME...MOT...LOC 1625Z 272DEG 25KT 4831 9618 4807 9616 $$ HOPKINS
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 4, 4:12 AM CDT | Heat Advisory | FGF | Becker, Beltrami, Clay, Clearwater, Grant, Hubbard and 12 more | 18 hr |
| Jul 4, 7:54 AM CDT | Severe Thunderstorm Warning | FGF | Kittson, Marshall | 66 min |
| Jul 4, 8:58 AM CDT | Severe Thunderstorm Warning | FGF | Kittson, Marshall, Roseau | 62 min |
| Jul 4, 9:56 AM CDT | Severe Thunderstorm Warning | FGF | Marshall, Roseau | 64 min |
| Jul 4, 10:08 AM CDT | Severe Thunderstorm Warning | FGF | Polk | 67 min |
| Jul 4, 11:27 AM CDT | Special Weather Statement | FGF | Pennington | 63 min |
| Jul 4, 12:02 PM CDT | Severe Thunderstorm Warning | FGF | Beltrami, Lake of the Woods | 43 min |
| Jul 4, 1:01 PM CDT | Severe Thunderstorm Warning | FGF | Beltrami | 59 min |
| Jul 4, 1:52 PM CDT | Severe Thunderstorm Warning | FGF | Beltrami | 24 min |
| Jul 4, 4:55 PM CDT | Special Weather Statement | FGF | Hubbard | 50 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.