Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 77, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 12, 2012, 8:46 PM CDT for Otter Tail County, Minnesota. It was in force for 59 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 12, 2012, 8:46 PM CDT (01:46 UTC)
- Expired
- Jul 12, 2012, 9:45 PM CDT
- In force
- 59 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Otter Tail County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 141 km from the middle of the area, began a volume at 01:45 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 nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 1.8 hours before the alert went out and 265 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
- 821 J/kg
- Mixed-layer CIN
- -66 J/kg
- Mixed-layer LCL
- 2251 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 28 m²/s²
- 0-3 km storm-relative helicity
- 140 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
882
WUUS53 KFGF 130146
SVRFGF
MNC111-130245-
/O.NEW.KFGF.SV.W.0077.120713T0146Z-120713T0245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
846 PM CDT THU JUL 12 2012
THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHWESTERN OTTER TAIL COUNTY IN WEST CENTRAL MINNESOTA...
* UNTIL 945 PM CDT
* AT 841 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 7 MILES
SOUTHWEST OF CORMORANT...OR 18 MILES SOUTHWEST OF DETROIT LAKES...
MOVING TO THE EAST AT 30 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
PELICAN RAPIDS AROUND 850 PM CDT.
DUNVILLA AROUND 855 PM CDT.
LAKE LIDA AROUND 900 PM CDT.
MAPLEWOOD STATE PARK AROUND 905 PM CDT.
THEREAFTER SOME OTHER LOCATIONS IMPACTED BY THE SEVERE THUNDERSTORM
INCLUDE VERGAS...STAR LAKE...BIG MCDONALD LAKE...DENT AND PERHAM.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCE WARNING.
&&
LAT...LON 4658 9628 4664 9617 4666 9618 4672 9617
4671 9543 4640 9569
TIME...MOT...LOC 0145Z 280DEG 24KT 4665 9612
WIND...HAIL 60MPH 1.00IN
$$
BRAMER2 follow-up statements
074
WWUS53 KFGF 130219
SVSFGF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
919 PM CDT THU JUL 12 2012
MNC111-130245-
/O.CON.KFGF.SV.W.0077.000000T0000Z-120713T0245Z/
OTTER TAIL MN-
919 PM CDT THU JUL 12 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHWESTERN
OTTER TAIL COUNTY IN WEST CENTRAL MINNESOTA UNTIL 945 PM CDT...
AT 918 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THE STORM WAS LOCATED 3 MILES
NORTH OF LAKE LIDA...OR 14 MILES SOUTHWEST OF DETROIT LAKES...MOVING
TO THE EAST AT 30 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
VERGAS AND STAR LAKE AROUND 935 PM CDT.
BIG MCDONALD LAKE AROUND 940 PM CDT.
PERHAM...RICHVILLE AND DENT AROUND 945 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCE WARNING.
TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.
&&
LAT...LON 4657 9623 4664 9617 4666 9618 4671 9611
4671 9543 4640 9569
TIME...MOT...LOC 0219Z 280DEG 24KT 4662 9596
WIND...HAIL 60MPH 1.00IN
$$
BRAMER004
WWUS53 KFGF 130247
SVSFGF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
947 PM CDT THU JUL 12 2012
MNC111-130257-
/O.EXP.KFGF.SV.W.0077.000000T0000Z-120713T0245Z/
OTTER TAIL MN-
947 PM CDT THU JUL 12 2012
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN OTTER TAIL COUNTY
IN WEST CENTRAL MINNESOTA HAS EXPIRED...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
HOWEVER HEAVY RAIN IS STILL POSSIBLE WITH THIS THUNDERSTORM.
LAT...LON 4657 9623 4664 9617 4666 9618 4671 9611
4671 9543 4640 9569
TIME...MOT...LOC 0219Z 180DEG 0KT 4662 9597
$$
EWENSThe office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 7:08 PM CDT | Special Weather Statement | FGF | Norman | 67 min |
| Jul 12, 7:43 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Clay | 45 min |
| Jul 12, 7:47 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Clay, Otter Tail | 58 min |
| Jul 12, 8:16 PM CDT | Severe Thunderstorm Warning | FGF | Grant | 59 min |
| Jul 13, 9:57 AM CDT | Areal Flood Advisory | FGF | Lake of the Woods | 5 hr |
| Jul 13, 4:48 PM CDT | Special Weather Statement | FGF | Clearwater | 57 min |
| Jul 13, 4:59 PM CDT | Special Weather Statement | FGF | Hubbard | 61 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.