Alert archive / Minnesota / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 113, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 23, 2011, 4:55 AM CDT for 7 counties in Minnesota. It was in force for 50 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 23, 2011, 4:55 AM CDT (09:55 UTC)
- Expired
- Jul 23, 2011, 5:45 AM CDT
- In force
- 50 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 70.0 mph
Counties Becker County, MN, Clearwater County, MN, Grant County, MN, Hubbard County, MN, Mahnomen County, MN, Otter Tail County, MN, Wadena County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 193 km from the middle of the area, began a volume at 09:57 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 22, 10:15 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 23, 1:41 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 9.9 hours before the alert went out and 227 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
- 2607 J/kg
- Mixed-layer CIN
- -48 J/kg
- Mixed-layer LCL
- 1019 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 43 m²/s²
- 0-3 km storm-relative helicity
- 58 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 4.6
The text
As transmitted, in the capitals the NWS used until 2016.
536
WUUS53 KFGF 230955
SVRFGF
MNC005-029-051-057-087-111-159-231100-
/O.NEW.KFGF.SV.W.0113.110723T0955Z-110723T1100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
455 AM CDT SAT JUL 23 2011
THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
BECKER COUNTY IN NORTHWEST MINNESOTA...
SOUTHERN CLEARWATER COUNTY IN NORTHWEST MINNESOTA...
NORTHEASTERN GRANT COUNTY IN WEST CENTRAL MINNESOTA...
HUBBARD COUNTY IN NORTH CENTRAL MINNESOTA...
EASTERN MAHNOMEN COUNTY IN NORTHWEST MINNESOTA...
OTTER TAIL COUNTY IN WEST CENTRAL MINNESOTA...
WADENA COUNTY IN CENTRAL MINNESOTA...
* UNTIL 600 AM CDT
* AT 452 AM 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 4 MILES EAST OF LONG LOST LAKE
TO 5 MILES NORTHEAST OF WOLF LAKE TO 4 MILES WEST OF DEER CREEK TO
6 MILES NORTHEAST OF GARFIELD...MOVING TO THE EAST AT 55 MPH.
* SEVERE THUNDERSTORMS WILL BE NEAR...
LAKE ITASCA...BLUFFTON AND ALIDA AROUND 500 AM CDT.
WADENA...SEBEKA AND PARK RAPIDS AROUND 505 AM CDT.
LAKE GEORGE...EMMAVILLE AND DORSET AROUND 510 AM CDT.
VERNDALE...NIMROD AND NEVIS AROUND 515 AM CDT.
THEREAFTER SOME OTHER LOCATIONS IMPACTED BY THE SEVERE THUNDERSTORMS
INCLUDE MENAHGA...BLUE GRASS...KABEKONA...OYLEN AND STAPLES AIRPORT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCE WARNING.
THE STORMS HAVE A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS!
&&
LAT...LON 4680 9477 4640 9477 4637 9472 4636 9514
4610 9515 4610 9573 4610 9576 4599 9576
4599 9590 4641 9593 4743 9590 4740 9466
4726 9465 4681 9465
TIME...MOT...LOC 0955Z 268DEG 47KT 4721 9528 4685 9523
4641 9535 4602 9536
WIND...HAIL 70MPH 1.00IN
$$
PS/JK2 follow-up statements
269
WWUS53 KFGF 231029
SVSFGF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
529 AM CDT SAT JUL 23 2011
MNC051-087-231038-
/O.CAN.KFGF.SV.W.0113.000000T0000Z-110723T1100Z/
GRANT MN-MAHNOMEN MN-
529 AM CDT SAT JUL 23 2011
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN MAHNOMEN COUNTY IN
NORTHWEST MINNESOTA...AND NORTHEASTERN GRANT COUNTY IN WEST CENTRAL
MINNESOTA IS CANCELLED...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE
WARNED AREA.
LAT...LON 4680 9477 4640 9477 4637 9472 4636 9514
4610 9515 4612 9564 4638 9542 4688 9521
4742 9538 4740 9466 4726 9465 4681 9465
TIME...MOT...LOC 1028Z 268DEG 47KT 4736 9482 4699 9476
4643 9482 4588 9517
$$
MNC005-029-057-111-159-231100-
/O.CON.KFGF.SV.W.0113.000000T0000Z-110723T1100Z/
HUBBARD MN-WADENA MN-OTTER TAIL MN-BECKER MN-CLEARWATER MN-
529 AM CDT SAT JUL 23 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WADENA COUNTY
IN CENTRAL MINNESOTA...AND HUBBARD COUNTY IN NORTH CENTRAL
MINNESOTA...AND SOUTHEASTERN CLEARWATER AND EASTERN BECKER COUNTIES
IN NORTHWEST MINNESOTA...AND EASTERN OTTER TAIL COUNTY IN WEST
CENTRAL MINNESOTA UNTIL 600 AM CDT...
AT 525 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM 3 MILES WEST OF NARY TO 2 MILES NORTHEAST OF NEVIS TO 5 MILES
NORTHWEST OF STAPLES AIRPORT TO NEAR NELSON...MOVING TO THE EAST AT
55 MPH.
SEVERE THUNDERSTORMS WILL BE NEAR...
BENEDICT AROUND 535 AM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCE WARNING.
THE STORMS HAVE A HISTORY OF PRODUCING WIDESPREAD WIND DAMAGE. THE
STORM IS DANGEROUS. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND
STAY AWAY FROM WINDOWS.
IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY! LIGHTNING IS ONE OF NATURE'S LEADING KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.
&&
LAT...LON 4680 9477 4640 9477 4637 9472 4636 9514
4610 9515 4612 9564 4638 9542 4688 9521
4742 9538 4740 9466 4726 9465 4681 9465
TIME...MOT...LOC 1028Z 268DEG 47KT 4736 9482 4699 9476
4643 9482 4588 9517
$$
JK864
WWUS53 KFGF 231045
SVSFGF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
545 AM CDT SAT JUL 23 2011
MNC005-029-057-111-159-231054-
/O.CAN.KFGF.SV.W.0113.000000T0000Z-110723T1100Z/
HUBBARD MN-WADENA MN-OTTER TAIL MN-BECKER MN-CLEARWATER MN-
545 AM CDT SAT JUL 23 2011
...THE SEVERE THUNDERSTORM WARNING FOR WADENA COUNTY IN CENTRAL
MINNESOTA...AND HUBBARD COUNTY IN NORTH CENTRAL MINNESOTA...AND
SOUTHEASTERN CLEARWATER AND EASTERN BECKER COUNTIES IN NORTHWEST
MINNESOTA...AND EASTERN OTTER TAIL COUNTY IN WEST CENTRAL MINNESOTA
IS CANCELLED...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED AND MOVED
OUT OF THE WARNED AREA. HOWEVER GUSTY WINDS AND HEAVY RAINFALL ARE
STILL POSSIBLE WITH THESE THUNDERSTORMS.
LAT...LON 4680 9477 4640 9477 4637 9472 4636 9514
4610 9515 4612 9564 4638 9542 4688 9521
4742 9538 4740 9466 4726 9465 4681 9465
TIME...MOT...LOC 1044Z 268DEG 47KT 4736 9450 4699 9445
4643 9452 4588 9488
$$
JKThe office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 22, 8:38 PM CDT | Severe Thunderstorm Warning | FGF | Grant, Otter Tail | 32 min |
| Jul 23, 2:39 AM CDT | Severe Thunderstorm Warning | FGF | Wilkin | 51 min |
| Jul 23, 3:12 AM CDT | Severe Thunderstorm Warning | FGF | Clay, Norman, Polk, Wilkin | 63 min |
| Jul 23, 3:23 AM CDT | Severe Thunderstorm Warning | FGF | Grant, Otter Tail, Wilkin | 52 min |
| Jul 23, 3:58 AM CDT | Severe Thunderstorm Warning | FGF | Becker, Clay, Clearwater, Grant, Mahnomen, Norman and 3 more | 62 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2011Every severe thunderstorm warning in 2011
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.