Alert archive / Minnesota / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 150, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 21, 2020, 7:20 PM CDT for 4 counties in Minnesota. It was in force for 55 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 21, 2020, 7:20 PM CDT (00:20 UTC)
- Expired
- Aug 21, 2020, 8:15 PM CDT
- In force
- 55 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 70.0 mph
Counties Chippewa County, MN, Kandiyohi County, MN, Pope County, MN, Swift County, MN
The radar
The Minneapolis radar (KMPX), 146 km from the middle of the area, began a volume at 00:24 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 21, 6:20 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 0.3 hours before the alert went out and 144 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
- 2353 J/kg
- Mixed-layer CIN
- -98 J/kg
- Mixed-layer LCL
- 1265 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 120 m²/s²
- 0-3 km storm-relative helicity
- 276 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
906
WUUS53 KMPX 220020
SVRMPX
MNC023-067-121-151-220115-
/O.NEW.KMPX.SV.W.0150.200822T0020Z-200822T0115Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
720 PM CDT Fri Aug 21 2020
The National Weather Service in the Twin Cities has issued a
* Severe Thunderstorm Warning for...
Southern Pope County in west central Minnesota...
Northeastern Chippewa County in west central Minnesota...
Eastern Swift County in west central Minnesota...
Northwestern Kandiyohi County in central Minnesota...
* Until 815 PM CDT.
* At 719 PM CDT, severe thunderstorms were located along a line
extending from 6 miles northwest of Lake Hassel to near Benson to 7
miles northeast of Montevideo, moving east at 15 mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
* Severe thunderstorms will be near...
Lake Hassel around 735 PM CDT.
Murdock around 805 PM CDT.
Raymond and Kerkhoven around 815 PM CDT.
Other locations impacted by these severe thunderstorms include Benson
Airport, Gilchrist, Swift Falls, Clontarf, Willmar Airport, Norway
Lake, De Graff, Sunburg, Priam and Pennock.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in the Twin Cities.
&&
LAT...LON 4554 9518 4545 9512 4542 9513 4541 9509
4527 9500 4501 9516 4505 9569 4523 9567
4547 9571
TIME...MOT...LOC 0019Z 268DEG 11KT 4547 9563 4526 9558 4504 9561
HAIL...1.00IN
WIND...70MPH
$$
JLT4 follow-up statements
714
WWUS53 KMPX 220033
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
733 PM CDT Fri Aug 21 2020
MNC023-067-121-151-220115-
/O.CON.KMPX.SV.W.0150.000000T0000Z-200822T0115Z/
Pope MN-Chippewa MN-Swift MN-Kandiyohi MN-
733 PM CDT Fri Aug 21 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM CDT
FOR SOUTHERN POPE...NORTHEASTERN CHIPPEWA...EASTERN SWIFT AND
NORTHWESTERN KANDIYOHI COUNTIES...
At 733 PM CDT, severe thunderstorms were located along a line
extending from 8 miles northeast of Lake Hassel to near Murdock to 8
miles northwest of Clara City, moving east at 25 mph.
HAZARD...70 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to mobile
homes, roofs, and outbuildings.
These severe storms will be near...
Kerkhoven around 740 PM CDT.
Raymond around 800 PM CDT.
Willmar around 820 PM CDT.
Other locations impacted by these severe thunderstorms include Benson
Airport, Gilchrist, Swift Falls, Clontarf, Willmar Airport, Norway
Lake, De Graff, Sunburg, Priam and Pennock.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
the Twin Cities.
&&
LAT...LON 4554 9518 4545 9512 4542 9513 4541 9509
4527 9500 4501 9516 4505 9569 4523 9567
4547 9571
TIME...MOT...LOC 0033Z 264DEG 20KT 4548 9544 4527 9537 4506 9546
HAIL...0.88IN
WIND...70MPH
$$
JLT058
WWUS53 KMPX 220043
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
743 PM CDT Fri Aug 21 2020
MNC023-067-121-151-220115-
/O.CON.KMPX.SV.W.0150.000000T0000Z-200822T0115Z/
Pope MN-Chippewa MN-Swift MN-Kandiyohi MN-
743 PM CDT Fri Aug 21 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM CDT
FOR SOUTHERN POPE...NORTHEASTERN CHIPPEWA...EASTERN SWIFT AND
NORTHWESTERN KANDIYOHI COUNTIES...
At 743 PM CDT, severe thunderstorms were located along a line
extending from 9 miles west of Brooten to 6 miles northeast of
Kerkhoven to near Raymond, moving east at 50 mph.
HAZARD...70 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to mobile
homes, roofs, and outbuildings.
These severe storms will be near...
Willmar around 800 PM CDT.
Other locations impacted by these severe thunderstorms include Benson
Airport, Gilchrist, Swift Falls, Clontarf, Willmar Airport, Norway
Lake, De Graff, Sunburg, Priam and Pennock.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
the Twin Cities.
&&
LAT...LON 4554 9518 4545 9512 4542 9513 4541 9509
4527 9500 4501 9516 4505 9569 4523 9567
4547 9571
TIME...MOT...LOC 0043Z 269DEG 42KT 4547 9530 4526 9523 4505 9532
HAIL...0.88IN
WIND...70MPH
$$
JLT618
WWUS53 KMPX 220104
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
804 PM CDT Fri Aug 21 2020
MNC023-151-220113-
/O.CAN.KMPX.SV.W.0150.000000T0000Z-200822T0115Z/
Chippewa MN-Swift MN-
804 PM CDT Fri Aug 21 2020
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CHIPPEWA AND
EASTERN SWIFT COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area.Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 200 AM CDT for
central and west central Minnesota.
LAT...LON 4554 9518 4545 9512 4542 9513 4541 9509
4527 9500 4501 9516 4502 9525 4541 9525
4542 9533
TIME...MOT...LOC 0103Z 268DEG 11KT 4547 9522 4526 9515 4505 9524
$$
MNC067-121-220115-
/O.CON.KMPX.SV.W.0150.000000T0000Z-200822T0115Z/
Pope MN-Kandiyohi MN-
804 PM CDT Fri Aug 21 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM CDT
FOR SOUTHEASTERN POPE AND NORTHWESTERN KANDIYOHI COUNTIES...
At 803 PM CDT, severe thunderstorms were located along a line
extending from near Brooten to 9 miles northeast of Kerkhoven to near
Raymond, moving east at 15 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
These severe storms will be near...
Willmar around 840 PM CDT.
Other locations impacted by these severe thunderstorms include Norway
Lake, Sunburg, Willmar Airport, Priam and Pennock.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
the Twin Cities.
&&
LAT...LON 4554 9518 4545 9512 4542 9513 4541 9509
4527 9500 4501 9516 4502 9525 4541 9525
4542 9533
TIME...MOT...LOC 0103Z 268DEG 11KT 4547 9522 4526 9515 4505 9524
HAIL...0.88IN
WIND...60MPH
$$
JLT548
WWUS53 KMPX 220112
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
812 PM CDT Fri Aug 21 2020
MNC067-121-220122-
/O.EXP.KMPX.SV.W.0150.000000T0000Z-200822T0115Z/
Pope MN-Kandiyohi MN-
812 PM CDT Fri Aug 21 2020
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN POPE AND
NORTHWESTERN KANDIYOHI COUNTIES WILL EXPIRE AT 815 PM CDT...
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore, the warning will
be allowed to expire. However gusty winds are still possible with
these thunderstorms.
A Severe Thunderstorm Watch remains in effect until 200 AM CDT for
central and west central Minnesota.
LAT...LON 4554 9518 4545 9512 4542 9513 4541 9509
4527 9500 4501 9516 4502 9525 4541 9525
4542 9533
TIME...MOT...LOC 0112Z 268DEG 11KT 4547 9515 4526 9508 4505 9517
$$
JLTThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 21, 7:00 PM CDT | Special Weather Statement | MPX | Chippewa | 60 min |
| Aug 21, 7:55 PM CDT | Special Weather Statement | MPX | Kandiyohi, Meeker, Stearns | 50 min |
| Aug 21, 8:00 PM CDT | Special Weather Statement | MPX | Renville | 60 min |
| Aug 21, 8:43 PM CDT | Special Weather Statement | MPX | McLeod | 47 min |
| Aug 21, 9:07 PM CDT | Special Weather Statement | MPX | Carver, Wright | 38 min |
| Aug 21, 9:37 PM CDT | Special Weather Statement | MPX | Anoka, Carver, Hennepin, Ramsey, Scott | 53 min |
| Aug 21, 10:12 PM CDT | Special Weather Statement | MPX | Le Sueur | 48 min |
| Aug 21, 10:27 PM CDT | Special Weather Statement | MPX | Renville | 33 min |
| Aug 21, 11:19 PM CDT | Special Weather Statement | MPX | Sibley | 41 min |
| Aug 22, 12:13 AM CDT | Special Weather Statement | MPX | Nicollet | 3 hr |
| Aug 22, 1:22 AM CDT | Flash Flood Warning | MPX | Blue Earth, Brown, Nicollet | 4 hr |
| Aug 22, 1:25 AM CDT | Special Weather Statement | MPX | Faribault, Freeborn, Steele, Waseca | 3 hr |
| Aug 22, 6:51 AM CDT | Special Weather Statement | MPX | Sherburne | 39 min |
| Aug 22, 8:47 AM CDT | Special Weather Statement | MPX | Morrison | 43 min |
| Aug 22, 9:26 AM CDT | Special Weather Statement | MPX | Kanabec, Mille Lacs | 64 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2020Every severe thunderstorm warning in 2020
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.