Alert archive / Minnesota / Tornado Warnings in 2021

Tornado Warning 22, NWS Twin Cities, MN

September 16, 2021Morrison County, Todd County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Sep 16, 2021, 5:45 PM CDT for Morrison County, Todd County, Minnesota. It was in force for 33 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
Sep 16, 2021, 5:45 PM CDT (22:45 UTC)
Expired
Sep 16, 2021, 6:18 PM CDT
In force
33 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Morrison County, MN, Todd County, MN

The radar

The Minneapolis radar (KMPX), 164 km from the middle of the area, began a volume at 22:48 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

Minneapolis, MN (KMPX), launched 12:00Z, 10.8 hours before the alert went out and 162 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.

Skew-T log-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 2021-09-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2021-09-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 362 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1213 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
362 m²/s²
0-3 km storm-relative helicity
428 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.0

Open this sounding in Storm Lab

The text

As transmitted.

589 
WFUS53 KMPX 162245
TORMPX
MNC097-153-162330-
/O.NEW.KMPX.TO.W.0022.210916T2245Z-210916T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Twin Cities/Chanhassen MN
545 PM CDT Thu Sep 16 2021

The National Weather Service in the Twin Cities has issued a

* Tornado Warning for...
  Southeastern Todd County in central Minnesota...
  Northwestern Morrison County in central Minnesota...

* Until 630 PM CDT.
    
* At 545 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Swanville, or 16 miles west of Little Falls,
  moving northeast at 50 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur. Tree 
           damage is likely.

* This dangerous storm will be near...
  Flensburg around 550 PM CDT.
  Randall around 600 PM CDT.

Other locations in the path of this tornadic thunderstorm include
Camp Ripley.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4630 9436 4627 9434 4623 9440 4618 9437
      4616 9438 4615 9418 4578 9470 4587 9488
      4631 9456 4631 9451 4633 9443
TIME...MOT...LOC 2245Z 219DEG 43KT 4595 9469 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

JRB
3 follow-up statements
048 
WWUS53 KMPX 162301
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
601 PM CDT Thu Sep 16 2021

MNC097-153-162330-
/O.CON.KMPX.TO.W.0022.000000T0000Z-210916T2330Z/
Todd MN-Morrison MN-
601 PM CDT Thu Sep 16 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 PM CDT FOR EAST
CENTRAL TODD AND NORTHWESTERN MORRISON COUNTIES...
    
At 600 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Randall, or 11 miles northwest of Little Falls,
moving northeast at 50 mph.

HAZARD...Tornado and quarter size hail.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur. Tree damage is 
         likely.

This dangerous storm will be near...
  Camp Ripley around 605 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4615 9418 4583 9463 4596 9475 4633 9444
      4633 9443 4630 9436 4627 9434 4623 9440
      4618 9437 4616 9438
TIME...MOT...LOC 2300Z 219DEG 43KT 4610 9452 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

BPH
759 
WWUS53 KMPX 162308
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
608 PM CDT Thu Sep 16 2021

MNC153-162318-
/O.CAN.KMPX.TO.W.0022.000000T0000Z-210916T2330Z/
Todd MN-
608 PM CDT Thu Sep 16 2021

...THE TORNADO WARNING FOR EAST CENTRAL TODD COUNTY IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until midnight CDT for central
Minnesota.

LAT...LON 4627 9434 4623 9440 4618 9437 4616 9438
      4615 9418 4583 9463 4584 9465 4597 9465
      4630 9437
TIME...MOT...LOC 2308Z 236DEG 33KT 4620 9441 

$$

MNC097-162330-
/O.CON.KMPX.TO.W.0022.000000T0000Z-210916T2330Z/
Morrison MN-
608 PM CDT Thu Sep 16 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 PM CDT FOR
NORTHWESTERN MORRISON COUNTY...
    
At 608 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Fort Ripley, or 15 miles north of Little Falls,
moving northeast at 40 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur. Tree damage is 
         likely.

This tornadic thunderstorm will remain over mainly rural areas of
northwestern Morrison County, including the following locations...
Camp Ripley Junction, Crow Wing State Park and Sobieski.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4627 9434 4623 9440 4618 9437 4616 9438
      4615 9418 4583 9463 4584 9465 4597 9465
      4630 9437
TIME...MOT...LOC 2308Z 236DEG 33KT 4620 9441 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

BPH
878 
WWUS53 KMPX 162318
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
618 PM CDT Thu Sep 16 2021

MNC097-162327-
/O.CAN.KMPX.TO.W.0022.000000T0000Z-210916T2330Z/
Morrison MN-
618 PM CDT Thu Sep 16 2021

...THE TORNADO WARNING FOR NORTHWESTERN MORRISON COUNTY IS
CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until midnight CDT for central
Minnesota.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
the Twin Cities.

LAT...LON 4627 9434 4623 9440 4618 9437 4616 9438
      4615 9418 4583 9463 4584 9465 4597 9465
      4630 9437
TIME...MOT...LOC 2316Z 219DEG 43KT 4629 9430 

$$

BPH

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 16, 6:14 PM CDTSpecial Weather StatementMPXMorrison31 min
Sep 16, 6:25 PM CDTSevere Thunderstorm WarningMPXMorrison35 min
Sep 16, 6:26 PM CDTSevere Thunderstorm Warning Considerable damage threatMPXBenton, Morrison, Stearns49 min
Sep 16, 6:30 PM CDTSevere Thunderstorm WarningMPXChippewa, Kandiyohi, Swift45 min
Sep 16, 6:32 PM CDTSpecial Weather StatementMPXStearns43 min
Sep 16, 6:32 PM CDTTornado WarningMPXMille Lacs, Morrison43 min
Sep 16, 6:40 PM CDTSevere Thunderstorm WarningMPXChippewa, Lac qui Parle, Renville, Yellow Medicine35 min
Sep 16, 6:48 PM CDTSevere Thunderstorm WarningMPXStearns42 min

Nearby

Tornado Warnings in Minnesota, 2021Every tornado warning in 2021Tornadoes in 2021

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.