Alert archive / Minnesota / Tornado Warnings in 2021

Tornado Warning 11, NWS Twin Cities, MN

May 19, 2021Dakota County, Minnesota

NWS Twin Cities, MN issued this tornado warning at May 19, 2021, 9:58 PM CDT for Dakota County, Minnesota. It was in force for 17 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: May 19, 2021, 9:58 PM CDT (02:58 UTC)
Expired: May 19, 2021, 10:15 PM CDT
In force: 17 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Dakota County, MN

The radar

The Minneapolis radar (KMPX), 43 km from the middle of the area, began a volume at 03:01 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 00:00Z, 3.0 hours before the alert went out and 46 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 412 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 825 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 84 m²/s²
0-3 km storm-relative helicity: 92 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.4

Open this sounding in Storm Lab

The text

As transmitted.

233 
WFUS53 KMPX 200258
TORMPX
MNC037-200330-
/O.NEW.KMPX.TO.W.0011.210520T0258Z-210520T0330Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Twin Cities/Chanhassen MN
958 PM CDT Wed May 19 2021

The National Weather Service in the Twin Cities has issued a

* Tornado Warning for...
  Southwestern Dakota County in east central Minnesota...

* Until 1030 PM CDT.
    
* At 958 PM CDT, a severe thunderstorm capable of producing a tornado
  was located 6 miles south of Farmington, or 8 miles north of
  Northfield, moving north at 25 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...
  Farmington around 1010 PM CDT.

Other locations in the path of this tornadic thunderstorm include
Lakeville, Apple Valley and Rosemount.

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 4450 9312 4450 9319 4475 9324 4474 9305
TIME...MOT...LOC 0258Z 182DEG 23KT 4457 9316 

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

$$

JRB

3 follow-up statements

577 
WWUS53 KMPX 200306
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1006 PM CDT Wed May 19 2021

MNC037-200330-
/O.CON.KMPX.TO.W.0011.000000T0000Z-210520T0330Z/
Dakota MN-
1006 PM CDT Wed May 19 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1030 PM CDT FOR
SOUTHWESTERN DAKOTA COUNTY...
    
At 1005 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Farmington, or 11 miles north of Northfield, moving
north at 25 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...
  Farmington around 1010 PM CDT.

Other locations in the path of this tornadic thunderstorm include
Lakeville, Apple Valley and Rosemount.

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 4457 9311 4457 9319 4475 9324 4474 9305
TIME...MOT...LOC 0305Z 182DEG 23KT 4462 9316 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

JRB

189 
WWUS53 KMPX 200311
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1011 PM CDT Wed May 19 2021

MNC037-200330-
/O.CON.KMPX.TO.W.0011.000000T0000Z-210520T0330Z/
Dakota MN-
1011 PM CDT Wed May 19 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1030 PM CDT FOR WEST
CENTRAL DAKOTA COUNTY...
    
At 1011 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Farmington, or 14 miles north of Northfield, moving
north at 25 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.

Locations impacted include...
  Apple Valley and Rosemount.

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 4462 9311 4462 9317 4475 9323 4474 9305
TIME...MOT...LOC 0311Z 183DEG 23KT 4466 9314 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

JRB

463 
WWUS53 KMPX 200315
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1015 PM CDT Wed May 19 2021

MNC037-200325-
/O.CAN.KMPX.TO.W.0011.000000T0000Z-210520T0330Z/
Dakota MN-
1015 PM CDT Wed May 19 2021

...THE TORNADO WARNING FOR WEST CENTRAL DAKOTA COUNTY IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.

LAT...LON 4462 9311 4462 9317 4475 9323 4474 9305
TIME...MOT...LOC 0314Z 182DEG 23KT 4469 9314 

$$

JRB

The office that day

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

Issued	Product	Office	Counties	Lasted
May 19, 7:20 PM CDT	Tornado Warning	MPX	Steele, Waseca	25 min
May 19, 7:39 PM CDT	Tornado Warning	MPX	Rice	36 min
May 19, 7:58 PM CDT	Tornado Warning	MPX	Carver, Le Sueur, Scott, Sibley	34 min
May 19, 8:05 PM CDT	Tornado Warning	MPX	Rice	40 min
May 19, 8:25 PM CDT	Tornado Warning Tornado observed	MPX	Dakota, Scott	50 min

Nearby

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