Alert archive / Minnesota / Tornado Warnings in 2019

Tornado Warning 56, NWS Twin Cities, MN

September 24, 2019Steele County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Sep 24, 2019, 7:13 PM CDT for Steele County, Minnesota. It was in force for 32 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 24, 2019, 7:13 PM CDT (00:13 UTC)
Expired: Sep 24, 2019, 7:45 PM CDT
In force: 32 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

County Steele County, MN

The radar

The Minneapolis radar (KMPX), 102 km from the middle of the area, began a volume at 00:12 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
Sep 24, 4:43 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 0.2 hours before the alert went out and 103 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: 1764 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 1238 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 113 m²/s²
0-3 km storm-relative helicity: 158 m²/s²
Significant tornado parameter: 1.5
Supercell composite: 10.5

Open this sounding in Storm Lab

The text

As transmitted.

068 
WFUS53 KMPX 250013
TORMPX
MNC147-250045-
/O.NEW.KMPX.TO.W.0056.190925T0013Z-190925T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Twin Cities/Chanhassen MN
713 PM CDT Tue Sep 24 2019

The National Weather Service in The Twin Cities has issued a

* Tornado Warning for...
  Southeastern Steele County in south central Minnesota...

* Until 745 PM CDT.
    
* At 713 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Ellendale, or 11 miles south of Owatonna, moving
  northeast at 45 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 tornadic thunderstorm will remain over mainly rural areas of
  southeastern Steele County, including the following locations...
  Steele Center and Bixby.

This includes the following highways...
 Interstate 35 between mile markers 29 and 35.
 U.S. Highway 14 between mile markers 177 and 182.

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 4393 9333 4419 9305 4394 9305 4386 9321
TIME...MOT...LOC 0013Z 223DEG 39KT 4393 9322 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

BORGHOFF

2 follow-up statements

909 
WWUS53 KMPX 250027
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
727 PM CDT Tue Sep 24 2019

MNC147-250045-
/O.CON.KMPX.TO.W.0056.000000T0000Z-190925T0045Z/
Steele MN-
727 PM CDT Tue Sep 24 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR
SOUTHEASTERN STEELE COUNTY...
    
At 727 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Blooming Prairie, or 13 miles south of Owatonna,
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 tornadic thunderstorm will remain over mainly rural areas of
southeastern Steele County, including the following locations...
Steele Center and Bixby.

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 4391 9326 4406 9306 4398 9305 4394 9305
      4386 9321
TIME...MOT...LOC 0027Z 237DEG 44KT 4391 9315 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

BORGHOFF

827 
WWUS53 KMPX 250040 RRA
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
740 PM CDT Tue Sep 24 2019

MNC147-250050-
/O.EXP.KMPX.TO.W.0056.000000T0000Z-190925T0045Z/
Steele MN-
740 PM CDT Tue Sep 24 2019

...THE TORNADO WARNING FOR SOUTHEASTERN STEELE COUNTY WILL EXPIRE AT
745 PM CDT...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.

A Tornado Watch remains in effect until midnight CDT for south
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 4391 9326 4406 9306 4398 9305 4394 9305
      4386 9321
TIME...MOT...LOC 0040Z 223DEG 39KT 4400 9303 

$$

BORGHOFF

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 24, 7:00 PM CDT	Tornado Warning	MPX	Goodhue	30 min
Sep 24, 7:03 PM CDT	Severe Thunderstorm Warning	MPX	Rice, Steele, Waseca	27 min
Sep 24, 7:16 PM CDT	Severe Thunderstorm Warning	MPX	Le Sueur, Scott	44 min
Sep 24, 7:34 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue	26 min
Sep 24, 8:14 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Washington	31 min

Nearby

Tornado Warnings in Minnesota, 2019 Every tornado warning in 2019 Tornadoes in 2019

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.