Alert archive / Minnesota / Tornado Warnings in 2019

Tornado Warning 51, NWS Twin Cities, MN

September 21, 2019Benton County, Sherburne County, Stearns County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Sep 21, 2019, 3:36 PM CDT for Benton County, Sherburne County, Stearns County, Minnesota. It was in force for 29 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 21, 2019, 3:36 PM CDT (20:36 UTC)
Expired: Sep 21, 2019, 4:05 PM CDT
In force: 29 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Benton County, MN, Sherburne County, MN, Stearns County, MN

The radar

The Minneapolis radar (KMPX), 87 km from the middle of the area, began a volume at 20:35 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, 8.6 hours before the alert went out and 86 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: 331 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 671 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 255 m²/s²
0-3 km storm-relative helicity: 247 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 5.6

Open this sounding in Storm Lab

The text

As transmitted.

790 
WFUS53 KMPX 212036
TORMPX
MNC009-141-145-212115-
/O.NEW.KMPX.TO.W.0051.190921T2036Z-190921T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Twin Cities/Chanhassen MN
336 PM CDT Sat Sep 21 2019

The National Weather Service in The Twin Cities has issued a

* Tornado Warning for...
  South central Benton County in central Minnesota...
  Northwestern Sherburne County in central Minnesota...
  East central Stearns County in central Minnesota...

* Until 415 PM CDT.
    
* At 336 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Waite Park, or near St. Cloud, moving northeast 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...
  Sauk Rapids around 350 PM CDT.

Other locations impacted by this tornadic thunderstorm include Duelm,
Parent and St Cloud Airport.

This includes the following highways...
 Interstate 94 in Minnesota between mile markers 167 and 171.
 U.S. Highway 10 in Minnesota between mile markers 178 and 183.

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 4547 9419 4550 9424 4567 9401 4556 9390
TIME...MOT...LOC 2036Z 237DEG 20KT 4552 9418 

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

$$

JRB

4 follow-up statements

592 
WWUS53 KMPX 212042
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
342 PM CDT Sat Sep 21 2019

MNC145-212052-
/O.CAN.KMPX.TO.W.0051.000000T0000Z-190921T2115Z/
Stearns MN-
342 PM CDT Sat Sep 21 2019

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

LAT...LON 4556 9390 4552 9414 4553 9415 4557 9415
      4567 9401
TIME...MOT...LOC 2042Z 236DEG 22KT 4555 9412 

$$

MNC009-141-212115-
/O.CON.KMPX.TO.W.0051.000000T0000Z-190921T2115Z/
Benton MN-Sherburne MN-
342 PM CDT Sat Sep 21 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 PM CDT FOR SOUTH
CENTRAL BENTON AND NORTHWESTERN SHERBURNE COUNTIES...
    
At 342 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Sauk Rapids, or near St. Cloud, moving northeast 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 tornadic thunderstorm will remain over mainly rural areas of
south central Benton and northwestern Sherburne Counties, including
the following locations... Duelm, Parent and St Cloud Airport.

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 4556 9390 4552 9414 4553 9415 4557 9415
      4567 9401
TIME...MOT...LOC 2042Z 236DEG 22KT 4555 9412 

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

$$

JRB

037 
WWUS53 KMPX 212049
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
349 PM CDT Sat Sep 21 2019

MNC141-212059-
/O.CAN.KMPX.TO.W.0051.000000T0000Z-190921T2115Z/
Sherburne MN-
349 PM CDT Sat Sep 21 2019

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

LAT...LON 4557 9391 4555 9400 4556 9410 4557 9412
      4566 9400
TIME...MOT...LOC 2049Z 236DEG 28KT 4558 9404 

$$

MNC009-212115-
/O.CON.KMPX.TO.W.0051.000000T0000Z-190921T2115Z/
Benton MN-
349 PM CDT Sat Sep 21 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 PM CDT FOR SOUTH
CENTRAL BENTON COUNTY...
    
At 349 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Sauk Rapids, or 7 miles east of St. Cloud, moving
northeast at 30 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...
St. Cloud, Sauk Rapids and Parent. 

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 4557 9391 4555 9400 4556 9410 4557 9412
      4566 9400
TIME...MOT...LOC 2049Z 236DEG 28KT 4558 9404 

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

$$

JRB

580 
WWUS53 KMPX 212055
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
355 PM CDT Sat Sep 21 2019

MNC009-212115-
/O.CON.KMPX.TO.W.0051.000000T0000Z-190921T2115Z/
Benton MN-
355 PM CDT Sat Sep 21 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 PM CDT FOR SOUTH
CENTRAL BENTON COUNTY...
    
At 355 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Foley, or 10 miles east of St. Cloud, moving
northeast 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...
Parent.

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 4557 9391 4556 9397 4556 9404 4558 9406
      4564 9398
TIME...MOT...LOC 2055Z 240DEG 20KT 4559 9399 

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

$$

JRB

585 
WWUS53 KMPX 212105
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
405 PM CDT Sat Sep 21 2019

MNC009-212114-
/O.CAN.KMPX.TO.W.0051.000000T0000Z-190921T2115Z/
Benton MN-
405 PM CDT Sat Sep 21 2019

...THE TORNADO WARNING FOR SOUTH CENTRAL BENTON COUNTY IS
CANCELLED...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.

LAT...LON 4557 9391 4556 9397 4556 9404 4558 9406
      4564 9398
TIME...MOT...LOC 2103Z 237DEG 20KT 4562 9392 

$$

JRB

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 21, 10:44 AM CDT	Special Weather Statement	MPX	Kanabec	16 min
Sep 21, 3:11 PM CDT	Special Weather Statement	MPX	Benton, Morrison	94 min
Sep 21, 4:00 PM CDT	Severe Thunderstorm Warning	MPX	Kanabec, Mille Lacs	45 min
Sep 21, 4:06 PM CDT	Tornado Warning	MPX	Kanabec, Mille Lacs	21 min
Sep 21, 4:35 PM CDT	Special Weather Statement	MPX	Mille Lacs	55 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.