Alert archive / Minnesota / Tornado Warnings in 2020

Tornado Warning 10, NWS Twin Cities, MN

July 8, 2020Todd County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Jul 8, 2020, 6:43 PM CDT for Todd County, Minnesota. It was in force for 19 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: Jul 8, 2020, 6:43 PM CDT (23:43 UTC)
Expired: Jul 8, 2020, 7:02 PM CDT
In force: 19 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Todd County, MN

The radar

The Minneapolis radar (KMPX), 194 km from the middle of the area, began a volume at 23:43 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
Jul 8, 4:15 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 11.7 hours before the alert went out and 193 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: 1297 J/kg
Mixed-layer CIN: -141 J/kg
Mixed-layer LCL: 1096 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 163 m²/s²
0-3 km storm-relative helicity: 291 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

854 
WFUS53 KMPX 082343
TORMPX
MNC153-090030-
/O.NEW.KMPX.TO.W.0010.200708T2343Z-200709T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Twin Cities/Chanhassen MN
643 PM CDT Wed Jul 8 2020

The National Weather Service in The Twin Cities has issued a

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

* Until 730 PM CDT.
    
* At 643 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Bertha, or 25 miles northeast of Alexandria,
  moving east at 20 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...
  Bertha and Hewitt around 655 PM CDT.

This includes U.S. Highway 71 between mile markers 207 and 219.
 
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 4636 9484 4623 9479 4618 9514 4637 9516
TIME...MOT...LOC 2343Z 250DEG 16KT 4624 9512 

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

$$

BPH

2 follow-up statements

696 
WWUS53 KMPX 082356
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
656 PM CDT Wed Jul 8 2020

MNC153-090030-
/O.CON.KMPX.TO.W.0010.000000T0000Z-200709T0030Z/
Todd MN-
656 PM CDT Wed Jul 8 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR
NORTHWESTERN TODD COUNTY...
    
At 655 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Bertha, or 29 miles northeast of Alexandria, moving
east at 20 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 Todd County.

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 4624 9479 4621 9514 4637 9516 4636 9484
TIME...MOT...LOC 2355Z 250DEG 16KT 4626 9504 

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

$$

BPH

681 
WWUS53 KMPX 090002
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
702 PM CDT Wed Jul 8 2020

MNC153-090012-
/O.CAN.KMPX.TO.W.0010.000000T0000Z-200709T0030Z/
Todd MN-
702 PM CDT Wed Jul 8 2020

...THE TORNADO WARNING FOR NORTHWESTERN TODD 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.

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

LAT...LON 4624 9479 4621 9514 4637 9516 4636 9484
TIME...MOT...LOC 0001Z 250DEG 16KT 4627 9500 

$$

BPH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 8, 2:39 AM CDT	Excessive Heat Warning	MPX	Anoka, Carver, Dakota, Hennepin, Ramsey, Scott and 1 more	17 hr
Jul 8, 3:40 AM CDT	Special Weather Statement	MPX	Swift	35 min
Jul 8, 5:17 AM CDT	Special Weather Statement	MPX	Douglas, Pope, Todd	43 min
Jul 8, 6:00 AM CDT	Special Weather Statement	MPX	Douglas, Todd	30 min
Jul 8, 6:13 AM CDT	Special Weather Statement	MPX	Pope	47 min
Jul 8, 6:29 AM CDT	Special Weather Statement	MPX	Morrison, Todd	46 min
Jul 8, 6:48 AM CDT	Special Weather Statement	MPX	Stearns	42 min
Jul 8, 7:08 AM CDT	Special Weather Statement	MPX	Benton, Isanti, Kanabec, Mille Lacs, Sherburne	67 min
Jul 8, 7:25 AM CDT	Special Weather Statement	MPX	Meeker, Wright	65 min
Jul 8, 8:18 AM CDT	Special Weather Statement	MPX	Anoka, Carver, Chisago, Hennepin, Ramsey, Scott and 1 more	57 min
Jul 8, 8:36 AM CDT	Special Weather Statement	MPX	Wright	24 min
Jul 8, 6:35 PM CDT	Special Weather Statement	MPX	Todd	25 min
Jul 8, 6:59 PM CDT	Severe Thunderstorm Warning	MPX	Morrison, Todd	31 min

Nearby

Tornado Warnings in Minnesota, 2020 Every tornado warning in 2020 Tornadoes 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.