Alert archive / Minnesota / Tornado Warnings in 2019

Tornado Warning 21, NWS Sioux Falls, SD

August 10, 2019Cottonwood County, Jackson County, Minnesota

NWS Sioux Falls, SD issued this tornado warning at Aug 10, 2019, 6:15 PM CDT for Cottonwood County, Jackson County, Minnesota. It was in force for 30 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
Aug 10, 2019, 6:15 PM CDT (23:15 UTC)
Expired
Aug 10, 2019, 6:45 PM CDT
In force
30 min
Issued by
NWS Sioux Falls, SD
Area
Storm-based polygon
Tornado
Observed
Hail
0.0 in

Counties Cottonwood County, MN, Jackson County, MN

The radar

The Sioux Falls radar (KFSD), 141 km from the middle of the area, began a volume at 23:18 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, 11.3 hours before the alert went out and 158 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 2019-08-10Temperature 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 2019-08-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 13 square meters per square second.1939587897Sfc1 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
1399 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
13 m²/s²
0-3 km storm-relative helicity
78 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

005 
WFUS53 KFSD 102315
TORFSD
MNC033-063-102345-
/O.NEW.KFSD.TO.W.0021.190810T2315Z-190810T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Sioux Falls SD
615 PM CDT Sat Aug 10 2019

The National Weather Service in Sioux Falls has issued a

* Tornado Warning for...
  Northeastern Jackson County in southwestern Minnesota...
  Southeastern Cottonwood County in southwestern Minnesota...

* Until 645 PM CDT.

* At 614 PM CDT, a confirmed tornado was located over Bingham Lake,
  or over Windom, moving east at 10 mph.

  HAZARD...Damaging tornado.

  SOURCE...Weather spotters confirmed tornado.

  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.

* The tornado will be near...
  Bingham Lake around 620 PM CDT.
  Mountain Lake and Bergen around 645 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. 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 4383 9519 4397 9514 4393 9486 4383 9485
      4376 9486
TIME...MOT...LOC 2314Z 286DEG 9KT 4389 9508 

TORNADO...OBSERVED
HAIL...0.00IN

$$

Kalin
1 follow-up statement
110 
WWUS53 KFSD 102328
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
628 PM CDT Sat Aug 10 2019

MNC033-063-102345-
/O.CON.KFSD.TO.W.0021.000000T0000Z-190810T2345Z/
Jackson MN-Cottonwood MN-
628 PM CDT Sat Aug 10 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR
NORTHEASTERN JACKSON AND SOUTHEASTERN COTTONWOOD COUNTIES...
    
At 627 PM CDT, a confirmed tornado was located north of Bergen, or 
near Windom, moving east at 20 mph.

HAZARD...Damaging tornado.

SOURCE...Weather spotters confirmed tornado.

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
northeastern Jackson and southeastern Cottonwood Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. 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 4381 9510 4393 9506 4393 9486 4383 9485
      4376 9486
TIME...MOT...LOC 2327Z 285DEG 18KT 4384 9500 

TORNADO...OBSERVED
HAIL...0.00IN

$$

Kalin

The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 10, 6:45 PM CDTTornado WarningFSDCottonwood, Jackson16 min

Nearby

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