Alert archive / Minnesota / Tornado Warnings in 2019

Tornado Warning 8, NWS Twin Cities, MN

June 20, 2019Brown County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Jun 20, 2019, 6:27 PM CDT for Brown County, Minnesota. It was in force for 33 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 20, 2019, 6:27 PM CDT (23:27 UTC)
Expired: Jun 20, 2019, 7:00 PM CDT
In force: 33 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Brown County, MN

The radar

The Minneapolis radar (KMPX), 125 km from the middle of the area, began a volume at 23:27 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.

What was reported inside it

Time	Report	Where	Remark
Jun 20, 6:27 PM CDT	TORNADO	6 Sse Cobden, MN	TORNADO MOSTLY MOVED ACROSS FIELDS, BUT DID HIT A FEW GROVES OF TREES AND ONE FARMSTEAD, WHERE MINOR DAMAGE OCCURRED TO A FEW OUTBUILDINGS. PATH LENGTH ABOUT 3 MILES.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 11.5 hours before the alert went out and 123 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1592 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: -31 m²/s²
0-3 km storm-relative helicity: 1 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

051 
WFUS53 KMPX 202327
TORMPX
MNC015-210000-
/O.NEW.KMPX.TO.W.0008.190620T2327Z-190621T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Twin Cities/Chanhassen MN
627 PM CDT Thu Jun 20 2019

The National Weather Service in The Twin Cities has issued a

* Tornado Warning for...
  Southwestern Brown County in south central Minnesota...

* Until 700 PM CDT.
    
* At 626 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Springfield, or 21 miles west of New Ulm, moving
  southeast 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
  southwestern Brown 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 4422 9495 4426 9485 4412 9465 4411 9467
      4411 9488
TIME...MOT...LOC 2326Z 317DEG 21KT 4421 9487 

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

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 20, 3:34 PM CDT	Special Weather Statement	MPX	Yellow Medicine	26 min
Jun 20, 3:40 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Yellow Medicine	35 min
Jun 20, 4:12 PM CDT	Severe Thunderstorm Warning	MPX	Yellow Medicine	33 min
Jun 20, 4:45 PM CDT	Severe Thunderstorm Warning	MPX	Redwood, Renville, Yellow Medicine	45 min
Jun 20, 4:55 PM CDT	Special Weather Statement	MPX	Brown	50 min
Jun 20, 5:16 PM CDT	Tornado Warning	MPX	Redwood	29 min
Jun 20, 5:24 PM CDT	Severe Thunderstorm Warning	MPX	Brown, Redwood	36 min
Jun 20, 5:37 PM CDT	Tornado Warning Tornado observed	MPX	Redwood	23 min
Jun 20, 5:55 PM CDT	Severe Thunderstorm Warning	MPX	Brown	50 min
Jun 20, 6:10 PM CDT	Severe Thunderstorm Warning	MPX	Redwood	20 min
Jun 20, 6:29 PM CDT	Severe Thunderstorm Warning	MPX	Brown, Watonwan	46 min
Jun 20, 6:37 PM CDT	Areal Flood Warning	MPX	Brown, Redwood	3 hr
Jun 20, 6:43 PM CDT	Tornado Warning Tornado observed	MPX	Watonwan	32 min
Jun 20, 6:46 PM CDT	Severe Thunderstorm Warning	MPX	Watonwan	29 min
Jun 20, 6:56 PM CDT	Tornado Warning	MPX	Watonwan	34 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.