Alert archive / Minnesota / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 2, NWS Twin Cities, MN

March 6, 2017Blue Earth County, Brown County, Watonwan County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Mar 6, 2017, 4:10 PM CST for Blue Earth County, Brown County, Watonwan County, Minnesota. It was in force for 35 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: Mar 6, 2017, 4:10 PM CST (22:10 UTC)
Expired: Mar 6, 2017, 4:45 PM CST
In force: 35 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Blue Earth County, MN, Brown County, MN, Watonwan County, MN

The radar

The Minneapolis radar (KMPX), 113 km from the middle of the area, began a volume at 22:11 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
Mar 6, 2:43 PM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.2 hours before the alert went out and 111 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: 622 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 401 m²/s²
0-3 km storm-relative helicity: 365 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

787 
WUUS53 KMPX 062210
SVRMPX
MNC013-015-165-062245-
/O.NEW.KMPX.SV.W.0002.170306T2210Z-170306T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
410 PM CST MON MAR 6 2017

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Southeastern Brown County in south central Minnesota...
  Northwestern Blue Earth County in south central Minnesota...
  Watonwan County in south central Minnesota...

* Until 445 PM CST

* At 410 PM CST, a severe thunderstorm was located over Echols, or 20
  miles east of Windom, moving northeast at 50 mph.

  HAZARD...60 mph wind gusts and quarter size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees. 

* This severe thunderstorm will be near,
  St. James around 415 PM CST. 
  Madelia around 430 PM CST. 
  Hanska around 435 PM CST. 
  New Ulm and Courtland around 445 PM CST. 

Other locations impacted by this severe thunderstorm include Grogan,
Ormsby, Searles, La Salle, Echols and Odin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

A tornado watch remains in effect until 1000 PM CST for south central
Minnesota.

LAT...LON 4385 9479 4389 9486 4392 9486 4435 9448
      4427 9441 4426 9433 4421 9424 4422 9422
      4420 9422 4419 9418 4384 9462
TIME...MOT...LOC 2210Z 216DEG 45KT 4391 9472 

HAIL...1.00IN
WIND...60MPH
 
$$

2 follow-up statements

383 
WWUS53 KMPX 062223
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
423 PM CST MON MAR 6 2017

MNC013-015-165-062245-
/O.CON.KMPX.SV.W.0002.000000T0000Z-170306T2245Z/
Brown MN-Blue Earth MN-Watonwan MN-
423 PM CST MON MAR 6 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM CST
FOR SOUTHEASTERN BROWN...NORTHWESTERN BLUE EARTH AND EASTERN WATONWAN
COUNTIES...

At 423 PM CST, a severe thunderstorm was located over La Salle, or 19
miles south of New Ulm, moving northeast at 50 mph.

HAZARD...60 mph wind gusts and quarter size hail. 

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees. 

This severe storm will be near...
  Madelia around 430 PM CST. 
  Hanska around 435 PM CST. 
  New Ulm and Courtland around 445 PM CST. 

Other locations impacted by this severe thunderstorm include Grogan, 
Searles and La Salle.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

A tornado watch remains in effect until 1000 PM CST for south central
Minnesota.

LAT...LON 4435 9448 4427 9441 4426 9433 4421 9424
      4422 9422 4420 9422 4419 9418 4388 9456
      4399 9461 4414 9466
TIME...MOT...LOC 2223Z 216DEG 45KT 4405 9458 

HAIL...1.00IN
WIND...60MPH
 
$$

610 
WWUS53 KMPX 062241
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
441 PM CST MON MAR 6 2017

MNC013-015-165-062251-
/O.EXP.KMPX.SV.W.0002.000000T0000Z-170306T2245Z/
Brown MN-Blue Earth MN-Watonwan MN-
441 PM CST MON MAR 6 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BROWN...
NORTHWESTERN BLUE EARTH AND EASTERN WATONWAN COUNTIES WILL EXPIRE AT
445 PM CST...
        
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 1000 PM CST for south central
Minnesota.

LAT...LON 4435 9448 4427 9441 4426 9433 4421 9424
      4422 9422 4420 9422 4419 9418 4388 9456
      4399 9461 4414 9466
TIME...MOT...LOC 2241Z 216DEG 45KT 4422 9441 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 6, 4:04 AM CST	Wind Advisory	MPX	Anoka, Benton, Blue Earth, Brown, Carver, Chippewa and 36 more	60 hr
Mar 6, 3:47 PM CST	Severe Thunderstorm Warning	MPX	Redwood, Renville, Sibley	43 min
Mar 6, 4:28 PM CST	Severe Thunderstorm Warning	MPX	Benton, Morrison, Stearns	47 min
Mar 6, 4:32 PM CST	Severe Thunderstorm Warning	MPX	Faribault, Martin	43 min
Mar 6, 4:41 PM CST	Severe Thunderstorm Warning	MPX	McLeod, Meeker, Wright	34 min
Mar 6, 4:50 PM CST	Tornado Warning	MPX	Wright	25 min
Mar 6, 4:54 PM CST	Severe Thunderstorm Warning	MPX	Faribault, Freeborn	21 min
Mar 6, 5:09 PM CST	Severe Thunderstorm Warning	MPX	Blue Earth, Faribault, Freeborn, Steele, Waseca	36 min
Mar 6, 5:11 PM CST	Severe Thunderstorm Warning	MPX	Sherburne, Wright	34 min
Mar 6, 5:26 PM CST	Tornado Warning	MPX	Sherburne, Wright	20 min
Mar 6, 5:42 PM CST	Severe Thunderstorm Warning	MPX	Freeborn, Steele, Waseca	33 min
Mar 6, 5:44 PM CST	Tornado Warning	MPX	Isanti, Mille Lacs, Sherburne	31 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2017 Every severe thunderstorm warning in 2017

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.