Alert archive / Minnesota / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 68, NWS Twin Cities, MN

June 12, 2017Martin County, Watonwan County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 12, 2017, 11:57 AM CDT for Martin County, Watonwan County, Minnesota. It was in force for 33 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: Jun 12, 2017, 11:57 AM CDT (16:57 UTC)
Expired: Jun 12, 2017, 12:30 PM CDT
In force: 33 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Martin County, MN, Watonwan County, MN

The radar

The Minneapolis radar (KMPX), 144 km from the middle of the area, began a volume at 16:56 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
Jun 12, 11:47 AM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 5.0 hours before the alert went out and 142 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: 1135 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: -73 m²/s²
0-3 km storm-relative helicity: 43 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

417 
WUUS53 KMPX 121657
SVRMPX
MNC091-165-121730-
/O.NEW.KMPX.SV.W.0068.170612T1657Z-170612T1730Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
1157 AM CDT MON JUN 12 2017

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Martin County in south central Minnesota...
  Watonwan County in south central Minnesota...

* Until 1230 PM CDT

* At 1156 AM CDT, severe thunderstorms were located along a line
  extending from near Alpha to Ceylon to Armstrong, moving north at
  45 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. 

* Locations impacted include...
  Fairmont, St. James, Sherburn, Truman, Trimont, Welcome,
  Butterfield, Ceylon, Lewisville, Iowa Lake, Okamanpedan Lake and
  Granada.

This includes Interstate 90 between mile markers 81 and 112.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4350 9470 4358 9486 4406 9486 4405 9467
      4397 9443 4387 9436 4385 9436 4384 9434
      4372 9424 4352 9425 4349 9427
TIME...MOT...LOC 1656Z 196DEG 41KT 4363 9483 4353 9461 4339 9452 

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

1 follow-up statement

018 
WWUS53 KMPX 121715
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1215 PM CDT MON JUN 12 2017

MNC091-165-121730-
/O.CON.KMPX.SV.W.0068.000000T0000Z-170612T1730Z/
Martin MN-Watonwan MN-
1215 PM CDT MON JUN 12 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 PM CDT
FOR MARTIN AND WATONWAN COUNTIES...

At 1215 PM CDT, severe thunderstorms were located along a line
extending from near Odin to near Trimont to Fairmont to near Iowa
Lake, moving northeast at 40 mph.

HAZARD...60 mph wind gusts and half dollar size hail. 

SOURCE...Radar indicated. 

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

Locations impacted include...
Fairmont, St. James, Sherburn, Truman, Trimont, Welcome, Butterfield,
Ceylon, Lewisville, Iowa Lake, Okamanpedan Lake and Granada.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4350 9465 4361 9471 4370 9486 4405 9485
      4404 9466 4396 9442 4387 9436 4385 9436
      4385 9435 4384 9435 4383 9433 4372 9424
      4352 9425 4349 9427 4350 9461
TIME...MOT...LOC 1715Z 207DEG 34KT 4380 9481 4376 9466 4361 9449 4352
9443

HAIL...1.25IN
WIND...60MPH
 
$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 10:59 PM CDT	Dense Fog Advisory	MPX	Anoka, Benton, Brown, Carver, Chippewa, Chisago and 24 more	9 hr
Jun 12, 8:48 AM CDT	Special Weather Statement	MPX	Blue Earth	27 min
Jun 12, 9:10 AM CDT	Special Weather Statement	MPX	Waseca	35 min
Jun 12, 10:42 AM CDT	Special Weather Statement	MPX	Steele	33 min
Jun 12, 11:11 AM CDT	Special Weather Statement	MPX	Martin	49 min
Jun 12, 11:34 AM CDT	Special Weather Statement	MPX	Blue Earth	56 min
Jun 12, 11:48 AM CDT	Special Weather Statement	MPX	Freeborn	57 min
Jun 12, 12:29 PM CDT	Special Weather Statement	MPX	Blue Earth, Brown	46 min
Jun 12, 12:31 PM CDT	Special Weather Statement	MPX	Faribault	44 min
Jun 12, 12:42 PM CDT	Special Weather Statement	MPX	Blue Earth	48 min
Jun 12, 12:54 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Waseca	36 min
Jun 12, 1:09 PM CDT	Special Weather Statement	MPX	Freeborn	51 min
Jun 12, 1:24 PM CDT	Severe Thunderstorm Warning	MPX	Rice, Steele, Waseca	36 min
Jun 12, 1:34 PM CDT	Special Weather Statement	MPX	Le Sueur, Rice	26 min
Jun 12, 1:51 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue, Rice	39 min
Jun 12, 2:42 PM CDT	Special Weather Statement	MPX	Steele	18 min
Jun 12, 3:00 PM CDT	Special Weather Statement	MPX	Faribault	45 min
Jun 12, 3:14 PM CDT	Special Weather Statement	MPX	Freeborn	46 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.