Alert archive / Minnesota / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 56, NWS Twin Cities, MN

June 11, 20174 counties in Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 11, 2017, 7:21 AM CDT for 4 counties in Minnesota. It was in force for 54 min. 6 reports 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 11, 2017, 7:21 AM CDT (12:21 UTC)
Expired
Jun 11, 2017, 8:15 AM CDT
In force
54 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Tornado
Possible
Hail
1.0 in
Wind
70.0 mph

Counties McLeod County, MN, Meeker County, MN, Sibley County, MN, Wright County, MN

The radar

The Minneapolis radar (KMPX), 61 km from the middle of the area, began a volume at 12:25 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

TimeReportWhereRemark
Jun 11, 7:50 AM CDTTSTM WND GST 542 Ssw Hutchinson, MNCORRECTED TO TSTM WND GST. AWOS STATION HCD, HUTCHINSON AP.
Jun 11, 7:50 AM CDTNON-TSTM WND GST 542 Ssw Hutchinson, MNAWOS STATION HCD, HUTCHINSON AP.
Jun 11, 7:52 AM CDTTSTM WND DMG1 N Kingston, MN3 SHEDS DAMAGED AND 1 DESTROYED ALONG WITH SEVERAL TREES DOWN ALONG HIGHWAY 15 NORTH OF KINGSTON.
Jun 11, 7:55 AM CDTTSTM WND DMG2 W Brownton, MNSEVERAL LARGE TREE LIMBS DOWN AND A TREE UPROOTED IN THE BROWNTOWN AREA.
Jun 11, 8:00 AM CDTTSTM WND DMGHutchinson, MNNUMEROUS TREE BRANCHES AND LIMBS BLOWN DOWN, A FEW UP TO 12 INCHES IN DIAMETER.
Jun 11, 8:00 AM CDTTSTM WND GST 70Dassel, MNTRAINED SPOTTER VIA SOCIAL MEDIA.

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 11, 6:28 AM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 0.4 hours before the alert went out and 58 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 2017-06-11Temperature 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 2017-06-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 294 square meters per square second.19395878Sfc1 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
2213 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
294 m²/s²
0-3 km storm-relative helicity
318 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

Open this sounding in Storm Lab

The text

As transmitted.

326 
WUUS53 KMPX 111221
SVRMPX
MNC085-093-143-171-111315-
/O.NEW.KMPX.SV.W.0056.170611T1221Z-170611T1315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
721 AM CDT SUN JUN 11 2017

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Southwestern Wright County in central Minnesota...
  Eastern Meeker County in central Minnesota...
  Northern Sibley County in central Minnesota...
  McLeod County in central Minnesota...

* Until 815 AM CDT

* At 721 AM CDT, severe thunderstorms were located along a line
  extending from Atwater to 6 miles southwest of Hector, moving east
  at 60 mph.

  HAZARD...70 mph wind gusts and quarter size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Hail damage to vehicles is expected. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings. 

* Severe thunderstorms will be near,
  Litchfield and Stewart around 735 AM CDT. 
  Dassel and Brownton around 745 AM CDT. 
  Glencoe and Annandale around 755 AM CDT. 
  Green Isle around 800 AM CDT. 

Other locations impacted by these severe thunderstorms include
Litchfield Airport, South Haven, Glencoe Airport, Hutchinson Airport,
Smith Lake, Sumter, Greenleaf, Darwin, Biscay and French Lake.

This includes the following highways...
 U.S. Highway 12 between mile markers 99 and 126.
 U.S. Highway 212 between mile markers 102 and 126.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

This is an EXTREMELY DANGEROUS SITUATION. These storms are producing 
widespread wind damage across western Minnesota. SEEK SHELTER NOW 
inside a sturdy structure and stay away from windows!

&&

LAT...LON 4532 9439 4528 9436 4528 9427 4531 9425
      4530 9416 4532 9412 4499 9399 4472 9401
      4471 9398 4459 9397 4455 9462 4471 9463
      4472 9450 4501 9451 4533 9460
TIME...MOT...LOC 1221Z 261DEG 52KT 4514 9481 4467 9479 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...70MPH
 
$$

jrb
1 follow-up statement
446 
WWUS53 KMPX 111302
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
802 AM CDT SUN JUN 11 2017

MNC085-093-143-171-111315-
/O.CON.KMPX.SV.W.0056.000000T0000Z-170611T1315Z/
Wright MN-Meeker MN-Sibley MN-McLeod MN-
802 AM CDT SUN JUN 11 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 AM CDT
FOR SOUTHWESTERN WRIGHT...NORTHEASTERN MEEKER...NORTHERN SIBLEY AND
MCLEOD COUNTIES...

At 801 AM CDT, severe thunderstorms were located along a line
extending from near Maple Lake to Norwood Young America, moving east
at 60 mph.

HAZARD...70 mph wind gusts and quarter size hail. 

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is expected. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings. 

these severe thunderstorms will remain over mainly rural areas of
southwestern Wright...northeastern Meeker...northern Sibley and
McLeod Counties, including the following locations: Sumter, Biscay,
French Lake, South Haven, Fernando, Plato, Glencoe Airport,
Hutchinson Airport, Smith Lake and New Auburn.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

This is a DANGEROUS SITUATION. These storms are producing widespread 
wind damage across western Minnesota. SEEK SHELTER NOW inside a 
sturdy structure and stay away from windows.

&&

LAT...LON 4532 9439 4528 9436 4528 9427 4531 9425
      4530 9416 4532 9412 4499 9399 4472 9401
      4471 9398 4459 9397 4455 9462 4472 9450
      4498 9431 4525 9435
TIME...MOT...LOC 1301Z 261DEG 52KT 4523 9395 4476 9394 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...70MPH
 
$$

jrb

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 11, 5:56 AM CDTSevere Thunderstorm WarningMPXChippewa, Lac qui Parle, Swift, Yellow Medicine49 min
Jun 11, 6:09 AM CDTSevere Thunderstorm WarningMPXLac qui Parle, Swift36 min
Jun 11, 6:24 AM CDTSevere Thunderstorm WarningMPXChippewa, Swift66 min
Jun 11, 6:27 AM CDTSevere Thunderstorm WarningMPXRedwood, Renville, Yellow Medicine48 min
Jun 11, 6:50 AM CDTSevere Thunderstorm WarningMPXKandiyohi, Meeker, Redwood, Renville55 min
Jun 11, 7:05 AM CDTSevere Thunderstorm WarningMPXBrown, Redwood55 min
Jun 11, 7:34 AM CDTTornado WarningMPXKandiyohi, Meeker26 min
Jun 11, 7:38 AM CDTSevere Thunderstorm WarningMPXStearns, Wright52 min
Jun 11, 7:50 AM CDTSevere Thunderstorm WarningMPXCarver, Hennepin, Wright55 min
Jun 11, 7:56 AM CDTSpecial Weather StatementMPXChippewa, Lac qui Parle, Pope, Stevens, Swift, Yellow Medicine109 min
Jun 11, 8:00 AM CDTSpecial Weather StatementMPXBrown45 min
Jun 11, 8:05 AM CDTSpecial Weather StatementMPXBenton, Morrison, Sherburne40 min
Jun 11, 8:10 AM CDTSevere Thunderstorm WarningMPXLe Sueur, McLeod, Scott, Sibley50 min
Jun 11, 8:24 AM CDTSpecial Weather StatementMPXNicollet51 min
Jun 11, 8:27 AM CDTSevere Thunderstorm WarningMPXAnoka, Dakota, Hennepin, Ramsey, Scott48 min
Jun 11, 8:38 AM CDTSpecial Weather StatementMPXChisago, Isanti67 min
Jun 11, 8:50 AM CDTSevere Thunderstorm WarningMPXDakota, Washington40 min
Jun 11, 9:00 AM CDTSpecial Weather StatementMPXGoodhue, Le Sueur, Rice60 min
Jun 11, 9:02 AM CDTSevere Thunderstorm WarningMPXAnoka, Chisago, Washington28 min
Jun 11, 9:37 AM CDTSevere Thunderstorm WarningMPXGoodhue38 min
Jun 11, 9:41 AM CDTSpecial Weather StatementMPXBenton, Douglas, Morrison, Pope, Stearns, Todd109 min
Jun 11, 4:08 PM CDTSpecial Weather StatementMPXWright37 min
Jun 11, 4:27 PM CDTSpecial Weather StatementMPXIsanti33 min
Jun 11, 5:11 PM CDTSpecial Weather StatementMPXWright34 min
Jun 11, 5:57 PM CDTSpecial Weather StatementMPXRamsey33 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2017Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.