Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 61, NWS Twin Cities, MN

June 11, 2017Pierce County, Polk County, Saint Croix County, Wisconsin; Dakota County, Washington County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 11, 2017, 8:50 AM CDT for Pierce County, Polk County, Saint Croix County, Wisconsin; Dakota County, Washington County, Minnesota. It was in force for 40 min. 13 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, 8:50 AM CDT (13:50 UTC)
Expired: Jun 11, 2017, 9:30 AM CDT
In force: 40 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Dakota County, MN, Washington County, MN, Pierce County, WI, Polk County, WI, Saint Croix County, WI

The radar

The Minneapolis radar (KMPX), 67 km from the middle of the area, began a volume at 13:50 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 11, 9:05 AM CDT	HAIL 1	Hugo, MN	SOCIAL MEDIA.
Jun 11, 9:15 AM CDT	TSTM WND DMG	1 Nne Hudson, WI	LARGE TREES DOWN. GAS LINE LEAK.
Jun 11, 9:15 AM CDT	TSTM WND DMG	1 Nne Hudson, WI	SEVERAL TREES BLOW DOWN AND UPROOTED. GAS LINE LEAKING AS WELL.
Jun 11, 9:15 AM CDT	HAIL 1	1 Nw Bayport, MN
Jun 11, 9:15 AM CDT	HAIL 2	2 N Somerset, WI
Jun 11, 9:20 AM CDT	TSTM WND DMG	2 S Dresser, WI	12 INCH DIAMETER TREE BRANCH DOWN.
Jun 11, 9:25 AM CDT	HAIL 0.75	Hudson, WI
Jun 11, 9:25 AM CDT	HAIL 1	New Richmond, WI
Jun 11, 9:25 AM CDT	HAIL 1.25	3 S New Richmond, WI
Jun 11, 9:30 AM CDT	HAIL 1.25	2 E Forest Lake, MN	SOCIAL MEDIA.
Jun 11, 9:30 AM CDT	HAIL 1.75	4 S Hammond, WI
Jun 11, 9:30 AM CDT	HAIL 1.75	New Richmond, WI
Jun 11, 9:40 AM CDT	HAIL 1.25	3 Sse Deer Park, WI	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.

Issued	Product	Office	Lasted
Jun 11, 6:28 AM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 1.8 hours before the alert went out and 70 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: 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.

975 
WUUS53 KMPX 111350
SVRMPX
MNC037-163-WIC093-095-109-111430-
/O.NEW.KMPX.SV.W.0061.170611T1350Z-170611T1430Z/

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

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  East central Dakota County in east central Minnesota...
  Washington County in east central Minnesota...
  Western Pierce County in west central Wisconsin...
  St. Croix County in west central Wisconsin...
  South central Polk County in northwestern Wisconsin...

* Until 930 AM CDT

* At 850 AM CDT, severe thunderstorms were located along a line
  extending from near East Bethel to South St. Paul, moving east at
  60 mph.

  HAZARD...Ping pong ball size hail and 60 mph wind gusts. 

  SOURCE...Law enforcement. 

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees. 

* Severe thunderstorms will be near,
  Forest Lake around 855 AM CDT. 
  Afton around 900 AM CDT. 
  Hudson, North Hudson and Bayport around 905 AM CDT. 
  River Falls and Osceola around 910 AM CDT. 
  Roberts and Dresser around 915 AM CDT. 
  Hammond around 920 AM CDT. 
  Baldwin around 925 AM CDT. 

Other locations impacted by these severe thunderstorms include
Otisville, Vermillion, Lake St Croix Beach, Willernie, Lakeland
Shores, Boardman, Huntington, Wanderoos, Oak Park Heights and Pine
Springs.

This includes the following highways...
 Interstate 35 between mile markers 131 and 132.
 Interstate 94 in Wisconsin between mile markers 1 and 20.
 U.S. Highway 8 in Minnesota between mile markers 0 and 1.
 U.S. Highway 61 near mile marker 165.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4465 9236 4462 9262 4464 9262 4471 9273
      4463 9273 4463 9279 4460 9279 4457 9301
      4512 9298 4513 9301 4529 9301 4530 9274
      4536 9269 4543 9233
TIME...MOT...LOC 1350Z 253DEG 53KT 4534 9312 4486 9303 

HAIL...1.50IN
WIND...60MPH
 
$$

jrb

2 follow-up statements

182 
WWUS53 KMPX 111409
SVSMPX

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

MNC037-111418-
/O.CAN.KMPX.SV.W.0061.000000T0000Z-170611T1430Z/
Dakota MN-
909 AM CDT SUN JUN 11 2017

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL DAKOTA COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A severe thunderstorm watch remains in effect until noon CDT for east
central Minnesota...and northwestern and west central Wisconsin.

LAT...LON 4484 9235 4476 9274 4475 9286 4477 9288
      4478 9293 4477 9297 4478 9298 4512 9298
      4513 9301 4529 9301 4530 9274 4536 9269
      4543 9233
TIME...MOT...LOC 1408Z 260DEG 50KT 4535 9278 4487 9270 

$$

MNC163-WIC093-095-109-111430-
/O.CON.KMPX.SV.W.0061.000000T0000Z-170611T1430Z/
Washington MN-Pierce WI-St. Croix WI-Polk WI-
909 AM CDT SUN JUN 11 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 AM CDT
FOR WASHINGTON...NORTHWESTERN PIERCE...ST. CROIX AND SOUTH CENTRAL
POLK COUNTIES...

At 908 AM CDT, severe thunderstorms were located along a line
extending from near Shafer to near Kinnickinnic State Park, moving
east at 55 mph.

HAZARD...Golf ball size hail and 70 mph wind gusts. 

SOURCE...Law enforcement reported golf ball hail and wind damage.  

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect 
         considerable tree damage. Wind damage is also likely to 
         mobile homes, roofs, and outbuildings. 

These severe storms will be near...
  Roberts and Dresser around 915 AM CDT. 
  Baldwin and Hammond around 925 AM CDT. 
  Amery around 930 AM CDT. 

Other locations impacted by these severe thunderstorms include
Otisville, Lake St Croix Beach, Willernie, Lakeland Shores, Boardman,
Huntington, Wanderoos, Oak Park Heights, Pine Springs and Deer Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4484 9235 4476 9274 4475 9286 4477 9288
      4478 9293 4477 9297 4478 9298 4512 9298
      4513 9301 4529 9301 4530 9274 4536 9269
      4543 9233
TIME...MOT...LOC 1408Z 260DEG 50KT 4535 9278 4487 9270 

HAIL...1.75IN
WIND...70MPH
 
$$

jrb

537 
WWUS53 KMPX 111411 CCA
SVSMPX

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

MNC037-111418-
/O.COR.KMPX.SV.W.0061.000000T0000Z-170611T1430Z/
Dakota MN-
911 AM CDT SUN JUN 11 2017

...THE SEVERE THUNDERSTORM WARNING FOR DAKOTA COUNTY IS CANCELLED...

The storms which prompted the warning have  moved out of the warned 
area. Therefore, the warning has been cancelled.

A severe thunderstorm watch remains in effect until noon CDT for east
central Minnesota...and northwestern and west central Wisconsin.

LAT...LON 4484 9235 4476 9274 4475 9286 4477 9288
      4478 9293 4477 9297 4478 9298 4512 9298
      4513 9301 4529 9301 4530 9274 4536 9269
      4543 9233
TIME...MOT...LOC 1408Z 270DEG 50KT 4535 9278 4487 9270 

$$

MNC163-WIC093-095-109-111430-
/O.COR.KMPX.SV.W.0061.000000T0000Z-170611T1430Z/
Washington MN-Pierce WI-St. Croix WI-Polk WI-
911 AM CDT SUN JUN 11 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 AM CDT
FOR WASHINGTON...NORTHWESTERN PIERCE...ST. CROIX AND SOUTH CENTRAL
POLK COUNTIES...

At 910 AM CDT, severe thunderstorms were located along a line
extending from near Shafer to near River Falls, moving east at 60
mph.

HAZARD...Tennis ball size hail and 70 mph wind gusts. 

SOURCE...Law enforcement extensive damage with this storm. 

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect 
         considerable tree damage. Wind damage is also likely to 
         mobile homes, roofs, and outbuildings. 

These severe storms will be near...
  River Falls and Roberts around 915 AM CDT. 
  Hammond around 920 AM CDT. 
  Baldwin around 925 AM CDT. 
  Amery around 930 AM CDT. 

Other locations impacted by these severe thunderstorms include
Otisville, Lake St Croix Beach, Willernie, Lakeland Shores, Boardman,
Huntington, Wanderoos, Oak Park Heights, Pine Springs and Deer Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

These are dangerous storms. Prepare immediately for large destructive
hail capable of producing significant damage. People outside should
move to a shelter, inside a strong building and away from windows.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4484 9235 4476 9274 4475 9286 4477 9288
      4478 9293 4477 9297 4478 9298 4512 9298
      4513 9301 4529 9301 4530 9274 4536 9269
      4543 9233
TIME...MOT...LOC 1408Z 270DEG 50KT 4535 9278 4487 9270 

HAIL...2.50IN
WIND...70MPH
 
$$

jrb

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 9:25 AM CDT	Severe Thunderstorm Warning	MPX	Barron, Dunn, Polk, Saint Croix	65 min
Jun 11, 9:37 AM CDT	Severe Thunderstorm Warning	MPX	Pepin, Pierce	38 min
Jun 11, 9:58 AM CDT	Tornado Warning	MPX	Pepin, Pierce	32 min
Jun 11, 10:03 AM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Rusk	57 min
Jun 11, 10:04 AM CDT	Severe Thunderstorm Warning	MPX	Dunn, Eau Claire, Pepin	56 min
Jun 11, 11:00 AM CDT	Special Weather Statement	MPX	Eau Claire	45 min
Jun 11, 1:44 PM CDT	Special Weather Statement	MPX	Barron	61 min
Jun 11, 6:17 PM CDT	Special Weather Statement	MPX	Dunn	28 min
Jun 11, 6:44 PM CDT	Special Weather Statement	MPX	Dunn	46 min
Jun 11, 5:56 AM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Lac qui Parle, Swift, Yellow Medicine	49 min
Jun 11, 6:09 AM CDT	Severe Thunderstorm Warning	MPX	Lac qui Parle, Swift	36 min
Jun 11, 6:24 AM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Swift	66 min
Jun 11, 6:27 AM CDT	Severe Thunderstorm Warning	MPX	Redwood, Renville, Yellow Medicine	48 min
Jun 11, 6:50 AM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Meeker, Redwood, Renville	55 min
Jun 11, 7:05 AM CDT	Severe Thunderstorm Warning	MPX	Brown, Redwood	55 min
Jun 11, 7:21 AM CDT	Severe Thunderstorm Warning	MPX	McLeod, Meeker, Sibley, Wright	54 min
Jun 11, 7:34 AM CDT	Tornado Warning	MPX	Kandiyohi, Meeker	26 min
Jun 11, 7:38 AM CDT	Severe Thunderstorm Warning	MPX	Stearns, Wright	52 min
Jun 11, 7:50 AM CDT	Severe Thunderstorm Warning	MPX	Carver, Hennepin, Wright	55 min
Jun 11, 7:56 AM CDT	Special Weather Statement	MPX	Chippewa, Lac qui Parle, Pope, Stevens, Swift, Yellow Medicine	109 min
Jun 11, 8:00 AM CDT	Special Weather Statement	MPX	Brown	45 min
Jun 11, 8:05 AM CDT	Special Weather Statement	MPX	Benton, Morrison, Sherburne	40 min
Jun 11, 8:10 AM CDT	Severe Thunderstorm Warning	MPX	Le Sueur, McLeod, Scott, Sibley	50 min
Jun 11, 8:24 AM CDT	Special Weather Statement	MPX	Nicollet	51 min
Jun 11, 8:27 AM CDT	Severe Thunderstorm Warning	MPX	Anoka, Dakota, Hennepin, Ramsey, Scott	48 min
Jun 11, 8:38 AM CDT	Special Weather Statement	MPX	Chisago, Isanti	67 min
Jun 11, 9:00 AM CDT	Special Weather Statement	MPX	Goodhue, Le Sueur, Rice	60 min
Jun 11, 9:02 AM CDT	Severe Thunderstorm Warning	MPX	Anoka, Chisago, Washington	28 min
Jun 11, 9:41 AM CDT	Special Weather Statement	MPX	Benton, Douglas, Morrison, Pope, Stearns, Todd	109 min
Jun 11, 4:08 PM CDT	Special Weather Statement	MPX	Wright	37 min
Jun 11, 4:27 PM CDT	Special Weather Statement	MPX	Isanti	33 min
Jun 11, 5:11 PM CDT	Special Weather Statement	MPX	Wright	34 min
Jun 11, 5:57 PM CDT	Special Weather Statement	MPX	Ramsey	33 min

Nearby

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