Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 43, NWS Twin Cities, MN

May 17, 2017Pepin County, Pierce County, Wisconsin; Goodhue County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 17, 2017, 7:39 PM CDT for Pepin County, Pierce County, Wisconsin; Goodhue County, Minnesota. It was in force for 49 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
May 17, 2017, 7:39 PM CDT (00:39 UTC)
Expired
May 17, 2017, 8:28 PM CDT
In force
49 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Goodhue County, MN, Pepin County, WI, Pierce County, WI

The radar

The Minneapolis radar (KMPX), 100 km from the middle of the area, began a volume at 00:43 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.

IssuedProductOfficeLasted
May 17, 3:13 PM CDTTornado WatchSPC9 hr
May 17, 2:53 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 0.7 hours before the alert went out and 343 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, Green Bay/Straub, WI at 00:00Z on 2017-05-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 483 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Green Bay/Straub, WI at 00:00Z on 2017-05-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 128 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
483 J/kg
Mixed-layer CIN
-30 J/kg
Mixed-layer LCL
1467 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
128 m²/s²
0-3 km storm-relative helicity
202 m²/s²
Significant tornado parameter
0.2
Supercell composite
7.7

Open this sounding in Storm Lab

The text

As transmitted.

019 
WUUS53 KMPX 180039
SVRMPX
MNC049-WIC091-093-180145-
/O.NEW.KMPX.SV.W.0043.170518T0039Z-170518T0145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
739 PM CDT WED MAY 17 2017

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Goodhue County in southeastern Minnesota...
  Southwestern Pepin County in west central Wisconsin...
  Southeastern Pierce County in west central Wisconsin...

* Until 845 PM CDT

* At 739 PM CDT, severe thunderstorms were located along a line
  extending from Berne to near Bluff Valley Campground to near
  Weaver, moving north at 45 mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

  IMPACT...Expect damage to roofs, siding, and trees. 

* Severe thunderstorms will be near,
  Zumbrota and Wanamingo around 755 PM CDT. 
  Goodhue and Frontenac around 805 PM CDT. 
  Bay City around 815 PM CDT. 
  Red Wing and Welch around 820 PM CDT. 

Other locations impacted by these severe thunderstorms include Vasa,
Bellechester, Porcupine, Red Wing Airport, Wacouta, Frontenac State
Park, Central Point, Hader, Ella and Hager City.

This includes U.S. Highway 61 between mile markers 82 and 104.
 
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 CDT for southeastern
and east central Minnesota. A tornado watch also remains in effect
until 1100 PM CDT for west central Wisconsin.

LAT...LON 4454 9283 4454 9279 4463 9279 4460 9183
      4460 9200 4458 9203 4447 9206 4441 9209
      4445 9224 4445 9243 4437 9243 4436 9255
      4420 9256 4420 9284
TIME...MOT...LOC 0039Z 184DEG 37KT 4414 9277 4424 9244 4418 9194 

HAIL...<.75IN
WIND...60MPH
 
$$

SPD
2 follow-up statements
183 
WWUS53 KMPX 180119
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
819 PM CDT WED MAY 17 2017

MNC049-WIC091-093-180145-
/O.CON.KMPX.SV.W.0043.000000T0000Z-170518T0145Z/
Goodhue MN-Pepin WI-Pierce WI-
819 PM CDT WED MAY 17 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM CDT
FOR NORTHEASTERN GOODHUE...SOUTHWESTERN PEPIN AND SOUTHEASTERN PIERCE
COUNTIES...

At 819 PM CDT, severe thunderstorms were located along a line
extending from near Vasa to near Esdaile to near The Big Swamp Area,
moving north at 45 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

IMPACT...Expect damage to roofs, siding, and trees. 

Locations impacted include...
Red Wing, Pepin, Welch, Bay City, Stockholm, Frontenac, Wacouta,
Central Point, Porcupine, Red Wing Airport, Frontenac State Park and
Ella.

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 CDT for southeastern
Minnesota. A tornado watch also remains in effect until 1100 PM CDT
for west central Wisconsin.

LAT...LON 4452 9271 4461 9275 4460 9183 4460 9201
      4458 9203 4447 9206 4441 9209 4445 9224
      4448 9243 4450 9253
TIME...MOT...LOC 0119Z 184DEG 37KT 4453 9273 4463 9240 4457 9190 

HAIL...<.75IN
WIND...60MPH
 
$$

SPD
067 
WWUS53 KMPX 180128
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
828 PM CDT WED MAY 17 2017

MNC049-WIC091-093-180137-
/O.CAN.KMPX.SV.W.0043.000000T0000Z-170518T0145Z/
Goodhue MN-Pepin WI-Pierce WI-
828 PM CDT WED MAY 17 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN GOODHUE...
SOUTHWESTERN PEPIN AND SOUTHEASTERN PIERCE COUNTIES IS CANCELLED...
    
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore the warning has
been cancelled.

A tornado watch remains in effect until 1000 PM CDT for southeastern
Minnesota. A tornado watch also remains in effect until 1100 PM CDT
for west central Wisconsin.

LAT...LON 4452 9271 4461 9275 4460 9183 4460 9201
      4458 9203 4447 9206 4441 9209 4445 9224
      4448 9243 4450 9253
TIME...MOT...LOC 0126Z 184DEG 37KT 4461 9272 4471 9239 4465 9189 

$$

SPD

The office that day

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

IssuedProductOfficeCountiesLasted
May 17, 8:37 PM CDTSpecial Weather StatementMPXDunn, Pepin, Pierce, Saint Croix53 min
May 18, 9:00 AM CDTRiver Flood WatchMPXEau Claire23 hr
May 18, 9:00 AM CDTRiver Flood WatchMPXBuffalo, Pepin23 hr
May 18, 11:02 AM CDTRiver Flood WarningMPXEau Claire4 days
May 18, 2:20 PM CDTFrost AdvisoryMPXBarron, Chippewa, Dunn, Eau Claire, Polk, Rusk17 hr
May 18, 2:45 PM CDTRiver Flood WarningMPXBuffalo, Pepin6 days
May 17, 7:00 PM CDTSpecial Weather StatementMPXAnoka, Dakota, Ramsey30 min
May 17, 7:11 PM CDTFlash Flood WarningMPXAnoka, Hennepin, Ramsey3 hr
May 17, 8:03 PM CDTSpecial Weather StatementMPXGoodhue27 min

Nearby

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