Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 168, NWS Twin Cities, MN

July 19, 2017Pepin County, Pierce County, Wisconsin; Dakota County, Goodhue County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 19, 2017, 4:02 PM CDT for Pepin County, Pierce County, Wisconsin; Dakota County, Goodhue County, Minnesota. It was in force for 43 min. 2 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
Jul 19, 2017, 4:02 PM CDT (21:02 UTC)
Expired
Jul 19, 2017, 4:45 PM CDT
In force
43 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

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

The radar

The Minneapolis radar (KMPX), 75 km from the middle of the area, began a volume at 21:02 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
Jul 19, 4:15 PM CDTTSTM WND DMG6 E Miesville, MNMESONET STATION MN047, RED WING 4W.
Jul 19, 4:15 PM CDTTSTM WND GST 506 E Miesville, MNMESONET STATION MN047, RED WING 4W.

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

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 9.0 hours before the alert went out and 78 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 2017-07-19Temperature 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 2017-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -10 square meters per square second.1939587897Sfc1 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
1964 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
-10 m²/s²
0-3 km storm-relative helicity
91 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

406 
WUUS53 KMPX 192102
SVRMPX
MNC037-049-WIC091-093-192145-
/O.NEW.KMPX.SV.W.0168.170719T2102Z-170719T2145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
402 PM CDT WED JUL 19 2017

The National Weather Service in The Twin Cities has issued a

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

* Until 445 PM CDT

* At 402 PM CDT, a severe thunderstorm was located near Diamond
  Bluff, or 10 miles northwest of Red Wing, moving east 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...
  Red Wing, Hastings, Prescott, Cannon Falls, Ellsworth, Elmwood,
  Welch, Plum City, Bay City, Stockholm, Frontenac and Vasa.

This includes U.S. Highway 61 between mile markers 82 and 104.
 
This includes  Treasure Island Casino.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and damaging winds. People outside
should move immediately to shelter inside a strong building. Stay
away from windows.

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

&&

LAT...LON 4447 9296 4475 9283 4475 9281 4482 9277
      4484 9213 4445 9214
TIME...MOT...LOC 2102Z 262DEG 37KT 4465 9271 

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

ETA
1 follow-up statement
103 
WWUS53 KMPX 192131
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
431 PM CDT WED JUL 19 2017

MNC037-192141-
/O.CAN.KMPX.SV.W.0168.000000T0000Z-170719T2145Z/
Dakota MN-
431 PM CDT WED JUL 19 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN DAKOTA COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 4446 9259 4477 9245 4478 9213 4445 9214
TIME...MOT...LOC 2131Z 262DEG 37KT 4469 9230 

$$

MNC049-WIC091-093-192145-
/O.CON.KMPX.SV.W.0168.000000T0000Z-170719T2145Z/
Goodhue MN-Pepin WI-Pierce WI-
431 PM CDT WED JUL 19 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM CDT
FOR EAST CENTRAL GOODHUE...SOUTHWESTERN PEPIN AND SOUTHEASTERN PIERCE
COUNTIES...

At 431 PM CDT, a severe thunderstorm was located near El Paso, or 15
miles northeast of Red Wing, moving east at 45 mph.

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

SOURCE...Radar indicated. 

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

Locations impacted include...
Red Wing, Ellsworth, Elmwood, Plum City, Bay City, Stockholm,
Frontenac, El Paso, Wacouta, Central Point, Esdaile and Red Wing
Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.

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

&&

LAT...LON 4446 9259 4477 9245 4478 9213 4445 9214
TIME...MOT...LOC 2131Z 262DEG 37KT 4469 9230 

HAIL...0.75IN
WIND...60MPH
 
$$

ETA

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 19, 2:06 PM CDTSevere Thunderstorm WarningMPXRedwood39 min
Jul 19, 2:38 PM CDTSevere Thunderstorm WarningMPXBrown, Watonwan52 min
Jul 19, 2:51 PM CDTTornado WarningMPXBrown24 min
Jul 19, 3:11 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Brown, Nicollet, Watonwan34 min
Jul 19, 3:38 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Le Sueur, Rice, Waseca37 min
Jul 19, 3:50 PM CDTSevere Thunderstorm WarningMPXFaribault, Martin40 min
Jul 19, 3:57 PM CDTSevere Thunderstorm WarningMPXFaribault, Freeborn18 min
Jul 19, 4:06 PM CDTSevere Thunderstorm WarningMPXFaribault, Freeborn, Steele, Waseca39 min
Jul 19, 4:40 PM CDTSevere Thunderstorm WarningMPXFreeborn20 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.