Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 86, NWS Twin Cities, MN

July 13, 2015Polk County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 13, 2015, 3:00 PM CDT for Polk County, Wisconsin. It was in force for 45 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
Jul 13, 2015, 3:00 PM CDT (20:00 UTC)
Expired
Jul 13, 2015, 3:45 PM CDT
In force
45 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

County Polk County, WI

The radar

The Minneapolis radar (KMPX), 118 km from the middle of the area, began a volume at 20:00 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 13, 3:10 PM CDTTSTM WND DMGMilltown, WI2 FOOT DIAMETER DOWN ON HOUSE.
Jul 13, 3:10 PM CDTTSTM WND DMGMilltown, WI2 FOOT DIAMETER TREE DOWN ON HOUSE. ADDITIONAL TREES ALSO TOPPLED ACROSS TOWN.
Jul 13, 3:10 PM CDTHAIL 0.75Milltown, WI
Jul 13, 3:10 PM CDTHAIL 0.88Milltown, WI
Jul 13, 3:12 PM CDTHAIL 0.52 Nw Milltown, WI
Jul 13, 3:12 PM CDTHAIL 0.52 Nw Milltown, WI

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, 8.0 hours before the alert went out and 120 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 2015-07-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1389 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, Minneapolis, MN at 12:00Z on 2015-07-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 230 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
1389 J/kg
Mixed-layer CIN
-176 J/kg
Mixed-layer LCL
836 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
230 m²/s²
0-3 km storm-relative helicity
247 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

859 
WUUS53 KMPX 132000
SVRMPX
WIC095-132045-
/O.NEW.KMPX.SV.W.0086.150713T2000Z-150713T2045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
300 PM CDT MON JUL 13 2015

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN POLK COUNTY IN NORTHWESTERN WISCONSIN...

* UNTIL 345 PM CDT

* AT 300 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR MILLTOWN...
  OR 33 MILES EAST OF CAMBRIDGE...MOVING SOUTHEAST AT 25 MPH.

  HAZARD...QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...DAMAGE TO VEHICLES IS EXPECTED. 

* THIS SEVERE THUNDERSTORM WILL BE NEAR...
  LUCK AROUND 305 PM CDT.
  MILLTOWN AROUND 310 PM CDT.
  BALSAM LAKE AROUND 325 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE RANGE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4563 9249 4547 9215 4547 9216 4531 9240
      4556 9264
TIME...MOT...LOC 2000Z 313DEG 20KT 4556 9255 

HAIL...1.00IN
WIND...<50MPH
 
$$

JLT
3 follow-up statements
275 
WWUS53 KMPX 132018
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
318 PM CDT MON JUL 13 2015

WIC095-132045-
/O.CON.KMPX.SV.W.0086.000000T0000Z-150713T2045Z/
POLK WI-
318 PM CDT MON JUL 13 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM CDT
FOR EAST CENTRAL POLK COUNTY...

AT 318 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER BALSAM LAKE...
OR 34 MILES WEST OF RICE LAKE...MOVING SOUTHEAST AT 25 MPH.

HAZARD...QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...DAMAGE TO VEHICLES IS EXPECTED. 

THIS SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF EAST
CENTRAL POLK COUNTY...INCLUDING THE FOLLOWING LOCATIONS...RANGE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE OFFICE IN
THE TWIN CITIES.

&&

LAT...LON 4555 9240 4547 9215 4547 9217 4534 9236
      4548 9251
TIME...MOT...LOC 2018Z 313DEG 20KT 4549 9244 

HAIL...1.00IN
WIND...<50MPH
 
$$

JLT
574 
WWUS53 KMPX 132033
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
333 PM CDT MON JUL 13 2015

WIC095-132045-
/O.CON.KMPX.SV.W.0086.000000T0000Z-150713T2045Z/
POLK WI-
333 PM CDT MON JUL 13 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM CDT
FOR EAST CENTRAL POLK COUNTY...

AT 333 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR RANGE...OR 29
MILES WEST OF RICE LAKE...MOVING SOUTHEAST AT 25 MPH.

HAZARD...QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...DAMAGE TO VEHICLES IS EXPECTED. 

THIS SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF EAST
CENTRAL POLK COUNTY...INCLUDING THE FOLLOWING LOCATIONS...RANGE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE OFFICE IN
THE TWIN CITIES.

&&

LAT...LON 4551 9231 4546 9219 4535 9234 4544 9243
TIME...MOT...LOC 2033Z 313DEG 22KT 4543 9234 

HAIL...1.00IN
WIND...<50MPH
 
$$

JLT
143 
WWUS53 KMPX 132042
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
342 PM CDT MON JUL 13 2015

WIC095-132051-
/O.EXP.KMPX.SV.W.0086.000000T0000Z-150713T2045Z/
POLK WI-
342 PM CDT MON JUL 13 2015

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL POLK COUNTY WILL
EXPIRE AT 345 PM CDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.  HOWEVER SMALL HAIL
IS STILL POSSIBLE WITH THIS THUNDERSTORM.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CDT FOR
NORTHWESTERN WISCONSIN.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
THE TWIN CITIES.

LAT...LON 4551 9231 4546 9219 4535 9234 4544 9243
TIME...MOT...LOC 2040Z 313DEG 20KT 4543 9234 

$$

JLT

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 12, 9:24 PM CDTSevere Thunderstorm WarningMPXPolk51 min
Jul 12, 9:48 PM CDTSevere Thunderstorm WarningMPXPolk57 min
Jul 12, 9:59 PM CDTSevere Thunderstorm WarningMPXPolk, Saint Croix61 min
Jul 12, 10:18 PM CDTSevere Thunderstorm WarningMPXBarron, Dunn57 min
Jul 12, 10:45 PM CDTSpecial Weather StatementMPXSaint Croix60 min
Jul 12, 11:26 PM CDTSevere Thunderstorm WarningMPXBarron, Chippewa, Dunn, Rusk49 min
Jul 12, 11:40 PM CDTSpecial Weather StatementMPXDunn, Pepin, Pierce50 min
Jul 13, 12:03 AM CDTSevere Thunderstorm WarningMPXChippewa, Dunn, Eau Claire42 min
Jul 13, 12:17 AM CDTSpecial Weather StatementMPXRusk28 min
Jul 13, 12:37 AM CDTSpecial Weather StatementMPXEau Claire23 min
Jul 13, 12:41 AM CDTSpecial Weather StatementMPXPepin64 min
Jul 13, 2:47 AM CDTSpecial Weather StatementMPXSaint Croix58 min
Jul 13, 2:56 PM CDTSpecial Weather StatementMPXPolk34 min
Jul 13, 3:49 PM CDTSpecial Weather StatementMPXPolk41 min
Jul 13, 4:03 PM CDTSevere Thunderstorm WarningMPXPolk21 min
Jul 13, 4:13 PM CDTSevere Thunderstorm WarningMPXPolk28 min
Jul 13, 4:36 PM CDTSpecial Weather StatementMPXDunn39 min
Jul 13, 5:25 PM CDTSpecial Weather StatementMPXEau Claire20 min
Jul 13, 5:41 PM CDTSevere Thunderstorm WarningMPXDunn, Saint Croix31 min
Jul 13, 6:03 PM CDTSevere Thunderstorm WarningMPXDunn, Pepin31 min
Jul 13, 6:22 PM CDTSevere Thunderstorm WarningMPXEau Claire23 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2015Every severe thunderstorm warning in 2015

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.