Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 85, NWS Twin Cities, MN

July 13, 2015Chippewa County, Dunn County, Eau Claire County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 13, 2015, 12:03 AM CDT for Chippewa County, Dunn County, Eau Claire County, Wisconsin. It was in force for 42 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 13, 2015, 12:03 AM CDT (05:03 UTC)
Expired: Jul 13, 2015, 12:45 AM CDT
In force: 42 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Chippewa County, WI, Dunn County, WI, Eau Claire County, WI

The radar

The La Crosse radar (KARX), 124 km from the middle of the area, began a volume at 05:04 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
Jul 13, 12:41 AM CDT	TSTM WND DMG	2 E Fall Creek, WI	POWER LINES DOWN.
Jul 13, 12:46 AM CDT	TSTM WND DMG	5 Ne Fall Creek, WI	POWER LINES DOWN.

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
Jul 12, 9:59 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 5.1 hours before the alert went out and 177 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: 3598 J/kg
Mixed-layer CIN: -75 J/kg
Mixed-layer LCL: 1040 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 124 m²/s²
0-3 km storm-relative helicity: 116 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 12.7

Open this sounding in Storm Lab

The text

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

166 
WUUS53 KMPX 130503
SVRMPX
WIC017-033-035-130545-
/O.NEW.KMPX.SV.W.0085.150713T0503Z-150713T0545Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1203 AM CDT MON JUL 13 2015

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN CHIPPEWA COUNTY IN WEST CENTRAL WISCONSIN...
  SOUTHEASTERN DUNN COUNTY IN WEST CENTRAL WISCONSIN...
  NORTHERN EAU CLAIRE COUNTY IN WEST CENTRAL WISCONSIN...

* UNTIL 1245 AM CDT

* AT 1203 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM BLOOMER TO NEAR EAU CLAIRE AIRPORT TO NEAR
  DOWNSVILLE...MOVING EAST AT 30 MPH.

  HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES. 

* SEVERE THUNDERSTORMS WILL BE NEAR...
  CHIPPEWA FALLS...ALTOONA...LAKE HALLIE AND BLOOMER AROUND 1210 AM
  CDT.
  EAU CLAIRE AND LAKE WISSOTA AROUND 1220 AM CDT.
  FALL CREEK AROUND 1230 AM CDT.
  CADOTT AROUND 1235 AM CDT.

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE
TILDEN...JIM FALLS...CARYVILLE...LUDINGTON...SEYMOUR...EAGLETON...EAU
CLAIRE AIRPORT...ROCK FALLS AND BATEMAN.

THIS INCLUDES INTERSTATE 94 IN WISCONSIN BETWEEN MILE MARKERS 55 AND
76.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4509 9096 4482 9100 4466 9151 4478 9194
      4489 9161 4516 9155
TIME...MOT...LOC 0503Z 279DEG 28KT 4511 9147 4488 9152 4478 9185 

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

CLF

2 follow-up statements

257 
WWUS53 KMPX 130520
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1220 AM CDT MON JUL 13 2015

WIC017-033-035-130545-
/O.CON.KMPX.SV.W.0085.000000T0000Z-150713T0545Z/
CHIPPEWA WI-DUNN WI-EAU CLAIRE WI-
1220 AM CDT MON JUL 13 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 AM CDT
FOR SOUTHEASTERN CHIPPEWA...SOUTHEASTERN DUNN AND NORTHERN EAU CLAIRE
COUNTIES...

AT 1220 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM NEAR JIM FALLS TO NEAR LAKE HALLIE TO CARYVILLE...
MOVING EAST AT 30 MPH.

HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES. 

THESE SEVERE STORMS WILL BE NEAR...
  LAKE WISSOTA AROUND 1225 AM CDT.
  FALL CREEK AROUND 1230 AM CDT.
  CADOTT AROUND 1235 AM CDT.
  ALTOONA AROUND 1240 AM CDT.

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE JIM
FALLS...CARYVILLE...LUDINGTON...SEYMOUR...EAGLETON...EAU CLAIRE
AIRPORT...ROCK FALLS AND BATEMAN.

THIS INCLUDES INTERSTATE 94 IN WISCONSIN BETWEEN MILE MARKERS 61 AND
76.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4509 9096 4482 9100 4466 9151 4474 9180
      4487 9150 4514 9137
TIME...MOT...LOC 0520Z 279DEG 28KT 4509 9132 4486 9137 4476 9170 

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

JRB

847 
WWUS53 KMPX 130545
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1245 AM CDT MON JUL 13 2015

WIC017-033-035-130554-
/O.EXP.KMPX.SV.W.0085.000000T0000Z-150713T0545Z/
CHIPPEWA WI-DUNN WI-EAU CLAIRE WI-
1245 AM CDT MON JUL 13 2015

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CHIPPEWA...
SOUTHEASTERN DUNN AND NORTHERN EAU CLAIRE COUNTIES WILL EXPIRE AT
1245 AM CDT...

THE STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED. THEREFORE THE 
WARNING WILL BE ALLOWED TO EXPIRE.

HEAVY RAIN IS STILL OCCURRING WITH THESE STORMS...AND A SEVERE 
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 AM CDT FOR WEST 
CENTRAL WISCONSIN.

LAT...LON 4509 9096 4482 9100 4466 9151 4474 9180
      4487 9150 4514 9137
TIME...MOT...LOC 0542Z 279DEG 28KT 4509 9132 4486 9137 4476 9170 

$$

JRB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 12, 9:24 PM CDT	Severe Thunderstorm Warning	MPX	Polk	51 min
Jul 12, 9:48 PM CDT	Severe Thunderstorm Warning	MPX	Polk	57 min
Jul 12, 9:59 PM CDT	Severe Thunderstorm Warning	MPX	Polk, Saint Croix	61 min
Jul 12, 10:18 PM CDT	Severe Thunderstorm Warning	MPX	Barron, Dunn	57 min
Jul 12, 10:45 PM CDT	Special Weather Statement	MPX	Saint Croix	60 min
Jul 12, 11:26 PM CDT	Severe Thunderstorm Warning	MPX	Barron, Chippewa, Dunn, Rusk	49 min
Jul 12, 11:40 PM CDT	Special Weather Statement	MPX	Dunn, Pepin, Pierce	50 min
Jul 13, 12:17 AM CDT	Special Weather Statement	MPX	Rusk	28 min
Jul 13, 12:37 AM CDT	Special Weather Statement	MPX	Eau Claire	23 min
Jul 13, 12:41 AM CDT	Special Weather Statement	MPX	Pepin	64 min
Jul 13, 2:47 AM CDT	Special Weather Statement	MPX	Saint Croix	58 min
Jul 13, 2:56 PM CDT	Special Weather Statement	MPX	Polk	34 min
Jul 13, 3:00 PM CDT	Severe Thunderstorm Warning	MPX	Polk	45 min
Jul 13, 3:49 PM CDT	Special Weather Statement	MPX	Polk	41 min
Jul 13, 4:03 PM CDT	Severe Thunderstorm Warning	MPX	Polk	21 min
Jul 13, 4:13 PM CDT	Severe Thunderstorm Warning	MPX	Polk	28 min
Jul 13, 4:36 PM CDT	Special Weather Statement	MPX	Dunn	39 min
Jul 13, 5:25 PM CDT	Special Weather Statement	MPX	Eau Claire	20 min
Jul 13, 5:41 PM CDT	Severe Thunderstorm Warning	MPX	Dunn, Saint Croix	31 min
Jul 13, 6:03 PM CDT	Severe Thunderstorm Warning	MPX	Dunn, Pepin	31 min
Jul 13, 6:22 PM CDT	Severe Thunderstorm Warning	MPX	Eau Claire	23 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2015 Every 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.