Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 43, NWS Twin Cities, MN

June 17, 2014Eau Claire County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 17, 2014, 11:53 PM CDT for Eau Claire County, Wisconsin. It was in force for 52 min. 1 report 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 17, 2014, 11:53 PM CDT (04:53 UTC)
Expired: Jun 18, 2014, 12:45 AM CDT
In force: 52 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.25 in
Wind: 50.0 mph

County Eau Claire County, WI

The radar

The La Crosse radar (KARX), 98 km from the middle of the area, began a volume at 04:54 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 18, 12:10 AM CDT	HAIL 1	Augusta, 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 00:00Z, 4.9 hours before the alert went out and 200 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: 901 J/kg
Mixed-layer CIN: -172 J/kg
Mixed-layer LCL: 1176 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: -31 m²/s²
0-3 km storm-relative helicity: 71 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.6

Open this sounding in Storm Lab

The text

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

653 
WUUS53 KMPX 180453
SVRMPX
WIC035-180545-
/O.NEW.KMPX.SV.W.0043.140618T0453Z-140618T0545Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1153 PM CDT TUE JUN 17 2014

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN EAU CLAIRE COUNTY IN WEST CENTRAL WISCONSIN...

* UNTIL 1245 AM CDT

* AT 1152 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 6 MILES SOUTH OF
  LAKE EAU CLAIRE COUNTY PARK...AND MOVING EAST AT 20 MPH.

  HAZARD...HALF DOLLAR SIZE HAIL.

  SOURCE...RADAR INDICATED.

  IMPACT...DAMAGE TO VEHICLES IS EXPECTED.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  LAKE EAU CLAIRE COUNTY PARK AROUND MIDNIGHT CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4459 9114 4459 9123 4474 9128 4486 9096
      4486 9091 4466 9091
TIME...MOT...LOC 0453Z 250DEG 19KT 4468 9114

HAIL...1.25IN
WIND...<50MPH

$$

BORGHOFF

2 follow-up statements

102 
WWUS53 KMPX 180526
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1226 AM CDT WED JUN 18 2014

WIC035-180545-
/O.CON.KMPX.SV.W.0043.000000T0000Z-140618T0545Z/
EAU CLAIRE WI-
1226 AM CDT WED JUN 18 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
EAU CLAIRE COUNTY IN WEST CENTRAL WISCONSIN UNTIL 1245 AM CDT...

AT 1225 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR LAKE EAU
CLAIRE COUNTY PARK...AND MOVING EAST AT 25 MPH.

HAZARD...QUARTER SIZE HAIL.

SOURCE...RADAR INDICATED.

IMPACT...DAMAGE TO VEHICLES IS EXPECTED.

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF EASTERN EAU CLAIRE COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4470 9114 4478 9117 4486 9097 4485 9091
      4472 9092
TIME...MOT...LOC 0527Z 254DEG 23KT 4477 9103

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

$$

BORGHOFF

475 
WWUS53 KMPX 180547 RRA
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1247 AM CDT WED JUN 18 2014

WIC035-180557-
/O.EXP.KMPX.SV.W.0043.000000T0000Z-140618T0545Z/
EAU CLAIRE WI-
1247 AM CDT WED JUN 18 2014

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN EAU CLAIRE COUNTY
IN WEST CENTRAL WISCONSIN HAS EXPIRED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.

LAT...LON 4470 9114 4478 9117 4486 9097 4485 9091
      4472 9092
TIME...MOT...LOC 0526Z 254DEG 23KT 4477 9104

$$

BORGHOFF

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 17, 11:29 PM CDT	Special Weather Statement	MPX	Eau Claire	46 min
Jun 17, 11:30 PM CDT	Special Weather Statement	MPX	Polk	45 min
Jun 18, 2:41 PM CDT	Flash Flood Watch	MPX	Chippewa, Dunn, Eau Claire, Pepin, Pierce, Saint Croix	29 hr

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2014 Every severe thunderstorm warning in 2014

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.