Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 41, NWS Twin Cities, MN

May 23, 2007Dunn County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at May 23, 2007, 5:12 PM CDT for Dunn County, Wisconsin. It was in force for 63 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 23, 2007, 5:12 PM CDT (22:12 UTC)
Expired: May 23, 2007, 6:15 PM CDT
In force: 63 min
Issued by: NWS Twin Cities, MN
Area: Counties, with a storm outline in the text

County Dunn County, WI

The radar

The Minneapolis radar (KMPX), 129 km from the middle of the area, began a volume at 22:13 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.

Issued	Product	Office	Lasted
May 23, 2:58 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.2 hours before the alert went out and 132 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: 84 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 811 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 141 m²/s²
0-3 km storm-relative helicity: 164 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KMPX 232213
SVRMPX
WIC033-232315-
/O.NEW.KMPX.SV.W.0041.070523T2212Z-070523T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
512 PM CDT WED MAY 23 2007

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  DUNN COUNTY IN WEST CENTRAL WISCONSIN...

* UNTIL 615 PM CDT

* AT 509 PM CDT...DOPPLER RADAR INDICATED A LINE OF SEVERE
  THUNDERSTORMS...CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING WINDS
  IN EXCESS OF 65 MPH.  THESE STORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM 13 MILES NORTHWEST OF BOYCEVILLE TO 8 MILES
  SOUTHWEST OF BOYCEVILLE TO 20 MILES SOUTHWEST OF MENOMONIE...AND
  MOVING EAST AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE...
  BOYCEVILLE...
  MENOMONIE...
  COLFAX...
  ELK MOUND...

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE
WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE
SUCH AS A BASEMENT OR SMALL INTERIOR ROOM IF A TORNADO IS SPOTTED.

LAT...LON 4521 9215 4498 9214 4469 9213 4469 9166
      4501 9167 4521 9166

$$

MB

1 follow-up statement

000 
WWUS53 KMPX 232232
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
532 PM CDT WED MAY 23 2007

WIC033-232315-
/O.CON.KMPX.SV.W.0041.000000T0000Z-070523T2315Z/
DUNN WI-
532 PM CDT WED MAY 23 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT
FOR DUNN COUNTY...

AT 530 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A LINE OF SEVERE 
THUNDERSTORMS...CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING WINDS 
IN EXCESS OF 65 MPH.  THESE STORMS WERE LOCATED ALONG A LINE 
EXTENDING FROM 3 MILES SOUTH OF RIDGELAND TO 3 MILES NORTH OF 
MENOMONIE TO 14 MILES SOUTH OF MENOMONIE...AND MOVING EAST AT 35 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE SAND CREEK...ROCK FALLS...
CONNORSVILLE...CARYVILLE...WHEELER...TAINTER LAKE...RIDGELAND...
MENOMONIE...KNAPP AND ELK MOUND.

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

LAT...LON 4521 9215 4498 9214 4469 9213 4469 9166
      4501 9167 4520 9165

$$

MB

The office that day

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

Issued	Product	Office	Counties	Lasted
May 23, 3:22 PM CDT	Severe Thunderstorm Warning	MPX	Polk	53 min
May 23, 4:07 PM CDT	Tornado Warning	MPX	Polk	38 min
May 23, 4:24 PM CDT	Severe Thunderstorm Warning	MPX	Barron	66 min
May 23, 4:29 PM CDT	Severe Thunderstorm Warning	MPX	Saint Croix	61 min
May 23, 4:31 PM CDT	Severe Thunderstorm Warning	MPX	Pierce	59 min
May 23, 4:48 PM CDT	Tornado Warning	MPX	Polk	27 min
May 23, 5:27 PM CDT	Severe Thunderstorm Warning	MPX	Barron	48 min
May 23, 6:04 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Rusk	56 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2007 Every severe thunderstorm warning in 2007

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.