Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 71, NWS Twin Cities, MN

June 7, 2007Barron County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 7, 2007, 1:11 PM CDT for Barron County, Wisconsin. It was in force for 25 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: Jun 7, 2007, 1:11 PM CDT (18:11 UTC)
Expired: Jun 7, 2007, 1:36 PM CDT
In force: 25 min
Issued by: NWS Twin Cities, MN
Area: Counties, with a storm outline in the text

County Barron County, WI

The radar

The Minneapolis radar (KMPX), 159 km from the middle of the area, began a volume at 18:07 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
Jun 7, 11:34 AM CDT	Tornado Watch PDS	SPC	10 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 6.2 hours before the alert went out and 161 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: 72 J/kg
Mixed-layer CIN: -470 J/kg
Mixed-layer LCL: 1082 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: 70 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KMPX 071811
SVRMPX
WIC005-071915-
/O.NEW.KMPX.SV.W.0071.070607T1811Z-070607T1915Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
111 PM CDT THU JUN 7 2007

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN BARRON COUNTY IN NORTHWEST WISCONSIN...

* UNTIL 215 PM CDT

* AT 107 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM...
  CAPABLE OF PRODUCING GOLF BALL SIZE HAIL.  THIS STORM WAS LOCATED
  OVER NORTHEASTERN DUNN COUNTY...OR ABOUT 19 MILES NORTHEAST OF
  MENOMONIE...AND MOVING NORTHEAST AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL OTHERWISE REMAIN OVER MAINLY RURAL    
  AREAS SOUTH OF CHETEK

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 9169 4521 9154 4529 9154 4527 9166

$$

1 follow-up statement

000 
WWUS53 KMPX 071836
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
136 PM CDT THU JUN 7 2007

WIC005-071846-
/O.CAN.KMPX.SV.W.0071.000000T0000Z-070607T1915Z/
BARRON WI-
136 PM CDT THU JUN 7 2007

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BARRON COUNTY IS 
CANCELLED...

RADAR INDICATED THAT THE SEVERE THUNDERSTORM HAD MOVED OUT OF THE
WARNED AREA. THUS THE WARNING HAS BEEN CANCELLED.

ADDITIONAL THUNDERSTORMS IN NORTHEAST DUNN COUNTY WILL BE MOVING 
INTO BARRON COUNTY...THAT MAY PRODUCE SOME HEAVY RAIN AND POSSIBLY 
SOME SMALL HAIL.

LAT...LON 4521 9169 4521 9154 4529 9154 4527 9166

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 7, 3:26 AM CDT	Severe Thunderstorm Warning	MPX	Saint Croix	34 min
Jun 7, 3:47 AM CDT	Severe Thunderstorm Warning	MPX	Barron, Polk	43 min
Jun 7, 3:56 AM CDT	Severe Thunderstorm Warning	MPX	Dunn	34 min
Jun 7, 4:14 AM CDT	Wind Advisory	MPX	Barron, Chippewa, Dunn, Eau Claire, Pepin, Pierce and 3 more	17 hr
Jun 7, 4:35 AM CDT	Severe Thunderstorm Warning	MPX	Rusk	40 min
Jun 7, 11:33 AM CDT	Severe Thunderstorm Warning	MPX	Pierce	57 min
Jun 7, 11:45 AM CDT	Tornado Warning	MPX	Pierce	45 min
Jun 7, 12:19 PM CDT	Severe Thunderstorm Warning	MPX	Dunn, Saint Croix	41 min
Jun 7, 12:48 PM CDT	Tornado Warning	MPX	Chippewa, Dunn	42 min
Jun 7, 1:24 PM CDT	Tornado Warning	MPX	Chippewa, Rusk	51 min
Jun 7, 1:56 PM CDT	Tornado Warning	MPX	Eau Claire	34 min
Jun 7, 2:25 PM CDT	Tornado Warning	MPX	Eau Claire	22 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.