Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 84, NWS La Crosse, WI

August 3, 2012Dodge County, Olmsted County, Wabasha County, Minnesota

NWS La Crosse, WI issued this severe thunderstorm warning at Aug 3, 2012, 11:43 PM CDT for Dodge County, Olmsted County, Wabasha County, Minnesota. It was in force for 62 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: Aug 3, 2012, 11:43 PM CDT (04:43 UTC)
Expired: Aug 4, 2012, 12:45 AM CDT
In force: 62 min
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Hail: 0.5 in
Wind: 60.0 mph

Counties Dodge County, MN, Olmsted County, MN, Wabasha County, MN

The radar

The La Crosse radar (KARX), 102 km from the middle of the area, began a volume at 04:45 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
Aug 4, 12:02 AM CDT	TSTM WND DMG	Mazeppa, MN
Aug 4, 12:10 AM CDT	TSTM WND GST 51	1 S Oronoco, MN
Aug 4, 12:20 AM CDT	TSTM WND GST 38	Elgin, MN
Aug 4, 12:20 AM CDT	TSTM WND GST 40	Zumbro Falls, MN
Aug 4, 12:29 AM CDT	TSTM WND GST 45	Plainview, MN
Aug 4, 12:32 AM CDT	TSTM WND GST 35	7 Wnw Wabasha, MN

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
Aug 3, 10:57 PM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 4.7 hours before the alert went out and 121 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: 576 J/kg
Mixed-layer CIN: -95 J/kg
Mixed-layer LCL: 1840 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 100 m²/s²
0-3 km storm-relative helicity: 257 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 7.5

Open this sounding in Storm Lab

The text

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

109 
WUUS53 KARX 040443
SVRARX
MNC039-109-157-040545-
/O.NEW.KARX.SV.W.0084.120804T0443Z-120804T0545Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
1143 PM CDT FRI AUG 3 2012

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN DODGE COUNTY IN SOUTHEAST MINNESOTA...
  NORTHWESTERN OLMSTED COUNTY IN SOUTHEAST MINNESOTA...
  WABASHA COUNTY IN SOUTHEAST MINNESOTA...

* UNTIL 1245 AM CDT

* AT 1140 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SEVERE THUNDERSTORMS ROUGHLY ALONG A LINE EXTENDING FROM 13 MILES
  NORTHWEST OF RED WING TO CANNON FALLS TO WEST CONCORD...MOVING EAST
  AT 50 MPH. THESE STORMS CAN PRODUCE DAMAGING WINDS IN EXCESS OF 60
  MPH.  

* THE SEVERE THUNDERSTORMS WILL BE NEAR...
  MAZEPPA AROUND MIDNIGHT...
  ORONOCO AROUND 1205 AM...
  LAKE CITY AROUND 1210 AM...
  ELGIN AROUND 1220 AM...
  WABASHA AND PLAINVIEW AROUND 1225 AM...
  KELLOGG AROUND 1230 AM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THESE STORMS...PREPARE IMMEDIATELY FOR
DAMAGING WINDS. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS.

&&

LAT...LON 4420 9304 4420 9256 4436 9256 4437 9244
      4446 9243 4446 9224 4437 9197 4432 9192
      4429 9192 4427 9189 4423 9189 4420 9186
      4419 9207 4411 9208 4412 9305
TIME...MOT...LOC 0443Z 270DEG 44KT 4470 9274 4441 9274
          4419 9292
WIND...HAIL 60MPH <.50IN

$$

DTJ

4 follow-up statements

001 
WWUS53 KARX 040503
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
1203 AM CDT SAT AUG 4 2012

MNC039-109-157-040545-
/O.CON.KARX.SV.W.0084.000000T0000Z-120804T0545Z/
DODGE MN-OLMSTED MN-WABASHA MN-
1203 AM CDT SAT AUG 4 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WABASHA...
NORTHWESTERN OLMSTED AND NORTHERN DODGE COUNTIES UNTIL 1245 AM CDT...

AT 1158 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WERE ROUGHLY ALONG A LINE EXTENDING FROM ELLSWORTH TO
MAZEPPA TO ORONOCO...MOVING EAST AT 45 MPH. THESE STORMS CAN PRODUCE
DAMAGING WINDS IN EXCESS OF 60 MPH.

* THE SEVERE THUNDERSTORMS WILL BE NEAR...
  LAKE CITY AROUND 1210 AM...
  WABASHA AND ELGIN AROUND 1225 AM...
  PLAINVIEW AND KELLOGG AROUND 1230 AM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THESE STORMS...PREPARE IMMEDIATELY FOR
DAMAGING WINDS. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS.

LIGHTNING AND FALLING TREES CAN KILL. CAMPING VEHICLES AND TENTS ARE
NOT SAFE DURING THUNDERSTORMS. MOVE TO A PRE-DESIGNATED SHELTER IF
AVAILABLE. IF NO STRONG SHELTER IS AVAILABLE...SEEK SHELTER IN A
DEPRESSION OR RAVINE...BUT AVOID STREAM BEDS AND DRY WASHES. ASSUME
THE LIGHTNING POSITION BY MINIMIZING YOUR HEIGHT AND CONTACT WITH THE
GROUND. CROUCH LOW AND WRAP YOUR ARMS AROUND YOUR LEGS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT. CONDITIONS REMAIN
FAVORABLE FOR ADDITIONAL SEVERE THUNDERSTORMS TO DEVELOP.

&&

LAT...LON 4420 9304 4420 9256 4436 9256 4437 9244
      4446 9243 4446 9224 4437 9197 4432 9192
      4429 9192 4427 9189 4423 9189 4420 9186
      4419 9207 4411 9208 4412 9305
TIME...MOT...LOC 0502Z 271DEG 43KT 4469 9242 4440 9242
          4418 9260
WIND...HAIL 60MPH <.50IN

$$

DTJ

939 
WWUS53 KARX 040515
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
1215 AM CDT SAT AUG 4 2012

MNC039-109-157-040545-
/O.CON.KARX.SV.W.0084.000000T0000Z-120804T0545Z/
DODGE MN-OLMSTED MN-WABASHA MN-
1215 AM CDT SAT AUG 4 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WABASHA...
NORTHWESTERN OLMSTED AND NORTHERN DODGE COUNTIES UNTIL 1245 AM CDT...

AT 1210 AM CDT...TRAINED WEATHER SPOTTERS REPORTED MEASURED WIND 
GUST OF 51 MPH ONE MILE SOUTH OF ORONOCO.

AT 1210 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WERE ROUGHLY ALONG A LINE EXTENDING FROM ELLSWORTH TO
LAKE CITY TO ORONOCO...MOVING EAST AT 45 MPH. THESE STORMS CAN
PRODUCE DAMAGING WINDS IN EXCESS OF 60 MPH.

* THE SEVERE THUNDERSTORMS WILL BE NEAR...
  LAKE CITY AROUND 1220 AM...
  ELGIN AROUND 1235 AM...
  WABASHA AROUND 1240 AM...
  PLAINVIEW AND KELLOGG AROUND 1245 AM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THESE STORMS...PREPARE IMMEDIATELY FOR
DAMAGING WINDS. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS.

LIGHTNING AND FALLING TREES CAN KILL. CAMPING VEHICLES AND TENTS ARE
NOT SAFE DURING THUNDERSTORMS. MOVE TO A PRE-DESIGNATED SHELTER IF
AVAILABLE. IF NO STRONG SHELTER IS AVAILABLE...SEEK SHELTER IN A
DEPRESSION OR RAVINE...BUT AVOID STREAM BEDS AND DRY WASHES. ASSUME
THE LIGHTNING POSITION BY MINIMIZING YOUR HEIGHT AND CONTACT WITH THE
GROUND. CROUCH LOW AND WRAP YOUR ARMS AROUND YOUR LEGS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT. CONDITIONS REMAIN
FAVORABLE FOR ADDITIONAL SEVERE THUNDERSTORMS TO DEVELOP.

&&

LAT...LON 4420 9304 4420 9256 4436 9256 4437 9244
      4446 9243 4446 9224 4437 9197 4432 9192
      4429 9192 4427 9189 4423 9189 4420 9186
      4419 9207 4411 9208 4412 9305
TIME...MOT...LOC 0513Z 273DEG 27KT 4468 9233 4439 9233
          4417 9251
WIND...HAIL 60MPH <.50IN

$$

DTJ

838 
WWUS53 KARX 040532
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
1232 AM CDT SAT AUG 4 2012

MNC039-040540-
/O.CAN.KARX.SV.W.0084.000000T0000Z-120804T0545Z/
DODGE MN-
1232 AM CDT SAT AUG 4 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN DODGE COUNTY IS
CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE 
WARNED AREA.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 AM CDT
SATURDAY MORNING FOR SOUTHEAST MINNESOTA AND NORTHWESTERN WISCONSIN.

LAT...LON 4420 9255 4436 9256 4437 9244 4446 9243
      4446 9224 4439 9204 4436 9196 4432 9192
      4428 9192 4427 9189 4420 9187 4419 9208
      4411 9208 4412 9255 4420 9258
TIME...MOT...LOC 0530Z 273DEG 27KT 4467 9215 4438 9215
          4416 9233

$$

MNC109-157-040545-
/O.CON.KARX.SV.W.0084.000000T0000Z-120804T0545Z/
OLMSTED MN-WABASHA MN-
1232 AM CDT SAT AUG 4 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WABASHA AND
NORTH CENTRAL OLMSTED COUNTIES UNTIL 1245 AM CDT...

LOCAL LAW ENFORCEMENT OFFICIALS REPORTED A TREE DOWN IN MAZEPPA AT 
1202 AM CDT.

AT 1228 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WERE ROUGHLY ALONG A LINE EXTENDING FROM 11 MILES WEST
OF DURAND TO WABASHA TO ELGIN...MOVING EAST AT 40 MPH. THESE STORMS
CAN PRODUCE DAMAGING WINDS IN EXCESS OF 60 MPH.

* THE SEVERE THUNDERSTORMS WILL BE NEAR...
  WABASHA AND ELGIN AROUND 1240 AM...
  PLAINVIEW AND KELLOGG AROUND 1245 AM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THESE STORMS...PREPARE IMMEDIATELY FOR
DAMAGING WINDS. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS.

LIGHTNING AND FALLING TREES CAN KILL. CAMPING VEHICLES AND TENTS ARE
NOT SAFE DURING THUNDERSTORMS. MOVE TO A PRE-DESIGNATED SHELTER IF
AVAILABLE. IF NO STRONG SHELTER IS AVAILABLE...SEEK SHELTER IN A
DEPRESSION OR RAVINE...BUT AVOID STREAM BEDS AND DRY WASHES. ASSUME
THE LIGHTNING POSITION BY MINIMIZING YOUR HEIGHT AND CONTACT WITH THE
GROUND. CROUCH LOW AND WRAP YOUR ARMS AROUND YOUR LEGS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT. CONDITIONS REMAIN
FAVORABLE FOR ADDITIONAL SEVERE THUNDERSTORMS TO DEVELOP.

&&

LAT...LON 4420 9255 4436 9256 4437 9244 4446 9243
      4446 9224 4439 9204 4436 9196 4432 9192
      4428 9192 4427 9189 4420 9187 4419 9208
      4411 9208 4412 9255 4420 9258
TIME...MOT...LOC 0530Z 273DEG 27KT 4467 9215 4438 9215
          4416 9233
WIND...HAIL 60MPH <.50IN

$$

DTJ

433 
WWUS53 KARX 040542
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
1242 AM CDT SAT AUG 4 2012

MNC109-157-040552-
/O.EXP.KARX.SV.W.0084.000000T0000Z-120804T0545Z/
OLMSTED MN-WABASHA MN-
1242 AM CDT SAT AUG 4 2012

...THE SEVERE THUNDERSTORM WARNING FOR WABASHA AND NORTH CENTRAL
OLMSTED COUNTIES WILL EXPIRE AT 1245 AM CDT...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED BELOW
SEVERE LIMITS. HOWEVER...THE LINE OF STORMS REMAINS STRONG AND COULD
PRODUCE SMALL HAIL AND GUSTY WINDS...IN ADDITION TO LIGHTNING AND
HEAVY RAIN.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT. CONDITIONS REMAIN
FAVORABLE FOR ADDITIONAL SEVERE THUNDERSTORMS TO DEVELOP.

LAT...LON 4420 9255 4436 9256 4437 9244 4446 9243
      4446 9224 4439 9204 4436 9196 4432 9192
      4428 9192 4427 9189 4420 9187 4419 9208
      4411 9208 4412 9255 4420 9258
TIME...MOT...LOC 0542Z 273DEG 27KT 4466 9202 4437 9202
          4415 9221

$$

DTJ

Nearby

Severe Thunderstorm Warnings in Minnesota, 2012 Every severe thunderstorm warning in 2012

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.