Alert archive / Minnesota / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 21, NWS La Crosse, WI

June 17, 2010Dodge County, Mower County, Olmsted County, Minnesota

NWS La Crosse, WI issued this severe thunderstorm warning at Jun 17, 2010, 8:36 PM CDT for Dodge County, Mower County, Olmsted County, Minnesota. It was in force for 54 min. 14 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: Jun 17, 2010, 8:36 PM CDT (01:36 UTC)
Expired: Jun 17, 2010, 9:30 PM CDT
In force: 54 min
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Dodge County, MN, Mower County, MN, Olmsted County, MN

The radar

The La Crosse radar (KARX), 124 km from the middle of the area, began a volume at 01:35 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 17, 8:44 PM CDT	TSTM WND GST 50	Dodge Center, MN
Jun 17, 8:45 PM CDT	TSTM WND GST 60	Dodge Center, MN
Jun 17, 8:57 PM CDT	TSTM WND GST 70	1 Se Byron, MN
Jun 17, 8:57 PM CDT	TSTM WND GST 70	Rock Dell, MN
Jun 17, 8:59 PM CDT	HAIL 0.88	1 Se Byron, MN
Jun 17, 9:00 PM CDT	TSTM WND GST 75	1 Se Byron, MN
Jun 17, 9:00 PM CDT	TSTM WND GST 75	Rock Dell, MN
Jun 17, 9:00 PM CDT	HAIL 1	1 Se Byron, MN
Jun 17, 9:03 PM CDT	TSTM WND DMG	Rochester, MN	ON THE NORTHWEST SIDE OF ROCHESTER...SEVERAL ROOFS WERE BLOWN OFF BUILDINGS AND A RETAIL BUILDING SUSTAINED HEAVY DAMAGE. TIME OF EVENT ESTIMATED FROM RADAR DATA.
Jun 17, 9:03 PM CDT	TORNADO	Rochester, MN	EF1 TORNADO NORTHWEST SIDE OF ROCHESTER. 1.3 PATH LENGTH WITH MAX WIDTH OF 150 YARDS.
Jun 17, 9:04 PM CDT	TSTM WND GST 80	1 Se Byron, MN
Jun 17, 9:07 PM CDT	TSTM WND GST 55	3 S Hayfield, MN	WITH A PEAK GUST TO 60 MPH.
Jun 17, 9:11 PM CDT	TSTM WND GST 60	1 Se Byron, MN
Jun 17, 9:20 PM CDT	TSTM WND GST 50	Potsdam, 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
Jun 17, 5:50 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 1.6 hours before the alert went out and 308 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: 1494 J/kg
Mixed-layer CIN: -132 J/kg
Mixed-layer LCL: 1231 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 136 m²/s²
0-3 km storm-relative helicity: 271 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 5.5

Open this sounding in Storm Lab

The text

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

876 
WUUS53 KARX 180136
SVRARX
MNC039-099-109-180230-
/O.NEW.KARX.SV.W.0021.100618T0136Z-100618T0230Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
836 PM CDT THU JUN 17 2010

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN DODGE COUNTY IN SOUTHEAST MINNESOTA...
  MOWER COUNTY IN SOUTHEAST MINNESOTA...
  WESTERN OLMSTED COUNTY IN SOUTHEAST MINNESOTA...

* UNTIL 930 PM CDT

* AT 830 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SEVERE THUNDERSTORMS ROUGHLY ALONG A LINE EXTENDING FROM 
  HAYFIELD TO AUSTIN...MOVING EAST AT 35 MPH. THESE STORMS CAN
  PRODUCE QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH.  

* THE SEVERE THUNDERSTORMS WILL BE NEAR...
  ROSE CREEK AND BYRON AROUND 845 PM...
  ORONOCO AROUND 850 PM...
  ROCHESTER AND ADAMS AROUND 855 PM...
  STEWARTVILLE AND GRAND MEADOW AROUND 900 PM...
  LE ROY AROUND 910 PM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. SEVERE
THUNDERSTORMS OCCASIONALLY PRODUCE TORNADOES...AND CAN DO SO QUICKLY.
MOVE INTO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR
BUSINESS.

&&

LAT...LON 4388 9303 4420 9276 4420 9233 4383 9246
      4350 9245 4350 9306
TIME...MOT...LOC 0136Z 269DEG 39KT 4393 9276 4361 9299
WIND...HAIL 60MPH 1.00IN

$$

SHEA

4 follow-up statements

957 
WWUS53 KARX 180153
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
853 PM CDT THU JUN 17 2010

MNC039-099-109-180230-
/O.CON.KARX.SV.W.0021.000000T0000Z-100618T0230Z/
DODGE MN-OLMSTED MN-MOWER MN-
853 PM CDT THU JUN 17 2010

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR MOWER...
WESTERN OLMSTED AND SOUTHEASTERN DODGE COUNTIES UNTIL 930 PM CDT...

AT 849 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED SEVERE
THUNDERSTORMS FROM NEAR AUSTIN TO NEAR ROCHESTER MINNESOTA. THESE 
STORMS WILL LIKELY PRODUCE STRONG WINDS AS THEY MOVE THROUGH THESE
AREAS. STAY INDOORS AND AWAY FROM WINDOWS.

* THE SEVERE THUNDERSTORMS WILL BE NEAR...
  STEWARTVILLE AROUND 900 PM...
  GRAND MEADOW AROUND 905 PM...
  LE ROY AROUND 910 PM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS SITUATION. IF YOU ARE IN THE PATH OF THESE
STORMS...PREPARE IMMEDIATELY FOR DESTRUCTIVE WINDS...WHICH CAN UPROOT
TREES...DOWN POWER LINES...AND CAUSE DAMAGE TO ROOFS AND WINDOWS.
EVACUATE MOBILE HOMES AS THEY MAY BE OVERTURNED. LARGE HAIL IS ALSO
EXPECTED...WHICH CAN CAUSE DAMAGE TO VEHICLES AND WINDOWS. SEEK
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. SEVERE
THUNDERSTORMS OCCASIONALLY PRODUCE TORNADOES...AND CAN DO SO QUICKLY.
MOVE INTO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR
BUSINESS.

&&

LAT...LON 4388 9303 4420 9276 4420 9233 4383 9246
      4350 9245 4350 9306
TIME...MOT...LOC 0151Z 269DEG 39KT 4404 9249 4372 9277
WIND...HAIL 80MPH 1.00IN

$$

SHEA

555 
WWUS53 KARX 180206
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
906 PM CDT THU JUN 17 2010

MNC039-099-109-180230-
/O.CON.KARX.SV.W.0021.000000T0000Z-100618T0230Z/
DODGE MN-OLMSTED MN-MOWER MN-
906 PM CDT THU JUN 17 2010

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR MOWER...
WESTERN OLMSTED AND SOUTHEASTERN DODGE COUNTIES UNTIL 930 PM CDT...

TRAINED WEATHER SPOTTERS CONTINUE TO REPORT 80 MPH WIND GUSTS
AND LARGE HAIL AS THESE STORMS MOVE THROUGH BYRON AND AREAS NEAR
THE ROCHESTER AIRPORT.

EXPECT DAMAGING WINDS ACROSS MUCH OF OLMSTED COUNTY AS WELL AS
FAR NORTHERN MOWER AND FILLMORE COUNTIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS SITUATION. IF YOU ARE IN THE PATH OF THESE
STORMS...PREPARE IMMEDIATELY FOR DESTRUCTIVE WINDS...WHICH CAN UPROOT
TREES...DOWN POWER LINES...AND CAUSE DAMAGE TO ROOFS AND WINDOWS.
EVACUATE MOBILE HOMES AS THEY MAY BE OVERTURNED. LARGE HAIL IS ALSO
EXPECTED...WHICH CAN CAUSE DAMAGE TO VEHICLES AND WINDOWS. SEEK
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. SEVERE
THUNDERSTORMS OCCASIONALLY PRODUCE TORNADOES...AND CAN DO SO QUICKLY.
MOVE INTO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR
BUSINESS.

&&

LAT...LON 4388 9303 4420 9276 4420 9233 4383 9246
      4350 9245 4350 9306
TIME...MOT...LOC 0205Z 269DEG 39KT 4404 9228 4372 9256
WIND...HAIL 80MPH 1.00IN

$$

SHEA

792 
WWUS53 KARX 180213
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
913 PM CDT THU JUN 17 2010

MNC039-099-109-180230-
/O.CON.KARX.SV.W.0021.000000T0000Z-100618T0230Z/
DODGE MN-OLMSTED MN-MOWER MN-
913 PM CDT THU JUN 17 2010

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR MOWER...
WESTERN OLMSTED AND SOUTHEASTERN DODGE COUNTIES UNTIL 930 PM CDT...

TRAINED WEATHER SPOTTERS REPORTED QUARTER SIZE HAIL AND WINDS OF 68
MPH AROUND ROCHESTER AND 53 MPH WAS RECORDED AT THE AIRPORT.

THESE STORMS WILL CONTINUE TO BOW OUT AND PRODUCE WIDESPREAD WIND
DAMAGE ACROSS MUCH OF OLMSTED COUNTY. STRONG WINDS AND LARGE HAIL
COULD ALSO BE FALLING IN PARTS OF WABASHA COUNTY AND NORTHERN 
FILLMORE COUNTY IN SOUTHERN MINNESOTA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS SITUATION. IF YOU ARE IN THE PATH OF THESE
STORMS...PREPARE IMMEDIATELY FOR DESTRUCTIVE WINDS...WHICH CAN UPROOT
TREES...DOWN POWER LINES...AND CAUSE DAMAGE TO ROOFS AND WINDOWS.
EVACUATE MOBILE HOMES AS THEY MAY BE OVERTURNED. LARGE HAIL IS ALSO
EXPECTED...WHICH CAN CAUSE DAMAGE TO VEHICLES AND WINDOWS. SEEK
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM FRIDAY MORNING FOR 
SOUTHEAST MINNESOTA.

&&

LAT...LON 4388 9303 4420 9276 4420 9233 4383 9246
      4350 9245 4350 9306
TIME...MOT...LOC 0211Z 269DEG 39KT 4404 9219 4372 9247
WIND...HAIL 80MPH 1.00IN

$$

SHEA

270 
WWUS53 KARX 180228
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
928 PM CDT THU JUN 17 2010

MNC039-099-109-180237-
/O.EXP.KARX.SV.W.0021.000000T0000Z-100618T0230Z/
DODGE MN-OLMSTED MN-MOWER MN-
928 PM CDT THU JUN 17 2010

...THE SEVERE THUNDERSTORM WARNING FOR MOWER...WESTERN OLMSTED AND
SOUTHEASTERN DODGE COUNTIES WILL EXPIRE AT 930 PM CDT...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE 
WARNED AREA. ADDITIONAL STORMS MAY MOVE THROUGH THE AREA OVER THE 
NEXT HOUR BUT ARE NOT EXPECTED TO BE SEVERE AT THIS TIME.

SEVERE THUNDERSTORM WARNINGS REMAIN IN EFFECT EAST OF THIS AREA AS
THE STORMS CONTINUE TO TRACK EAST.

LAT...LON 4388 9303 4420 9276 4420 9233 4383 9246
      4350 9245 4350 9306
TIME...MOT...LOC 0227Z 269DEG 39KT 4404 9195 4372 9223

$$

SHEA

The office that day

Everything else NWS La Crosse, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 17, 7:28 PM CDT	Tornado Warning	ARX	Dodge	62 min
Jun 17, 8:28 PM CDT	Tornado Warning	ARX	Dodge	35 min
Jun 17, 9:01 PM CDT	Severe Thunderstorm Warning	ARX	Fillmore, Olmsted, Wabasha, Winona	59 min
Jun 17, 9:11 PM CDT	Flash Flood Warning	ARX	Dodge	3 hr
Jun 17, 9:36 PM CDT	Severe Thunderstorm Warning	ARX	Houston, Winona	84 min
Jun 17, 9:55 PM CDT	Severe Thunderstorm Warning	ARX	Fillmore	35 min
Jun 17, 10:55 PM CDT	Severe Thunderstorm Warning	ARX	Houston	65 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2010 Every severe thunderstorm warning in 2010

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.