Alert archive / Minnesota / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 39, NWS La Crosse, WI

July 18, 2015Olmsted County, Wabasha County, Minnesota; Buffalo County, Wisconsin

NWS La Crosse, WI issued this severe thunderstorm warning at Jul 18, 2015, 1:23 AM CDT for Olmsted County, Wabasha County, Minnesota; Buffalo County, Wisconsin. It was in force for 67 min. 9 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: Jul 18, 2015, 1:23 AM CDT (06:23 UTC)
Expired: Jul 18, 2015, 2:30 AM CDT
In force: 67 min
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 70.0 mph

Counties Olmsted County, MN, Wabasha County, MN, Buffalo County, WI

The radar

The La Crosse radar (KARX), 101 km from the middle of the area, began a volume at 06:27 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
Jul 18, 1:33 AM CDT	TSTM WND DMG	Mazeppa, MN	PINE TREE SNAPPED OFF. A FEW OTHER TREES BLOWN DOWN ALONG WITH SEVERAL BRANCHES. WIND GUST ESTIMATED AT 70 MPH. TIME ESTIMATED USING RADAR.
Jul 18, 1:54 AM CDT	TSTM WND DMG	Millville, MN	TREE DOWN ON COUNTY ROAD 2 IN MILLVILLE. TIME ESTIMATED BASED ON RADAR.
Jul 18, 1:54 AM CDT	TSTM WND GST 47	Rochester, MN	MEASURED AT THE MAYO HELIPAD.
Jul 18, 2:00 AM CDT	TSTM WND GST 52	Oronoco, MN
Jul 18, 2:02 AM CDT	TORNADO	6 Se Theilman, MN	DAMAGE TO A FARM INCLUDED SILO TOPS REMOVED...GARAGE DOORS BLOWN IN...TIRES MOVED. 25 YD WIDE...100 YARD LONG PATH THROUGH CORN SHOWED WEAK TORNADO TRACK. TIME IS RADAR ESTIMATED.
Jul 18, 2:05 AM CDT	TSTM WND DMG	Kellogg, MN	A FEW TREES DOWN ALONG HIGHWAY 42 NEAR KELLOGG. TIME ESTIMATED USING RADAR.
Jul 18, 2:07 AM CDT	TSTM WND DMG	Wabasha, MN	A FEW TREES REPORTED DOWN ALONG HIGHWAY 61 BETWEEN LAKE CITY AND WABASHA. TIME ESTIMATED USING RADAR.
Jul 18, 2:07 AM CDT	TSTM WND DMG	Wabasha, MN	A FEW TREES RERORTED DOWN ALONG HIGHWAY 61 BETWEEN LAKE CITY AND WABASHA. TIME ESTIMATED USING RADAR.
Jul 18, 2:17 AM CDT	TSTM WND DMG	Buffalo, WI	A FEW TREES DOWN IN BUFFALO. ONE TREE FELL ONTO A VEHICLE.

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
Jul 18, 12:41 AM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 6.4 hours before the alert went out and 122 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: 888 J/kg
Mixed-layer CIN: -162 J/kg
Mixed-layer LCL: 1752 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 104 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

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

101 
WUUS53 KARX 180623
SVRARX
MNC109-157-WIC011-180730-
/O.NEW.KARX.SV.W.0039.150718T0623Z-150718T0730Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
123 AM CDT SAT JUL 18 2015

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WABASHA COUNTY IN SOUTHEASTERN MINNESOTA...
  OLMSTED COUNTY IN SOUTHEASTERN MINNESOTA...
  NORTHWESTERN BUFFALO COUNTY IN WEST CENTRAL WISCONSIN...

* UNTIL 230 AM CDT

* AT 120 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE 
  EXTENDING FROM 8 MILES NORTHEAST OF ELLSWORTH TO NEAR 
  WASECA...MOVING EAST AT 45 MPH.

  HAZARD...70 MPH WIND GUSTS. 

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT CONSIDERABLE TREE DAMAGE. DAMAGE IS LIKELY TO 
           MOBILE HOMES...ROOFS AND OUTBUILDINGS. 

* SEVERE THUNDERSTORMS WILL BE NEAR...  
  LAKE CITY AND PINE ISLAND AROUND 145 AM CDT.
  ROCHESTER AROUND 150 AM CDT.
  STEWARTVILLE AND ALMA AROUND 205 AM CDT.
  MONDOVI AROUND 210 AM CDT.
  CHATFIELD AROUND 225 AM CDT.

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE
MARION...WABASHA...PLEASANT GROVE...DOUGLAS AND ROCK DELL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

INTENSE THUNDERSTORM LINES CAN PRODUCE BRIEF TORNADOES AND WIDESPREAD
SIGNIFICANT WIND DAMAGE. ALTHOUGH A TORNADO IS NOT IMMEDIATELY
LIKELY...IT IS BEST TO MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF A BUILDING. THESE STORMS MAY CAUSE SERIOUS INJURY AND SIGNIFICANT
PROPERTY DAMAGE.

&&

LAT...LON 4419 9268 4419 9255 4437 9255 4437 9243
      4445 9243 4445 9224 4441 9208 4459 9202
      4460 9163 4419 9186 4419 9208 4385 9208
      4384 9269
TIME...MOT...LOC 0620Z 285DEG 41KT 4484 9242 4389 9321 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...70MPH
 
$$

AJ

4 follow-up statements

026 
WWUS53 KARX 180640
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
140 AM CDT SAT JUL 18 2015

MNC109-157-WIC011-180730-
/O.CON.KARX.SV.W.0039.000000T0000Z-150718T0730Z/
WABASHA MN-OLMSTED MN-BUFFALO WI-
140 AM CDT SAT JUL 18 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 AM CDT
FOR WABASHA...OLMSTED AND NORTHWESTERN BUFFALO COUNTIES...

AT 139 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM NEAR MAIDEN ROCK TO NEAR BLOOMING PRAIRIE...MOVING EAST
AT 45 MPH.

HAZARD...70 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

IMPACT...EXPECT CONSIDERABLE TREE DAMAGE. DAMAGE IS LIKELY TO MOBILE 
         HOMES...ROOFS AND OUTBUILDINGS. 

THESE SEVERE STORMS WILL BE NEAR...
  WABASHA AROUND 150 AM CDT.
  MODENA AND ROCHESTER AROUND 205 AM CDT.
  MONDOVI AND STEWARTVILLE AROUND 210 AM CDT.

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE
MARION...HIGH FOREST...PLEASANT GROVE...DOUGLAS AND ROCK DELL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

INTENSE THUNDERSTORM LINES CAN PRODUCE BRIEF TORNADOES AND WIDESPREAD
SIGNIFICANT WIND DAMAGE. ALTHOUGH A TORNADO IS NOT IMMEDIATELY
LIKELY...IT IS BEST TO MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF A BUILDING. THESE STORMS MAY CAUSE SERIOUS INJURY AND SIGNIFICANT
PROPERTY DAMAGE.

&&

LAT...LON 4419 9268 4419 9255 4437 9255 4437 9243
      4445 9243 4445 9224 4441 9208 4459 9202
      4460 9163 4419 9186 4419 9208 4385 9208
      4384 9269
TIME...MOT...LOC 0639Z 287DEG 40KT 4457 9214 4384 9298 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...70MPH
 
$$

AJ

704 
WWUS53 KARX 180700
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
200 AM CDT SAT JUL 18 2015

MNC109-157-WIC011-180730-
/O.CON.KARX.SV.W.0039.000000T0000Z-150718T0730Z/
WABASHA MN-OLMSTED MN-BUFFALO WI-
200 AM CDT SAT JUL 18 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 AM CDT
FOR WABASHA...OLMSTED AND NORTHWESTERN BUFFALO COUNTIES...

AT 159 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 6 MILES SOUTHEAST OF DURAND TO THE ROCHESTER AIRPORT...
MOVING EAST AT 50 MPH.

HAZARD...60 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES. 

THESE SEVERE STORMS WILL BE NEAR...
  MODENA AROUND 205 AM CDT.
  MONDOVI AROUND 210 AM CDT.
  EYOTA AROUND 220 AM CDT.
  CHATFIELD AROUND 225 AM CDT.
  DOVER AROUND 230 AM CDT.

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE
MARION...HIGH FOREST...PLEASANT GROVE...DOUGLAS AND ROCK DELL.

NOTE THAT A TORNADO WARNING REMAINS IN EFFECT FOR
NORTHEASTERN WABASHA COUNTY UNTIL 230 AM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

INTENSE THUNDERSTORM LINES CAN PRODUCE BRIEF TORNADOES AND WIDESPREAD
SIGNIFICANT WIND DAMAGE. ALTHOUGH A TORNADO IS NOT IMMEDIATELY
LIKELY...IT IS BEST TO MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF A BUILDING. THESE STORMS MAY CAUSE SERIOUS INJURY AND SIGNIFICANT
PROPERTY DAMAGE.

&&

LAT...LON 4419 9268 4419 9255 4437 9255 4437 9243
      4445 9243 4445 9224 4441 9208 4459 9202
      4460 9163 4419 9186 4419 9208 4385 9208
      4384 9269
TIME...MOT...LOC 0659Z 271DEG 45KT 4458 9184 4385 9264 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

AJ

050 
WWUS53 KARX 180716
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
216 AM CDT SAT JUL 18 2015

MNC109-157-WIC011-180730-
/O.CON.KARX.SV.W.0039.000000T0000Z-150718T0730Z/
WABASHA MN-OLMSTED MN-BUFFALO WI-
216 AM CDT SAT JUL 18 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 AM CDT
FOR EASTERN WABASHA...OLMSTED AND NORTHWESTERN BUFFALO COUNTIES...

AT 216 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM MONDOVI TO NEAR STEWARTVILLE...MOVING EAST AT 45 MPH.

HAZARD...60 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES. 

THESE SEVERE STORMS WILL BE NEAR...
  MONDOVI AROUND 220 AM CDT.
  DOVER AROUND 230 AM CDT.

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE
MARION...HIGH FOREST...PLEASANT GROVE...ROCK DELL AND VIOLA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

INTENSE THUNDERSTORM LINES CAN PRODUCE BRIEF TORNADOES AND WIDESPREAD
SIGNIFICANT WIND DAMAGE. ALTHOUGH A TORNADO IS NOT IMMEDIATELY
LIKELY...IT IS BEST TO MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF A BUILDING. THESE STORMS MAY CAUSE SERIOUS INJURY AND SIGNIFICANT
PROPERTY DAMAGE.

&&

LAT...LON 4398 9268 4415 9237 4425 9225 4433 9217
      4439 9209 4441 9208 4459 9202 4460 9163
      4419 9186 4419 9208 4385 9208 4384 9269
TIME...MOT...LOC 0716Z 276DEG 37KT 4457 9166 4383 9237 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

AJ

923 
WWUS53 KARX 180732
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
232 AM CDT SAT JUL 18 2015

MNC109-157-WIC011-180742-
/O.EXP.KARX.SV.W.0039.000000T0000Z-150718T0730Z/
WABASHA MN-OLMSTED MN-BUFFALO WI-
232 AM CDT SAT JUL 18 2015

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN WABASHA...OLMSTED AND
NORTHWESTERN BUFFALO COUNTIES HAS EXPIRED...
    
THE STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE AREA.
THEREFORE THE WARNING HAS BEEN ALLOWED TO EXPIRE.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
LA CROSSE.

LAT...LON 4398 9268 4415 9237 4425 9225 4433 9217
      4439 9209 4441 9208 4459 9202 4460 9163
      4419 9186 4419 9208 4385 9208 4384 9269
TIME...MOT...LOC 0731Z 285DEG 41KT 4457 9166 4383 9237 

$$

AJ

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 18, 12:45 AM CDT	Special Weather Statement	ARX	Dodge, Olmsted, Wabasha	2 hr
Jul 18, 1:08 AM CDT	Severe Thunderstorm Warning	ARX	Dodge	52 min
Jul 18, 1:36 AM CDT	Special Weather Statement	ARX	Winona	84 min
Jul 18, 1:57 AM CDT	Tornado Warning	ARX	Wabasha	22 min
Jul 18, 2:06 AM CDT	Severe Thunderstorm Warning	ARX	Winona	54 min
Jul 18, 2:14 AM CDT	Special Weather Statement	ARX	Mower	61 min
Jul 18, 2:31 AM CDT	Areal Flood Advisory	ARX	Mower	119 min
Jul 18, 2:43 AM CDT	Severe Thunderstorm Warning	ARX	Winona	77 min
Jul 18, 2:57 AM CDT	Severe Thunderstorm Warning	ARX	Fillmore, Mower	27 min
Jul 18, 3:09 AM CDT	Special Weather Statement	ARX	Houston	66 min
Jul 18, 2:24 AM CDT	Special Weather Statement	ARX	Clark, Jackson, La Crosse, Monroe, Taylor	66 min
Jul 18, 2:32 AM CDT	Severe Thunderstorm Warning	ARX	Clark, Taylor	73 min
Jul 18, 3:21 AM CDT	Special Weather Statement	ARX	Adams, Juneau	114 min
Jul 18, 3:36 AM CDT	Areal Flood Advisory	ARX	La Crosse	114 min
Jul 18, 3:37 AM CDT	Severe Thunderstorm Warning	ARX	Adams, Juneau	68 min
Jul 18, 4:02 AM CDT	Special Weather Statement	ARX	Crawford, Grant, Richland	73 min
Jul 18, 10:38 AM CDT	Special Weather Statement	ARX	Grant	37 min
Jul 18, 11:26 AM CDT	Special Weather Statement	ARX	Grant	49 min
Jul 18, 12:03 PM CDT	Tornado Warning	ARX	Grant	27 min
Jul 18, 12:31 PM CDT	Tornado Warning	ARX	Grant	44 min
Jul 18, 1:14 PM CDT	Tornado Warning	ARX	Grant	16 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2015 Severe Thunderstorm Warnings in Wisconsin, 2015 Every severe thunderstorm warning in 2015

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.