Alert archive / Minnesota / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 9, NWS La Crosse, WI

March 6, 2017Fillmore County, Houston County, Winona County, Minnesota

NWS La Crosse, WI issued this severe thunderstorm warning at Mar 6, 2017, 8:01 PM CST for Fillmore County, Houston County, Winona County, Minnesota. It was in force for 45 min. 8 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: Mar 6, 2017, 8:01 PM CST (02:01 UTC)
Expired: Mar 6, 2017, 8:46 PM CST
In force: 45 min
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

Counties Fillmore County, MN, Houston County, MN, Winona County, MN

The radar

The La Crosse radar (KARX), 26 km from the middle of the area, began a volume at 02:00 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
Mar 6, 8:30 PM CST	HAIL 0.25	2 Ene Mound Prairie, MN	WIND GUST TO 29 MPH.
Mar 6, 8:30 PM CST	HAIL 0.25	4 Nw Hokah, MN	WIND GUST TO 29 MPH
Mar 6, 8:31 PM CST	TSTM WND DMG	3 Se Hokah, MN	SEVERAL LARGE PINE TREES SNAPPED. TWO OUTBUILDINGS DESTROYED WITH OTHERS DAMAGED. TIME ESTIMATED FROM RADAR. REPORT VIA FACEBOOK.
Mar 6, 8:33 PM CST	TSTM WND DMG	Brownsville, MN	ROOF PARTIALLY BLOWN OFF A BARN. TIME ESTIMATED FROM RADAR. REPORT VIA TWITTER.
Mar 6, 8:36 PM CST	TSTM WND GST 50	1 Ne La Crescent, MN	TRAMPOLINE BLOWN ACROSS YARD.
Mar 6, 8:36 PM CST	TSTM WND GST 50	La Crescent, MN	TRAMPOLINE BLOWN ACROSS YARD.
Mar 6, 8:36 PM CST	HAIL 0.25	1 Ne La Crescent, MN
Mar 6, 8:36 PM CST	HAIL 0.25	La Crescent, 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
Mar 6, 2:43 PM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 2.0 hours before the alert went out and 214 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: 923 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 993 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: 432 m²/s²
0-3 km storm-relative helicity: 528 m²/s²
Significant tornado parameter: 2.2
Supercell composite: 10.3

Open this sounding in Storm Lab

The text

As transmitted.

459 
WUUS53 KARX 070201
SVRARX
MNC045-055-169-070300-
/O.NEW.KARX.SV.W.0009.170307T0201Z-170307T0300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service La Crosse WI
801 PM CST MON MAR 6 2017

The National Weather Service in La Crosse has issued a

* Severe Thunderstorm Warning for...
  Southeastern Winona County in southeastern Minnesota...
  Houston County in southeastern Minnesota...
  Eastern Fillmore County in southeastern Minnesota...

* Until 900 PM CST

* At 759 PM CST, severe thunderstorms were located along a line
  extending from near Lanesboro to near Canton, moving northeast at
  55 mph.

  HAZARD...60 mph wind gusts and nickel size hail. 

  SOURCE...Law enforcement. In Harmony, 56 mph winds were reported 
           at 747 pm. 

  IMPACT...Expect damage to roofs, siding, and trees. 

* Severe thunderstorms will be near...
  Spring Grove around 805 PM CST. 
  Rushford around 810 PM CST. 
  Houston around 820 PM CST. 
  La Crescent, La Crosse and Dakota around 835 PM CST. 

Other locations impacted by these severe thunderstorms include New
Hartford, Rushford Village, Mound Prairie, Money Creek and Dresbach.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

A tornado watch remains in effect until 1000 PM CST for northeastern
Iowa. A tornado watch also remains in effect until 1000 PM CST for
southeastern Minnesota.

LAT...LON 4385 9176 4400 9143 4385 9128 4378 9124
      4371 9127 4361 9127 4358 9123 4354 9125
      4350 9122 4350 9189 4351 9189
TIME...MOT...LOC 0159Z 223DEG 50KT 4376 9191 4360 9190 

HAIL...0.88IN
WIND...60MPH
 
$$

DAB

3 follow-up statements

360 
WWUS53 KARX 070216
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
816 PM CST MON MAR 6 2017

MNC045-070224-
/O.CAN.KARX.SV.W.0009.000000T0000Z-170307T0300Z/
Fillmore MN-
816 PM CST MON MAR 6 2017

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN FILLMORE COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A tornado watch remains in effect until 1000 PM CST for northeastern
Iowa. A tornado watch also remains in effect until 1000 PM CST for
southeastern Minnesota.

A severe thunderstorm watch remains in effect until 200 AM CST for
southwestern and west central Wisconsin.

LAT...LON 4400 9143 4385 9128 4379 9126 4378 9124
      4371 9127 4361 9127 4358 9123 4354 9125
      4350 9122 4350 9173 4384 9173 4385 9176
      4386 9175
TIME...MOT...LOC 0214Z 239DEG 46KT 4384 9164 4352 9164 

$$

MNC055-169-070300-
/O.CON.KARX.SV.W.0009.000000T0000Z-170307T0300Z/
Winona MN-Houston MN-
816 PM CST MON MAR 6 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM CST
FOR SOUTHEASTERN WINONA AND HOUSTON COUNTIES...

At 814 PM CST, severe thunderstorms were located along a line
extending from near Rushford to near Spring Grove, moving northeast
at 55 mph.

HAZARD...60 mph wind gusts and half dollar size hail. 

SOURCE...Law enforcement. Small hail covering the ground in Harmony 
         was reported at 745 pm. Winds in the 50 to 55 mph range 
         were also reported there. 

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees. 

These severe storms will be near...
  Houston around 820 PM CST. 
  Caledonia around 825 PM CST. 
  La Crescent, Dakota and New Albin around 830 PM CST. 
  Brownsville and Hokah around 840 PM CST. 

Other locations impacted by these severe thunderstorms include New
Hartford, Mound Prairie, Money Creek, Dresbach and Wilmington.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

A tornado watch also remains in effect until 1000 PM CST for 
southeastern Minnesota. 

LAT...LON 4400 9143 4385 9128 4379 9126 4378 9124
      4371 9127 4361 9127 4358 9123 4354 9125
      4350 9122 4350 9173 4384 9173 4385 9176
      4386 9175
TIME...MOT...LOC 0214Z 239DEG 46KT 4384 9164 4352 9164 

HAIL...1.25IN
WIND...60MPH
 
$$

DAB

406 
WWUS53 KARX 070228
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
828 PM CST MON MAR 6 2017

MNC055-169-070300-
/O.CON.KARX.SV.W.0009.000000T0000Z-170307T0300Z/
Winona MN-Houston MN-
828 PM CST MON MAR 6 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM CST
FOR SOUTHEASTERN WINONA AND HOUSTON COUNTIES...

At 827 PM CST, severe thunderstorms were located along a line
extending from near Trempealeau to near Caledonia, moving northeast
at 55 mph.

HAZARD...60 mph wind gusts and half dollar size hail. 

SOURCE...Law enforcement. 

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees. 

These severe storms will be near...
  La Crosse, La Crescent and Dakota around 835 PM CST. 

Other locations impacted by these severe thunderstorms include New
Hartford, Mound Prairie, Dresbach, Wilmington and Reno.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

A tornado watch remains in effect until 1000 PM CST for northeastern
Iowa. A tornado watch also remains in effect until 1000 PM CST for
southeastern Minnesota.

LAT...LON 4400 9143 4385 9128 4379 9126 4378 9124
      4371 9127 4361 9127 4358 9123 4354 9125
      4350 9122 4350 9157 4378 9159 4393 9159
TIME...MOT...LOC 0227Z 233DEG 49KT 4394 9145 4359 9142 

HAIL...1.25IN
WIND...60MPH
 
$$

DAB

816 
WWUS53 KARX 070246
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
846 PM CST MON MAR 6 2017

MNC055-169-070255-
/O.CAN.KARX.SV.W.0009.000000T0000Z-170307T0300Z/
Winona MN-Houston MN-
846 PM CST MON MAR 6 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WINONA AND
HOUSTON COUNTIES IS CANCELLED...
    
The storms which prompted the warning have moved out of the area.
Therefore the warning has been cancelled.

LAT...LON 4400 9143 4385 9128 4379 9126 4378 9124
      4371 9127 4361 9127 4358 9123 4354 9125
      4350 9122 4350 9157 4378 9159 4393 9159
TIME...MOT...LOC 0243Z 223DEG 50KT 4411 9123 4376 9121 

$$

DAB

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 6, 6:22 PM CST	Severe Thunderstorm Warning	ARX	Olmsted	23 min
Mar 6, 6:25 PM CST	Special Weather Statement	ARX	Dodge, Fillmore, Mower, Olmsted, Wabasha	110 min
Mar 6, 6:32 PM CST	Severe Thunderstorm Warning	ARX	Wabasha	43 min
Mar 6, 6:57 PM CST	Severe Thunderstorm Warning	ARX	Mower	33 min
Mar 6, 7:06 PM CST	Special Weather Statement	ARX	Fillmore, Olmsted, Wabasha, Winona	114 min
Mar 6, 7:13 PM CST	Severe Thunderstorm Warning	ARX	Fillmore	62 min
Mar 6, 7:45 PM CST	Special Weather Statement	ARX	Winona	45 min
Mar 6, 8:05 PM CST	Special Weather Statement	ARX	Winona	25 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2017 Every severe thunderstorm warning in 2017

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.