Alert archive / Minnesota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 13, NWS La Crosse, WI

May 15, 2021Wabasha County, Minnesota; Buffalo County, Wisconsin

NWS La Crosse, WI issued this severe thunderstorm warning at May 15, 2021, 6:58 PM CDT for Wabasha County, Minnesota; Buffalo County, Wisconsin. It was in force for 47 min. 2 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: May 15, 2021, 6:58 PM CDT (23:58 UTC)
Expired: May 15, 2021, 7:45 PM CDT
In force: 47 min
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Hail: 1.25 in
Wind: 50.0 mph

Counties Wabasha County, MN, Buffalo County, WI

The radar

The La Crosse radar (KARX), 95 km from the middle of the area, began a volume at 00:02 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
May 15, 7:42 PM CDT	HAIL 0.88	4 Sse Kellogg, MN	CORRECTS PREVIOUS HAIL REPORT FROM 4 SSE KELLOGG.
May 15, 7:53 PM CDT	HAIL 0.88	4 Sse Kellogg, MN

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 12.0 hours before the alert went out and 131 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 894 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 57 m²/s²
0-3 km storm-relative helicity: 120 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

440 
WUUS53 KARX 152358
SVRARX
MNC157-WIC011-160045-
/O.NEW.KARX.SV.W.0013.210515T2358Z-210516T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service La Crosse WI
658 PM CDT Sat May 15 2021

The National Weather Service in La Crosse has issued a

* Severe Thunderstorm Warning for...
  Northeastern Wabasha County in southeastern Minnesota...
  Northwestern Buffalo County in west central Wisconsin...

* Until 745 PM CDT.

* At 658 PM CDT, a severe thunderstorm was located over Wabasha,
  moving southeast at 20 mph.

  HAZARD...Half dollar size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to vehicles is expected.

* This severe thunderstorm will be near...
  Wabasha around 705 PM CDT.
  Kellogg around 720 PM CDT.
  Alma around 730 PM CDT.
  Buffalo City around 740 PM CDT.
  Buffalo around 745 PM CDT.

Other locations impacted by this severe thunderstorm include Nelson,
Pioneer Campground, Weaver, West Newton, Zumbro Bottoms Campground,
Conception and Misha Mokwa.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

If on or near the Mississippi River, get away from the water and 
move indoors or inside a vehicle. Remember, lightning can strike out 
to 15 miles from the parent thunderstorm. If you can hear thunder, 
you are close enough to be struck by lightning. Move to safe shelter 
now!  Do not be caught on the water in a thunderstorm.

&&

LAT...LON 4444 9222 4442 9212 4441 9211 4441 9208
      4451 9205 4453 9200 4419 9172 4419 9211
TIME...MOT...LOC 2358Z 333DEG 18KT 4441 9207 

HAIL...1.25IN
WIND...<50MPH
 
$$

DAS

The office that day

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

Issued	Product	Office	Counties	Lasted
May 15, 4:17 PM CDT	Special Weather Statement	ARX	Wabasha	28 min
May 15, 5:01 PM CDT	Special Weather Statement	ARX	Wabasha	29 min
May 15, 5:17 PM CDT	Special Weather Statement	ARX	Fillmore	28 min
May 15, 5:31 PM CDT	Severe Thunderstorm Warning	ARX	Fillmore, Olmsted, Winona	44 min
May 15, 6:52 PM CDT	Special Weather Statement	ARX	Buffalo	23 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2021 Severe Thunderstorm Warnings in Wisconsin, 2021 Every severe thunderstorm warning in 2021

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.