Alert archive / Minnesota / Special Weather Statements in 2021

Special Weather Statement, NWS La Crosse, WI

August 6, 2021Mower County, Minnesota

NWS La Crosse, WI issued this special weather statement at Aug 6, 2021, 2:53 AM CDT for Mower County, Minnesota. It was in force for 37 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 6, 2021, 2:53 AM CDT (07:53 UTC)
Expired
Aug 6, 2021, 3:30 AM CDT
In force
37 min
Issued by
NWS La Crosse, WI
Hail
0.50 in
Wind
40

County Mower County, MN

The radar

The La Crosse radar (KARX), 130 km from the middle of the area, began a volume at 07:56 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.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 7.9 hours before the alert went out and 145 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-pSkew-T log-p diagram, Minneapolis, MN at 00:00Z on 2021-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2006 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2021-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 79 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
2006 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
1023 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
79 m²/s²
0-3 km storm-relative helicity
196 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

949 
WWUS83 KARX 060753
SPSARX

Special Weather Statement
National Weather Service La Crosse WI
253 AM CDT Fri Aug 6 2021
 
MNZ094-060830-
Mower MN-
253 AM CDT Fri Aug 6 2021

...A strong thunderstorm will impact portions of Mower County through
330 AM CDT...

At 252 AM CDT, Doppler radar was tracking a strong thunderstorm near
Rose Creek, or near Austin, moving east at 30 mph.

HAZARD...Winds in excess of 40 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects. Minor damage to outdoor objects is 
         possible.

Locations impacted include...
Austin, Grand Meadow, Le Roy, Adams, Brownsdale, Lyle, Rose Creek,
Lansing, Mayville, Dexter, Mapleview, Elkton, Taopi, County Roads 56
And 5, Brookside Campground, County Roads 4 And 8, Renova, Lake
Louise State Park, County Roads 1 And 15 and Riverbend Campground.

This includes Interstate 90 in Minnesota between mile markers 175 and
196.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 4384 9303 4370 9245 4350 9245 4350 9304
TIME...MOT...LOC 0752Z 290DEG 25KT 4365 9287 

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

$$

JAM

Nearby

Special Weather Statements in Minnesota, 2021Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.