Alert archive / Minnesota / Special Weather Statements in 2021

Special Weather Statement, NWS Twin Cities, MN

June 28, 2021Le Sueur County, Minnesota

NWS Twin Cities, MN issued this special weather statement at Jun 28, 2021, 12:55 PM CDT for Le Sueur County, Minnesota. It was in force for 35 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
Jun 28, 2021, 12:55 PM CDT (17:55 UTC)
Expired
Jun 28, 2021, 1:30 PM CDT
In force
35 min
Issued by
NWS Twin Cities, MN

County Le Sueur County, MN

The radar

The Minneapolis radar (KMPX), 48 km from the middle of the area, began a volume at 17:57 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 12:00Z, 5.9 hours before the alert went out and 47 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 12:00Z on 2021-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 591 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 12:00Z on 2021-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 square meters per square second.1939587897117Sfc1 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
591 J/kg
Mixed-layer CIN
-36 J/kg
Mixed-layer LCL
860 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
62 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

383 
WWUS83 KMPX 281755
SPSMPX

Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1255 PM CDT Mon Jun 28 2021

MNZ076-281830-
Le Sueur-
1255 PM CDT Mon Jun 28 2021

...A STRONG THUNDERSTORM WITH GUSTY WINDS AND SMALL HAIL WILL AFFECT 
NORTHERN LE SUEUR COUNTY...

At 1254 PM CDT, a strong thunderstorm was located near Le Sueur, or
22 miles north of Mankato, moving east at 20 mph.

Winds in excess of 45 mph and dime size hail are possible with this 
storm.

Locations impacted include...
New Prague, Le Sueur, Montgomery, Le Center, Henderson, Heidelberg,
St Thomas and St Henry.

LAT...LON 4440 9395 4445 9393 4451 9388 4454 9391
      4454 9352 4433 9352
TIME...MOT...LOC 1754Z 262DEG 19KT 4446 9382 

$$

JRB

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 28, 11:26 AM CDTSpecial Weather StatementMPXSibley34 min
Jun 28, 12:09 PM CDTSpecial Weather StatementMPXWatonwan36 min
Jun 28, 12:39 PM CDTSpecial Weather StatementMPXCarver36 min
Jun 28, 1:01 PM CDTSpecial Weather StatementMPXHennepin44 min
Jun 28, 1:29 PM CDTSpecial Weather StatementMPXAnoka31 min
Jun 28, 1:37 PM CDTSpecial Weather StatementMPXScott23 min
Jun 28, 1:59 PM CDTSpecial Weather StatementMPXRamsey16 min
Jun 28, 3:43 PM CDTSpecial Weather StatementMPXRedwood32 min
Jun 28, 4:32 PM CDTSpecial Weather StatementMPXStevens43 min
Jun 28, 4:34 PM CDTSpecial Weather StatementMPXRusk26 min

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.