Alert archive / Minnesota / Special Weather Statements in 2021

Special Weather Statement, NWS Twin Cities, MN

July 6, 2021Martin County, Minnesota

NWS Twin Cities, MN issued this special weather statement at Jul 6, 2021, 4:13 PM CDT for Martin County, Minnesota. It was in force for 32 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
Jul 6, 2021, 4:13 PM CDT (21:13 UTC)
Expired
Jul 6, 2021, 4:45 PM CDT
In force
32 min
Issued by
NWS Twin Cities, MN

County Martin County, MN

The radar

The Sioux Falls radar (KFSD), 165 km from the middle of the area, began a volume at 21:15 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, 9.2 hours before the alert went out and 166 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 2021-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 214 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 2021-07-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 17 square meters per square second.1939Sfc1 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
214 J/kg
Mixed-layer CIN
-106 J/kg
Mixed-layer LCL
1752 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
17 m²/s²
0-3 km storm-relative helicity
42 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

As transmitted.

716 
WWUS83 KMPX 062113
SPSMPX

Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
413 PM CDT Tue Jul 6 2021

MNZ091-062145-
Martin-
413 PM CDT Tue Jul 6 2021

...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN MARTIN COUNTY...

At 413 PM CDT, a strong thunderstorm was located near Sherburn, or 8
miles east of Jackson In Jackson County, moving east at 20 mph.

Winds in excess of 40 mph and dime size hail are possible with this
storm.

Locations impacted include...
Fairmont, Sherburn, Welcome, Ceylon, Iowa Lake, Okamanpedan Lake,
Dunnell, Wilbert and Foxlake.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 4350 9474 4352 9485 4372 9485 4372 9442
      4350 9446
TIME...MOT...LOC 2113Z 276DEG 15KT 4362 9482 

$$

NDC

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 6, 3:51 PM CDTSpecial Weather StatementMPXMartin39 min
Jul 6, 6:06 PM CDTSpecial Weather StatementMPXFreeborn39 min
Jul 6, 2:49 PM CDTSpecial Weather StatementMPXEau Claire41 min
Jul 6, 3:20 PM CDTSevere Thunderstorm WarningMPXEau Claire10 min
Jul 6, 6:10 PM CDTSpecial Weather StatementMPXPepin35 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.