Alert archive / Minnesota / Special Weather Statements in 2021

Special Weather Statement, NWS Twin Cities, MN

July 13, 2021Brown County, Minnesota

NWS Twin Cities, MN issued this special weather statement at Jul 13, 2021, 5:15 PM CDT for Brown County, Minnesota. It was in force for 45 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 13, 2021, 5:15 PM CDT (22:15 UTC)
Expired
Jul 13, 2021, 6:00 PM CDT
In force
45 min
Issued by
NWS Twin Cities, MN

County Brown County, MN

The radar

The Minneapolis radar (KMPX), 105 km from the middle of the area, began a volume at 22:19 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, 10.3 hours before the alert went out and 102 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 2021-07-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2021-07-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1396 m above ground
0-6 km bulk shear
0 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
0 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

216 
WWUS83 KMPX 132215
SPSMPX

Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
515 PM CDT Tue Jul 13 2021

MNZ065-067-073>075-132300-
Brown-Sibley-Renville-Nicollet-Redwood-
515 PM CDT Tue Jul 13 2021

...A STRONG THUNDERSTORM WILL AFFECT EAST CENTRAL REDWOOD...
SOUTHWESTERN SIBLEY...NORTH CENTRAL BROWN...SOUTHEASTERN RENVILLE AND
NORTHWESTERN NICOLLET COUNTIES...

At 515 PM CDT, a strong thunderstorm was located near Franklin, or 14
miles east of Redwood Falls, moving southeast at 15 mph.

Wind gusts up to 50 mph and nickel size hail are possible with this
storm.

Locations impacted include...
Fairfax, Gibbon and Franklin. 

LAT...LON 4442 9487 4446 9494 4450 9500 4463 9487
      4460 9459 4452 9442 4436 9475
TIME...MOT...LOC 2215Z 306DEG 13KT 4455 9481 

$$

JLT

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 13, 4:41 PM CDTSpecial Weather StatementMPXRenville34 min
Jul 13, 5:33 PM CDTSpecial Weather StatementMPXBrown42 min
Jul 13, 5:38 PM CDTSevere Thunderstorm WarningMPXBrown, Redwood, Renville39 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.