Alert archive / Minnesota / Special Weather Statements in 2021

Special Weather Statement, NWS Twin Cities, MN

July 24, 2021Morrison County, Minnesota

NWS Twin Cities, MN issued this special weather statement at Jul 24, 2021, 2:19 AM CDT for Morrison County, Minnesota. It was in force for 26 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 24, 2021, 2:19 AM CDT (07:19 UTC)
Expired
Jul 24, 2021, 2:45 AM CDT
In force
26 min
Issued by
NWS Twin Cities, MN

County Morrison County, MN

The radar

The Minneapolis radar (KMPX), 165 km from the middle of the area, began a volume at 07:23 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, 7.3 hours before the alert went out and 164 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 2021-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2540 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2021-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 124 square meters per square second.19395878Sfc1 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
2540 J/kg
Mixed-layer CIN
-32 J/kg
Mixed-layer LCL
1098 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
124 m²/s²
0-3 km storm-relative helicity
143 m²/s²
Significant tornado parameter
0.0
Supercell composite
6.4

Open this sounding in Storm Lab

The text

As transmitted.

731 
WWUS83 KMPX 240719
SPSMPX

Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
219 AM CDT Sat Jul 24 2021

MNZ042-043-240745-
Morrison-Todd-
219 AM CDT Sat Jul 24 2021

...A STRONG THUNDERSTORM WILL AFFECT EAST CENTRAL TODD AND
NORTHWESTERN MORRISON COUNTIES...

At 219 AM CDT, a strong thunderstorm was located near Randall, or 12
miles northwest of Little Falls, moving northeast at 30 mph.

Winds in excess of 40 mph are possible with this storm.

Locations impacted include...
Little Falls, Randall, Camp Ripley, Cushing, Harding, Camp Ripley
Junction and Crow Wing State Park.

LAT...LON 4630 9436 4627 9434 4623 9440 4618 9437
      4616 9437 4616 9407 4610 9399 4595 9462
      4617 9481 4632 9457 4631 9451 4633 9443
TIME...MOT...LOC 0719Z 246DEG 27KT 4607 9460 

$$

TDH

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 24, 12:03 AM CDTSpecial Weather StatementMPXStevens27 min
Jul 24, 12:36 AM CDTSpecial Weather StatementMPXSwift24 min
Jul 24, 1:07 AM CDTSpecial Weather StatementMPXPope23 min
Jul 24, 1:09 AM CDTSpecial Weather StatementMPXDouglas36 min
Jul 24, 1:37 AM CDTSevere Thunderstorm WarningMPXMorrison, Stearns, Todd38 min
Jul 24, 1:46 AM CDTSpecial Weather StatementMPXAnoka44 min
Jul 24, 1:50 AM CDTSpecial Weather StatementMPXDouglas, Todd40 min
Jul 24, 2:03 AM CDTSevere Thunderstorm WarningMPXChisago, Washington25 min
Jul 24, 2:16 AM CDTSpecial Weather StatementMPXBenton, Mille Lacs44 min
Jul 24, 2:27 AM CDTSpecial Weather StatementMPXChisago, Isanti33 min
Jul 24, 3:06 AM CDTSpecial Weather StatementMPXKanabec24 min
Jul 24, 2:32 AM CDTSpecial Weather StatementMPXPolk43 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.