Alert archive / Minnesota / Special Weather Statements in 2021

Special Weather Statement, NWS Twin Cities, MN

July 27, 2021Mille Lacs County, Minnesota

NWS Twin Cities, MN issued this special weather statement at Jul 27, 2021, 3:59 AM CDT for Mille Lacs County, Minnesota. It was in force for 46 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 27, 2021, 3:59 AM CDT (08:59 UTC)
Expired
Jul 27, 2021, 4:45 AM CDT
In force
46 min
Issued by
NWS Twin Cities, MN
Hail
0.88 in
Wind
40

County Mille Lacs County, MN

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 9.0 hours before the alert went out and 146 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 2021-07-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1670 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 2021-07-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 146 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
1670 J/kg
Mixed-layer CIN
-151 J/kg
Mixed-layer LCL
1398 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
146 m²/s²
0-3 km storm-relative helicity
187 m²/s²
Significant tornado parameter
0.2
Supercell composite
5.9

Open this sounding in Storm Lab

The text

As transmitted.

680 
WWUS83 KMPX 270859
SPSMPX

Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
359 AM CDT Tue Jul 27 2021
 
MNZ044-270945-
Mille Lacs MN-
359 AM CDT Tue Jul 27 2021

...A strong thunderstorm will impact portions of northern Mille Lacs
County through 445 AM CDT...

At 358 AM CDT, Doppler radar was tracking a strong thunderstorm over 
Mille Lacs Lake, moving southeast at 30 mph.

HAZARD...Winds in excess of 40 mph and nickel size 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...
  Isle and Wahkon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

&&

LAT...LON 4621 9343 4598 9343 4598 9352 4620 9381
      4624 9381 4625 9374 4625 9349
TIME...MOT...LOC 0858Z 319DEG 28KT 4624 9367 

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...40 MPH

$$

MPG

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 27, 2:53 AM CDTHeat AdvisoryMPXAnoka, Blue Earth, Brown, Carver, Chippewa, Dakota and 21 more18 hr
Jul 27, 3:36 PM CDTExcessive Heat WarningMPXAnoka, Benton, Blue Earth, Brown, Carver, Chippewa and 26 more29 hr
Jul 27, 3:36 PM CDTHeat AdvisoryMPXBenton, Brown, Chippewa, Chisago, Douglas, Faribault and 22 more29 hr
Jul 26, 9:46 PM CDTSpecial Weather StatementMPXRusk59 min
Jul 27, 1:42 AM CDTSpecial Weather StatementMPXRusk63 min
Jul 27, 6:16 AM CDTSpecial Weather StatementMPXChippewa29 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.