Alert archive / Minnesota / Special Weather Statements in 2021

Special Weather Statement, NWS Twin Cities, MN

May 30, 2021Mille Lacs County, Minnesota

NWS Twin Cities, MN issued this special weather statement at May 30, 2021, 9:16 PM CDT for Mille Lacs County, Minnesota. It was in force for 44 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: May 30, 2021, 9:16 PM CDT (02:16 UTC)
Expired: May 30, 2021, 10:00 PM CDT
In force: 44 min
Issued by: NWS Twin Cities, MN

County Mille Lacs County, MN

The radar

The Minneapolis radar (KMPX), 132 km from the middle of the area, began a volume at 02:18 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, 2.3 hours before the alert went out and 131 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 7 J/kg
Mixed-layer CIN: -110 J/kg
Mixed-layer LCL: 757 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 76 m²/s²
0-3 km storm-relative helicity: 103 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

074 
WWUS83 KMPX 310216
SPSMPX

Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
916 PM CDT Sun May 30 2021

MNZ043-044-310300-
Morrison-Mille Lacs-
916 PM CDT Sun May 30 2021

...A LINE OF STORMS WILL AFFECT MILLE LACS AND SOUTHEASTERN MORRISON
COUNTIES...

At 915 PM CDT, radar indicated strong thunderstorms were located
along a line extending from near Vineland to near Lastrup to 5 miles
southwest of Pierz. Movement was east at 35 mph.

Winds in excess of 40 mph and dime size hail are possible with these
storms.

These storms will be near...
  Vineland around 925 PM CDT.
  Onamia and Wahkon around 945 PM CDT.
  Isle around 950 PM CDT.

Other locations impacted by these storms include Buckman, Morrill,
Lake Mille Lacs, Hillman, Bayview and Genola.

If you are on or near a lake, get out of the water and move indoors 
or inside a vehicle. Remember, lightning can strike out to 10 miles 
from the parent thunderstorm. If you can hear thunder, you are close 
enough to be struck by lightning. Move to safe shelter now! Do not 
be caught on the water in a thunderstorm.

LAT...LON 4598 9343 4598 9352 4587 9352 4582 9363
      4583 9435 4603 9409 4616 9397 4616 9381
      4624 9381 4624 9343
TIME...MOT...LOC 0215Z 278DEG 29KT 4622 9384 4603 9401 4592 9417 

$$

Borghoff

The office that day

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

Issued	Product	Office	Counties	Lasted
May 31, 4:35 PM CDT	Special Weather Statement	MPX	Eau Claire	25 min
May 31, 4:58 PM CDT	Special Weather Statement	MPX	Eau Claire	32 min

Nearby

Special Weather Statements in Minnesota, 2021 Every 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.