Alert archive / Minnesota / Special Weather Statements in 2021

Special Weather Statement, NWS Twin Cities, MN

June 24, 2021Sherburne County, Minnesota

NWS Twin Cities, MN issued this special weather statement at Jun 24, 2021, 2:39 AM CDT for Sherburne County, Minnesota. It was in force for 36 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: Jun 24, 2021, 2:39 AM CDT (07:39 UTC)
Expired: Jun 24, 2021, 3:15 AM CDT
In force: 36 min
Issued by: NWS Twin Cities, MN

County Sherburne County, MN

The radar

The Minneapolis radar (KMPX), 72 km from the middle of the area, began a volume at 07:42 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, 7.7 hours before the alert went out and 71 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: 561 J/kg
Mixed-layer CIN: -125 J/kg
Mixed-layer LCL: 1897 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 64 m²/s²
0-3 km storm-relative helicity: 144 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.4

Open this sounding in Storm Lab

The text

As transmitted.

261 
WWUS83 KMPX 240739
SPSMPX

Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
239 AM CDT Thu Jun 24 2021

MNZ051-240815-
Sherburne-
239 AM CDT Thu Jun 24 2021

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN SHERBURNE COUNTY...

At 238 AM CDT, a strong thunderstorm was located near Clear Lake, or
10 miles southeast of St. Cloud, moving southeast at 45 mph.

Half inch hail is possible with this storm.

This storm will be near...
  Becker around 250 AM CDT.
  Big Lake around 300 AM CDT.
  Zimmerman around 305 AM CDT.

Other locations impacted by this storm include Sherburne National
Wildlife Refuge, Orrock, Santiago and St Cloud Airport.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 4547 9354 4529 9372 4550 9410 4556 9404
      4556 9385
TIME...MOT...LOC 0738Z 303DEG 39KT 4551 9399 

$$

Borghoff

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 24, 3:37 AM CDT	Special Weather Statement	MPX	Barron	38 min
Jun 24, 3:43 AM CDT	Severe Thunderstorm Warning	MPX	Barron	31 min
Jun 24, 4:52 AM CDT	Special Weather Statement	MPX	Rusk	38 min
Jun 24, 2:33 PM CDT	Special Weather Statement	MPX	Chippewa	42 min
Jun 24, 3:04 PM CDT	Severe Thunderstorm Warning	MPX	Barron, Chippewa, Dunn	41 min
Jun 24, 3:42 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa	48 min
Jun 24, 4:20 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Eau Claire	27 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.