Alert archive / Minnesota / Special Weather Statements in 2021

Special Weather Statement, NWS Twin Cities, MN

July 28, 2021Pope County, Stevens County, Minnesota

NWS Twin Cities, MN issued this special weather statement at Jul 28, 2021, 4:13 AM CDT for Pope County, Stevens County, Minnesota. It was in force for 32 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 28, 2021, 4:13 AM CDT (09:13 UTC)
Expired: Jul 28, 2021, 4:45 AM CDT
In force: 32 min
Issued by: NWS Twin Cities, MN
Hail: 0.75 in
Wind: 40

Counties Pope County, MN, Stevens County, MN

The radar

The Aberdeen radar (KABR), 182 km from the middle of the area, began a volume at 09:12 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

Aberdeen, SD (KABR), launched 00:00Z, 9.2 hours before the alert went out and 195 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: 3728 J/kg
Mixed-layer CIN: -131 J/kg
Mixed-layer LCL: 1430 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 65 m²/s²
0-3 km storm-relative helicity: 256 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 7.9

Open this sounding in Storm Lab

The text

As transmitted.

216 
WWUS83 KMPX 280913
SPSMPX

Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
413 AM CDT Wed Jul 28 2021
 
MNZ047-048-055-280945-
Stevens MN-Pope MN-Swift MN-
413 AM CDT Wed Jul 28 2021

...A strong thunderstorm will impact portions of southwestern Pope,
Stevens and northwestern Swift Counties through 445 AM CDT...

At 412 AM CDT, Doppler radar was tracking a strong thunderstorm near
Chokio, or 11 miles northwest of Morris, moving southeast at 40 mph.

HAZARD...Winds in excess of 40 mph and penny 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.

This strong thunderstorm will be near...
  Lake Hattie around 425 AM CDT.
  Morris around 430 AM CDT.

Other locations in the path of this storm include Hancock.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

&&

LAT...LON 4576 9625 4576 9599 4558 9541 4520 9596
      4530 9612 4541 9612 4541 9622 4542 9625
      4573 9626
TIME...MOT...LOC 0912Z 309DEG 35KT 4565 9613 

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH

$$

TDH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 28, 4:19 AM CDT	Special Weather Statement	MPX	Todd	26 min
Jul 28, 4:45 AM CDT	Special Weather Statement	MPX	Stearns	30 min
Jul 28, 4:46 AM CDT	Special Weather Statement	MPX	Chippewa, Pope, Stevens, Swift	44 min
Jul 28, 4:53 AM CDT	Severe Thunderstorm Warning	MPX	Pope, Stevens	28 min
Jul 28, 4:54 AM CDT	Severe Thunderstorm Warning	MPX	Stearns, Todd	36 min
Jul 28, 5:29 AM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Meeker, Stearns	46 min
Jul 28, 6:17 AM CDT	Special Weather Statement	MPX	Meeker	28 min
Jul 28, 6:45 AM CDT	Special Weather Statement	MPX	Carver, Wright	30 min
Jul 28, 7:19 AM CDT	Special Weather Statement	MPX	Carver, Le Sueur, Nicollet	41 min
Jul 28, 11:43 AM CDT	Special Weather Statement	MPX	Chisago	32 min
Jul 28, 11:59 AM CDT	Severe Thunderstorm Warning	MPX	Chisago, Washington	31 min
Jul 28, 12:28 PM CDT	Special Weather Statement	MPX	Saint Croix	32 min
Jul 28, 12:54 PM CDT	Special Weather Statement	MPX	Pierce	36 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.