Alert archive / Minnesota / Special Weather Statements in 2020

Special Weather Statement, NWS Twin Cities, MN

August 24, 2020Chippewa County, Minnesota

NWS Twin Cities, MN issued this special weather statement at Aug 24, 2020, 6:10 AM CDT for Chippewa County, Minnesota. It was in force for 50 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: Aug 24, 2020, 6:10 AM CDT (11:10 UTC)
Expired: Aug 24, 2020, 7:00 AM CDT
In force: 50 min
Issued by: NWS Twin Cities, MN

County Chippewa County, MN

The radar

The Minneapolis radar (KMPX), 150 km from the middle of the area, began a volume at 11:09 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, 11.2 hours before the alert went out and 147 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: 669 J/kg
Mixed-layer CIN: -226 J/kg
Mixed-layer LCL: 1807 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 53 m²/s²
0-3 km storm-relative helicity: 136 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Twin Cities, MN wrote its last area forecast discussion before this special weather statement went out at Aug 24, 3:44 AM CDT, 2 hours 26 minutes earlier.

Area forecast discussion, Aug 24, 3:44 AM CDT, 2 hours 26 minutes before

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Hazardous weather outlook, Aug 24, 4:19 AM CDT, 1 hour 51 minutes before

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In the hours before

Local storm report, Aug 24, 2:42 AM CDT, 3 hours 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
242 AM CDT MON AUG 24 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0240 AM     TSTM WND GST     2 WNW BENSON            45.33N 95.65W
08/24/2020  M79 MPH          SWIFT              MN   AWOS

            MEASURED AT KBBB.

&&

Local storm report, Aug 24, 2:53 AM CDT, 3 hours 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
253 AM CDT MON AUG 24 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0250 AM     TSTM WND DMG     BENSON                  45.32N 95.60W
08/24/2020                   SWIFT              MN   LAW ENFORCEMENT

            TREES OF VARIOUS SIZE AND POWER LINES DOWN.

&&

TDH

Local storm report, Aug 24, 2:55 AM CDT, 3 hours 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
255 AM CDT MON AUG 24 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0250 AM     TSTM WND GST     2 WNW BENSON            45.33N 95.65W
08/24/2020  M84 MPH          SWIFT              MN   AWOS

            CORRECTS PREVIOUS TSTM WND GST REPORT FROM 2
            WNW BENSON. MEASURED AT KBBB.

&&

Local storm report, Aug 24, 3:20 AM CDT, 2 hours 50 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
320 AM CDT MON AUG 24 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0312 AM     TSTM WND GST     3 SE PENNOCK            45.12N 95.14W
08/24/2020  M61 MPH          KANDIYOHI          MN   PUBLIC

            MEASURED AT KBDH.

&&

Special weather statement, Aug 24, 5:31 AM CDT, 39 minutes before

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Special weather statement, Aug 24, 6:10 AM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 24, 1:39 AM CDT	Special Weather Statement	MPX	Stevens	66 min
Aug 24, 1:58 AM CDT	Severe Thunderstorm Warning	MPX	Stevens	46 min
Aug 24, 2:21 AM CDT	Severe Thunderstorm Warning	MPX	Swift	43 min
Aug 24, 2:30 AM CDT	Severe Thunderstorm Warning	MPX	Pope, Stevens, Swift	35 min
Aug 24, 2:41 AM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Kandiyohi, Pope, Swift	49 min
Aug 24, 3:13 AM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Meeker, Renville	62 min
Aug 24, 3:40 AM CDT	Heat Advisory	MPX	Anoka, Blue Earth, Brown, Carver, Chippewa, Dakota and 20 more	16 hr
Aug 24, 3:52 AM CDT	Severe Thunderstorm Warning	MPX	McLeod, Meeker, Wright	38 min
Aug 24, 5:31 AM CDT	Special Weather Statement	MPX	Swift	44 min
Aug 24, 6:43 AM CDT	Special Weather Statement	MPX	Renville	47 min
Aug 24, 7:30 AM CDT	Special Weather Statement	MPX	Nicollet, Sibley	60 min

Nearby

Special Weather Statements in Minnesota, 2020 Every special weather statement in 2020

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.