Alert archive / Minnesota / Special Weather Statements in 2020

Special Weather Statement, NWS Twin Cities, MN

July 25, 2020Le Sueur County, Nicollet County, Sibley County, Minnesota

NWS Twin Cities, MN issued this special weather statement at Jul 25, 2020, 8:15 PM CDT for Le Sueur County, Nicollet County, Sibley County, Minnesota. It was in force for 2 hr. 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 25, 2020, 8:15 PM CDT (01:15 UTC)
Expired: Jul 25, 2020, 10:15 PM CDT
In force: 2 hr
Issued by: NWS Twin Cities, MN

Counties Le Sueur County, MN, Nicollet County, MN, Sibley County, MN

The radar

The Minneapolis radar (KMPX), 72 km from the middle of the area, began a volume at 01:16 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, 1.3 hours before the alert went out and 70 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: 1584 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 935 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 229 m²/s²
0-3 km storm-relative helicity: 363 m²/s²
Significant tornado parameter: 1.5
Supercell composite: 12.8

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 Jul 25, 8:06 PM CDT, 9 minutes earlier.

Area forecast discussion, Jul 25, 8:06 PM CDT, 9 minutes before

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Hazardous weather outlook, Jul 25, 12:29 PM CDT, 7 hours 46 minutes before

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In the hours before

Special weather statement, Jul 25, 6:23 PM CDT, 1 hour 52 minutes before

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Local storm report, Jul 25, 6:34 PM CDT, 1 hour 41 minutes before

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Local storm report, Jul 25, 6:42 PM CDT, 1 hour 33 minutes before

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Special weather statement, Jul 25, 7:08 PM CDT, 1 hour 7 minutes before

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Special weather statement, Jul 25, 8:15 PM 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
Jul 25, 7:08 PM CDT	Special Weather Statement	MPX	Nicollet	52 min
Jul 25, 7:20 PM CDT	Tornado Warning	MPX	Nicollet, Sibley	25 min
Jul 25, 8:20 PM CDT	Flash Flood Warning	MPX	Le Sueur, Nicollet, Scott, Sibley	6 hr
Jul 25, 8:54 PM CDT	Flash Flood Warning	MPX	Brown, Nicollet, Renville, Sibley	8 hr
Jul 25, 9:18 PM CDT	Flash Flood Watch	MPX	Blue Earth, Brown, Dakota, Goodhue, Le Sueur, Nicollet and 5 more	12 hr
Jul 25, 9:34 PM CDT	Flash Flood Warning	MPX	Blue Earth, Le Sueur, Nicollet, Rice	6 hr
Jul 26, 2:22 AM CDT	Special Weather Statement	MPX	Renville	38 min
Jul 26, 2:24 AM CDT	Flash Flood Warning	MPX	Le Sueur, Nicollet, Scott, Sibley	5 hr
Jul 26, 2:26 AM CDT	Special Weather Statement	MPX	Douglas, Pope, Stevens	34 min
Jul 26, 2:44 AM CDT	Special Weather Statement	MPX	Lac qui Parle, Swift	31 min
Jul 26, 3:01 AM CDT	Special Weather Statement	MPX	Douglas, Pope, Todd	44 min
Jul 26, 3:10 AM CDT	Flash Flood Warning	MPX	Blue Earth, Le Sueur, Nicollet, Rice, Waseca	5 hr
Jul 26, 3:18 AM CDT	Special Weather Statement	MPX	Chippewa, Lac qui Parle, Swift	27 min
Jul 26, 3:45 AM CDT	Special Weather Statement	MPX	Todd	30 min
Jul 26, 4:30 AM CDT	Special Weather Statement	MPX	Benton, Stearns	30 min
Jul 26, 4:57 AM CDT	Flash Flood Warning	MPX	Brown, Nicollet, Redwood, Renville, Sibley	3 hr
Jul 26, 8:04 AM CDT	Areal Flood Warning	MPX	Blue Earth, Brown, Le Sueur, Nicollet, Redwood, Renville and 2 more	9 hr

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.