Alert archive / Minnesota / Special Weather Statements in 2019

Special Weather Statement, NWS Twin Cities, MN

September 30, 20194 counties in Minnesota

NWS Twin Cities, MN issued this special weather statement at Sep 30, 2019, 8:40 PM CDT for 4 counties in Minnesota. It was in force for 80 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: Sep 30, 2019, 8:40 PM CDT (01:40 UTC)
Expired: Sep 30, 2019, 10:00 PM CDT
In force: 80 min
Issued by: NWS Twin Cities, MN

Counties Faribault County, MN, Freeborn County, MN, Steele County, MN, Waseca County, MN

The radar

The Minneapolis radar (KMPX), 114 km from the middle of the area, began a volume at 01:42 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

Omaha, NE (KOAX), launched 00:00Z, 1.7 hours before the alert went out and 356 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: 1537 J/kg
Mixed-layer CIN: -76 J/kg
Mixed-layer LCL: 1798 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 134 m²/s²
0-3 km storm-relative helicity: 180 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 11.1

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 Sep 30, 3:42 PM CDT, 4 hours 58 minutes earlier.

Area forecast discussion, Sep 30, 3:42 PM CDT, 4 hours 58 minutes before

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Hazardous weather outlook, Sep 30, 3:04 PM CDT, 5 hours 36 minutes before

Hazardous Weather Outlook
National Weather Service Twin Cities/Chanhassen MN
304 PM CDT Mon Sep 30 2019

MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028-
012015-
Douglas-Todd-Morrison-Mille Lacs-Kanabec-Stevens-Pope-Stearns-
Benton-Sherburne-Isanti-Chisago-Lac Qui Parle-Swift-Chippewa-
Kandiyohi-Meeker-Wright-Hennepin-Anoka-Ramsey-Washington-
Yellow Medicine-Renville-McLeod-Sibley-Carver-Scott-Dakota-
Redwood-Brown-Nicollet-Le Sueur-Rice-Goodhue-Watonwan-Blue Earth-
Waseca-Steele-Martin-Faribault-Freeborn-Polk-Barron-Rusk-
St. Croix-Pierce-Dunn-Pepin-Eau Claire-
304 PM CDT Mon Sep 30 2019

This Hazardous Weather Outlook is for portions of central and
southern Minnesota...and west central Wisconsin.

.DAY ONE...This Afternoon and Tonight

Strong thunderstorms producing heavy rainfall are possible, with
a slight risk of severe storms this afternoon and evening. Large
hail, damaging winds, and a couple tornadoes are possible.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

Occasional thunderstorms will continue Tuesday into Tuesday
evening. Heavy rainfall and attendant flooding will be possible,
primarily across far southern Minnesota. Severe weather is not
expected.

.SPOTTER INFORMATION STATEMENT...

SKYWARN spotter activation may be needed this evening.

In the hours before

Special weather statement, Sep 30, 6:53 PM CDT, 1 hour 47 minutes before

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Special weather statement, Sep 30, 7:41 PM CDT, 59 minutes before

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Special weather statement, Sep 30, 8:15 PM CDT, 25 minutes before

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Special weather statement, Sep 30, 8:35 PM CDT, 5 minutes before

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Special weather statement, Sep 30, 8:40 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
Sep 30, 7:41 PM CDT	Special Weather Statement	MPX	Chisago	34 min
Sep 30, 8:35 PM CDT	Special Weather Statement	MPX	Goodhue	40 min
Oct 1, 12:03 AM CDT	Special Weather Statement	MPX	Faribault	57 min
Oct 1, 12:52 AM CDT	Special Weather Statement	MPX	Faribault, Freeborn	53 min
Oct 1, 1:49 AM CDT	Special Weather Statement	MPX	Freeborn	56 min
Oct 1, 3:54 PM CDT	River Flood Warning	MPX	Kanabec	63 hr
Sep 30, 8:15 PM CDT	Special Weather Statement	MPX	Pierce	45 min
Sep 30, 8:59 PM CDT	Special Weather Statement	MPX	Pierce	31 min

Nearby

Special Weather Statements in Minnesota, 2019 Every special weather statement in 2019

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.