Alert archive / South Dakota / Freeze Warnings in 2018

Freeze Warning 2, NWS Aberdeen, SD

October 3, 201826 counties in South Dakota; Big Stone County, Traverse County, Minnesota

NWS Aberdeen, SD issued this freeze warning at Oct 3, 2018, 2:51 PM CDT for 26 counties in South Dakota; Big Stone County, Traverse County, Minnesota. It took effect at Oct 4, 2018, 12:00 AM CDT. It was in force for 9 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Oct 3, 2018, 2:51 PM CDT (19:51 UTC)
In effect from: Oct 4, 2018, 12:00 AM CDT
Expired: Oct 4, 2018, 9:00 AM CDT
In force: 9 hr
Issued by: NWS Aberdeen, SD

All 28 counties

Big Stone County, MN, Traverse County, MN, Brown County, SD, Buffalo County, SD, Campbell County, SD, Clark County, SD, Codington County, SD, Corson County, SD, Day County, SD, Deuel County, SD, Dewey County, SD, Edmunds County, SD, Faulk County, SD, Grant County, SD, Hamlin County, SD, Hand County, SD, Hughes County, SD, Hyde County, SD, Jones County, SD, Lyman County, SD, Marshall County, SD, McPherson County, SD, Potter County, SD, Roberts County, SD, Spink County, SD, Stanley County, SD, Sully County, SD, Walworth County, SD

The radar

The Aberdeen radar (KABR), 56 km from the middle of the area, began a volume at 19:53 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 12:00Z, 7.9 hours before the alert went out and 34 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 624 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 270 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Aberdeen, SD wrote its last area forecast discussion before this freeze warning went out at Oct 3, 12:57 PM CDT, 1 hour 54 minutes earlier.

Area forecast discussion, Oct 3, 12:57 PM CDT, 1 hour 54 minutes before

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Hazardous weather outlook, Oct 3, 4:49 AM CDT, 10 hours 2 minutes before

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In the hours before

Special weather statement, Oct 3, 2:31 PM CDT, 20 minutes before

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Local storm report, Oct 3, 2:43 PM CDT, 8 minutes before

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Local storm report, Oct 3, 2:45 PM CDT, 6 minutes before

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Local storm report, Oct 3, 2:48 PM CDT, 3 minutes before

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The office that day

Everything else NWS Aberdeen, SD issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 3, 3:24 AM CDT	Freeze Watch	ABR	Brown, Buffalo, Campbell, Clark, Codington, Corson and 20 more	11 hr
Oct 3, 3:24 AM CDT	Wind Advisory	ABR	Brown, Buffalo, Campbell, Clark, Codington, Corson and 20 more	18 hr

Nearby

Freeze Warnings in South Dakota, 2018 Freeze Warnings in Minnesota, 2018 Every freeze warning in 2018

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.