Alert archive / South Dakota / Wind Chill Advisories in 2020

Wind Chill Advisory 7, NWS Aberdeen, SD

February 13, 202013 counties in South Dakota; Big Stone County, Traverse County, Minnesota

NWS Aberdeen, SD issued this wind chill advisory at Feb 13, 2020, 2:51 PM CST for 13 counties in South Dakota; Big Stone County, Traverse County, Minnesota. It took effect at Feb 13, 2020, 9:00 PM CST. It was in force for 10 hr.

The area

The counties it named.

The facts

Issued: Feb 13, 2020, 2:51 PM CST (20:51 UTC)
In effect from: Feb 13, 2020, 9:00 PM CST
Expired: Feb 14, 2020, 7:00 AM CST
In force: 10 hr
Issued by: NWS Aberdeen, SD

Counties Big Stone County, MN, Traverse County, MN, Brown County, SD, Clark County, SD, Codington County, SD, Day County, SD, Deuel County, SD, Edmunds County, SD, Faulk County, SD, Grant County, SD, Hamlin County, SD, Marshall County, SD, McPherson County, SD, Roberts County, SD, Spink County, SD

The radar

The Aberdeen radar (KABR), 62 km from the middle of the area, began a volume at 20:52 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, 8.9 hours before the alert went out and 72 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: 1113 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 67 m²/s²
0-3 km storm-relative helicity: 90 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 wind chill advisory 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 wind chill advisory went out at Feb 13, 12:04 PM CST, 2 hours 47 minutes earlier.

Area forecast discussion, Feb 13, 12:04 PM CST, 2 hours 47 minutes before

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Hazardous weather outlook, Feb 13, 3:39 AM CST, 11 hours 12 minutes before

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In the hours before

Local storm report, Feb 13, 10:32 AM CST, 4 hours 19 minutes before

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Local storm report, Feb 13, 10:43 AM CST, 4 hours 8 minutes before

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Local storm report, Feb 13, 10:48 AM CST, 4 hours 3 minutes before

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Local storm report, Feb 13, 10:52 AM CST, 3 hours 59 minutes before

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Local storm report, Feb 13, 10:56 AM CST, 3 hours 55 minutes before

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Local storm report, Feb 13, 11:30 AM CST, 3 hours 21 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
Feb 13, 9:38 AM CST	Wind Chill Advisory	ABR	Brown, Buffalo, Clark, Codington, Day, Deuel and 10 more	2 hr

Nearby

Wind Chill Advisories in South Dakota, 2020 Wind Chill Advisories in Minnesota, 2020 Every wind chill advisory 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.