Alert archive / South Dakota / Freeze Warnings in 2014

Freeze Warning 4, NWS Aberdeen, SD

October 3, 201424 counties in South Dakota

NWS Aberdeen, SD issued this freeze warning at Oct 3, 2014, 4:41 AM CDT for 24 counties in South Dakota. It took effect at Oct 4, 2014, 1:00 AM CDT. It was in force for 8 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, 2014, 4:41 AM CDT (09:41 UTC)
In effect from: Oct 4, 2014, 1:00 AM CDT
Expired: Oct 4, 2014, 8:48 AM CDT
In force: 8 hr
Issued by: NWS Aberdeen, SD

All 24 counties

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, 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, Spink County, SD, Stanley County, SD, Sully County, SD, Walworth County, SD

The radar

The Aberdeen radar (KABR), 80 km from the middle of the area, began a volume at 09:42 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

Aberdeen, SD (KABR), launched 00:00Z, 9.7 hours before the alert went out and 59 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: 40 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 1819 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: -56 m²/s²
0-3 km storm-relative helicity: -24 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 2, 3:31 PM CDT, 13 hours 10 minutes earlier.

Area forecast discussion, Oct 2, 3:31 PM CDT, 13 hours 10 minutes before

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Nearby

Freeze Warnings in South Dakota, 2014 Every freeze warning in 2014

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.