Alert archive / South Dakota / Winter Storm Warnings in 2018

Winter Storm Warning 5, NWS Aberdeen, SD

March 15, 20185 counties in South Dakota

NWS Aberdeen, SD issued this winter storm warning at Mar 15, 2018, 2:42 PM CDT for 5 counties in South Dakota. It took effect at Mar 16, 2018, 4:00 AM CDT. It was in force for 15 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: Mar 15, 2018, 2:42 PM CDT (19:42 UTC)
In effect from: Mar 16, 2018, 4:00 AM CDT
Expired: Mar 16, 2018, 7:00 PM CDT
In force: 15 hr
Issued by: NWS Aberdeen, SD

Counties Buffalo County, SD, Hughes County, SD, Jones County, SD, Lyman County, SD, Stanley County, SD

The radar

The Aberdeen radar (KABR), 197 km from the middle of the area, began a volume at 19:39 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, 7.7 hours before the alert went out and 158 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: 2381 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 60 m²/s²
0-3 km storm-relative helicity: 128 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 winter storm 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 winter storm warning went out at Mar 15, 2:42 PM CDT, 0 minutes earlier.

Area forecast discussion, Mar 15, 2:42 PM CDT, 0 minutes before

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Hazardous weather outlook, Mar 15, 4:24 AM CDT, 10 hours 18 minutes before

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        The site you requested is temporarily down for maintenance or an unexpected outage.
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        Please try again in a few minutes.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 15, 3:46 AM CDT	Winter Storm Watch	ABR	Jones, Lyman, Stanley	11 hr
Mar 15, 3:46 AM CDT	Winter Weather Advisory	ABR	Buffalo, Dewey, Hand, Hughes, Hyde, Jones and 3 more	45 hr

Nearby

Winter Storm Warnings in South Dakota, 2018 Every winter storm 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.