Alert archive / South Dakota / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 166, NWS Aberdeen, SD

September 18, 2013Dewey County, Potter County, Sully County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Sep 18, 2013, 6:49 PM MDT for Dewey County, Potter County, Sully County, South Dakota. It was in force for 26 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Sep 18, 2013, 6:49 PM MDT (00:49 UTC)
Expired
Sep 18, 2013, 7:15 PM MDT
In force
26 min
Issued by
NWS Aberdeen, SD
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Dewey County, SD, Potter County, SD, Sully County, SD

The radar

The Aberdeen radar (KABR), 159 km from the middle of the area, began a volume at 00:50 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Sep 18, 3:56 PM MDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 0.8 hours before the alert went out and 151 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-pSkew-T log-p diagram, Aberdeen, SD at 00:00Z on 2013-09-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2831 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Aberdeen, SD at 00:00Z on 2013-09-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 49 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
2831 J/kg
Mixed-layer CIN
-60 J/kg
Mixed-layer LCL
1663 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
49 m²/s²
0-3 km storm-relative helicity
186 m²/s²
Significant tornado parameter
0.8
Supercell composite
6.8

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 18, 6:01 PM MDTSevere Thunderstorm WarningABRDewey, Stanley29 min
Sep 18, 6:23 PM MDTSevere Thunderstorm WarningABRCorson, Dewey52 min
Sep 18, 6:30 PM MDTSevere Thunderstorm WarningABRDewey, Potter, Stanley, Sully45 min
Sep 18, 6:33 PM MDTSevere Thunderstorm WarningABRSpink57 min
Sep 18, 6:44 PM MDTSevere Thunderstorm WarningABRBrown, Day, Marshall61 min
Sep 18, 7:16 PM MDTSevere Thunderstorm WarningABRCampbell, Corson, Dewey, Walworth44 min
Sep 18, 7:27 PM MDTSevere Thunderstorm WarningABRSpink63 min
Sep 18, 7:29 PM MDTSevere Thunderstorm WarningABRCampbell, Corson46 min
Sep 18, 7:33 PM MDTSevere Thunderstorm WarningABRCampbell, Edmunds, Faulk, McPherson, Potter, Walworth42 min
Sep 18, 7:50 PM MDTSevere Thunderstorm WarningABRCampbell, Edmunds, Faulk, McPherson, Potter, Walworth40 min
Sep 18, 7:59 PM MDTFlash Flood WarningABRFaulk, Hand, Spink6 hr
Sep 18, 7:59 PM MDTSevere Thunderstorm WarningABRBrown, Marshall61 min
Sep 18, 8:08 PM MDTSevere Thunderstorm WarningABRCampbell, Edmunds, McPherson52 min
Sep 18, 8:22 PM MDTSevere Thunderstorm WarningABRClark, Spink53 min
Sep 18, 8:29 PM MDTSevere Thunderstorm WarningABRHand, Spink46 min
Sep 18, 8:39 PM MDTSevere Thunderstorm WarningABRBrown, Edmunds, McPherson51 min
Sep 18, 9:10 PM MDTSevere Thunderstorm WarningABRClark, Codington, Hamlin, Spink65 min
Sep 18, 9:11 PM MDTSevere Thunderstorm WarningABRBrown49 min
Sep 18, 9:37 PM MDTSevere Thunderstorm WarningABRBrown, Day, Marshall38 min
Sep 18, 10:01 PM MDTSevere Thunderstorm WarningABRCodington, Hamlin44 min
Sep 18, 10:15 PM MDTSevere Thunderstorm WarningABRClark, Hamlin, Spink45 min
Sep 19, 3:21 AM MDTFlash Flood WarningABRDeuel, Grant6 hr

Nearby

Severe Thunderstorm Warnings in South Dakota, 2013Every severe thunderstorm warning in 2013

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.