Alert archive / South Dakota / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 187, NWS Aberdeen, SD

July 27, 2008Corson County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 27, 2008, 1:48 AM MDT for Corson County, South Dakota. It was in force for 57 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
Jul 27, 2008, 1:48 AM MDT (07:48 UTC)
Expired
Jul 27, 2008, 2:45 AM MDT
In force
57 min
Issued by
NWS Aberdeen, SD
Area
Storm-based polygon

County Corson County, SD

The radar

The Bismarck radar (KBIS), 123 km from the middle of the area, began a volume at 07:48 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
Jul 26, 8:02 PM MDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 7.8 hours before the alert went out and 124 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, Bismarck Municip, ND at 00:00Z on 2008-07-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1479 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, Bismarck Municip, ND at 00:00Z on 2008-07-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -24 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
1479 J/kg
Mixed-layer CIN
-65 J/kg
Mixed-layer LCL
1551 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
-24 m²/s²
0-3 km storm-relative helicity
66 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.7

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 26, 9:10 PM MDTSevere Thunderstorm WarningABRDewey, Stanley, Sully65 min
Jul 26, 10:01 PM MDTSevere Thunderstorm WarningABRJones, Lyman, Stanley46 min
Jul 26, 10:09 PM MDTSevere Thunderstorm WarningABRDewey, Hughes, Stanley, Sully66 min
Jul 26, 10:56 PM MDTSevere Thunderstorm WarningABRBuffalo, Hand, Hughes, Hyde, Lyman, Stanley and 1 more64 min
Jul 27, 2:39 AM MDTSevere Thunderstorm WarningABRCampbell, Corson66 min
Jul 27, 3:48 AM MDTSevere Thunderstorm WarningABRCampbell, McPherson57 min
Jul 27, 4:32 AM MDTSevere Thunderstorm WarningABRBrown, Edmunds, Faulk, McPherson, Potter, Spink58 min
Jul 27, 5:24 AM MDTSevere Thunderstorm WarningABRBrown, Clark, Codington, Day, Faulk, Hamlin and 2 more66 min
Jul 27, 5:56 AM MDTSevere Thunderstorm WarningABRHand, Spink34 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2008Every severe thunderstorm warning in 2008

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.