Alert archive / South Dakota / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 155, NWS Aberdeen, SD

July 10, 2018Grant County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 10, 2018, 5:56 AM CDT for Grant County, South Dakota. It was in force for 34 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 10, 2018, 5:56 AM CDT (10:56 UTC)
Expired
Jul 10, 2018, 6:30 AM CDT
In force
34 min
Issued by
NWS Aberdeen, SD
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Grant County, SD

The radar

The Aberdeen radar (KABR), 132 km from the middle of the area, began a volume at 10:56 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

Bismarck Municip, ND (KBIS), launched 00:00Z, 10.9 hours before the alert went out and 352 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 2018-07-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 628 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 2018-07-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 168 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
628 J/kg
Mixed-layer CIN
-242 J/kg
Mixed-layer LCL
1392 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
168 m²/s²
0-3 km storm-relative helicity
362 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 10, 3:29 AM CDTSpecial Weather StatementABRMarshall16 min
Jul 10, 4:06 AM CDTSpecial Weather StatementABRDay, Marshall54 min
Jul 10, 4:42 AM CDTSevere Thunderstorm WarningABRGrant, Roberts48 min
Jul 10, 5:39 AM CDTSpecial Weather StatementABRGrant36 min
Jul 10, 5:40 AM CDTSpecial Weather StatementABRDay35 min
Jul 10, 5:54 AM CDTSevere Thunderstorm WarningABRDay, Roberts36 min
Jul 10, 6:03 AM CDTSpecial Weather StatementABRMcPherson27 min
Jul 10, 6:20 AM CDTSevere Thunderstorm WarningABRCodington, Day, Grant, Roberts40 min
Jul 10, 6:35 AM CDTSpecial Weather StatementABRBrown, Edmunds25 min
Jul 10, 6:57 AM CDTSpecial Weather StatementABRGrant33 min
Jul 10, 7:03 AM CDTSpecial Weather StatementABRDay, Faulk, Spink42 min
Jul 10, 7:06 AM CDTSevere Thunderstorm WarningABRDeuel, Grant24 min
Jul 10, 3:06 PM CDTHeat AdvisoryABRBrown, Buffalo, Clark, Codington, Day, Deuel and 10 more29 hr

Nearby

Severe Thunderstorm Warnings in South Dakota, 2018Every severe thunderstorm 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.