Alert archive / South Dakota / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 71, NWS Rapid City, SD

June 18, 2016Butte County, South Dakota; Crook County, Wyoming

NWS Rapid City, SD issued this severe thunderstorm warning at Jun 18, 2016, 2:51 AM MDT for Butte County, South Dakota; Crook County, Wyoming. It was in force for 54 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
Jun 18, 2016, 2:51 AM MDT (08:51 UTC)
Expired
Jun 18, 2016, 3:45 AM MDT
In force
54 min
Issued by
NWS Rapid City, SD
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Butte County, SD, Crook County, WY

The radar

The Rapid City radar (KUDX), 118 km from the middle of the area, began a volume at 08:52 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

Rapid City, SD (KRAP), launched 00:00Z, 8.9 hours before the alert went out and 119 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, Rapid City, SD at 00:00Z on 2016-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 9 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, Rapid City, SD at 00:00Z on 2016-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -9 square meters per square second.193958Sfc1 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
9 J/kg
Mixed-layer CIN
-417 J/kg
Mixed-layer LCL
2176 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
-9 m²/s²
0-3 km storm-relative helicity
72 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 18, 3:36 AM MDTSevere Thunderstorm WarningUNRButte, Lawrence, Meade54 min
Jun 18, 4:24 AM MDTSpecial Weather StatementUNRLawrence, Meade81 min
Jun 18, 5:47 AM MDTSpecial Weather StatementUNRButte58 min
Jun 18, 7:10 AM MDTSpecial Weather StatementUNRMeade50 min
Jun 18, 2:20 PM MDTWind AdvisoryUNRFall River, Oglala Lakota13 hr
Jun 17, 7:56 PM MDTSevere Thunderstorm WarningUNRCampbell64 min
Jun 17, 8:12 PM MDTSpecial Weather StatementUNRCrook33 min
Jun 18, 1:01 AM MDTSpecial Weather StatementUNRCampbell44 min
Jun 18, 1:29 AM MDTSpecial Weather StatementUNRCrook46 min
Jun 18, 1:47 AM MDTSpecial Weather StatementUNRCrook58 min
Jun 18, 2:35 AM MDTSpecial Weather StatementUNRCrook55 min
Jun 18, 3:11 PM MDTRed Flag WarningUNR6 hr

Nearby

Severe Thunderstorm Warnings in South Dakota, 2016Severe Thunderstorm Warnings in Wyoming, 2016Every severe thunderstorm warning in 2016

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.