Alert archive / South Dakota / High Wind Warnings in 2018

High Wind Warning 4, NWS Rapid City, SD

December 12, 2018Meade County, Pennington County, South Dakota

NWS Rapid City, SD issued this high wind warning at Dec 12, 2018, 2:44 AM MST for Meade County, Pennington County, South Dakota. It took effect at Dec 12, 2018, 2:00 PM MST. It was in force for 6 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
Dec 12, 2018, 2:44 AM MST (09:44 UTC)
In effect from
Dec 12, 2018, 2:00 PM MST
Expired
Dec 12, 2018, 8:28 PM MST
In force
6 hr
Issued by
NWS Rapid City, SD

Counties Meade County, SD, Pennington County, SD

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 9.7 hours before the alert went out and 320 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 2018-12-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2018-12-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -79 square meters per square second.1939Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1247 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
-79 m²/s²
0-3 km storm-relative helicity
-39 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
Dec 12, 2:41 AM MSTWinter Weather AdvisoryUNRCuster, Lawrence, Meade, Pennington17 hr
Dec 12, 2:44 AM MSTWind AdvisoryUNRButte, Custer, Haakon, Harding, Jackson, Lawrence and 3 more18 hr

Nearby

High Wind Warnings in South Dakota, 2018Every high wind 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.