Alert archive / South Dakota / Wind Chill Warnings in 2023

Wind Chill Warning 2, NWS Rapid City, SD

February 23, 20234 counties in South Dakota

NWS Rapid City, SD issued this wind chill warning at Feb 23, 2023, 1:48 PM MST for 4 counties in South Dakota. It took effect at Feb 23, 2023, 5:00 PM MST. It was in force for 16 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
Feb 23, 2023, 1:48 PM MST (20:48 UTC)
In effect from
Feb 23, 2023, 5:00 PM MST
Expired
Feb 24, 2023, 9:00 AM MST
In force
16 hr
Issued by
NWS Rapid City, SD

Counties Butte County, SD, Harding County, SD, Meade County, SD, Perkins County, SD

The radar

The Rapid City radar (KUDX), 114 km from the middle of the area, began a volume at 20:48 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 nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 8.8 hours before the alert went out and 366 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 12:00Z on 2023-02-23Temperature 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, Aberdeen, SD at 12:00Z on 2023-02-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 334 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
766 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
334 m²/s²
0-3 km storm-relative helicity
386 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
Feb 23, 12:44 AM MSTWind Chill AdvisoryUNRBennett, Butte, Custer, Fall River, Haakon, Harding and 8 more10 hr
Feb 23, 4:40 AM MSTWinter Weather AdvisoryUNRTodd, Tripp6 hr
Feb 23, 1:48 PM MSTWind Chill AdvisoryUNRBennett, Custer, Fall River, Haakon, Jackson, Lawrence and 7 more19 hr

Nearby

Wind Chill Warnings in South Dakota, 2023Wind Chill Warnings in Wyoming, 2023Every wind chill warning in 2023

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.