Alert archive / South Dakota / Wind Advisories in 2019

Wind Advisory 2, NWS Rapid City, SD

January 7, 20195 counties in South Dakota

NWS Rapid City, SD issued this wind advisory at Jan 7, 2019, 1:20 PM MST for 5 counties in South Dakota. It took effect at Jan 7, 2019, 3:00 PM MST. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued
Jan 7, 2019, 1:20 PM MST (20:20 UTC)
In effect from
Jan 7, 2019, 3:00 PM MST
Expired
Jan 7, 2019, 10:00 PM MST
In force
7 hr
Issued by
NWS Rapid City, SD

Counties Butte County, SD, Custer County, SD, Lawrence County, SD, Meade County, SD, Pennington County, SD

The radar

The Rapid City radar (KUDX), 39 km from the middle of the area, began a volume at 20:22 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 12:00Z, 8.3 hours before the alert went out and 339 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 12:00Z on 2019-01-07Temperature 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 12:00Z on 2019-01-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -97 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
1562 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
-97 m²/s²
0-3 km storm-relative helicity
-21 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
Jan 7, 2:33 AM MSTHigh Wind WarningUNRButte, Lawrence, Meade, Pennington15 hr
Jan 7, 2:33 AM MSTWind AdvisoryUNRButte, Lawrence, Meade, Pennington11 hr
Jan 6, 5:24 PM MSTHigh Wind WatchUNRCampbell9 hr

Nearby

Wind Advisories in South Dakota, 2019Every wind advisory in 2019

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.