Alert archive / South Dakota / Wind Advisories in 2011

Wind Advisory 28, NWS Rapid City, SD

November 4, 20115 counties in South Dakota

NWS Rapid City, SD issued this wind advisory at Nov 4, 2011, 2:50 AM MDT for 5 counties in South Dakota. It took effect at Nov 5, 2011, 9:00 AM MDT. It was in force for 14 hr.

The area

The counties it named.

The facts

Issued
Nov 4, 2011, 2:50 AM MDT (08:50 UTC)
In effect from
Nov 5, 2011, 9:00 AM MDT
Expired
Nov 5, 2011, 11:03 PM MDT
In force
14 hr
Issued by
NWS Rapid City, SD

Counties Custer County, SD, Meade County, SD, Pennington County, SD, Perkins County, SD, Tripp County, SD

The radar

The Rapid City radar (KUDX), 46 km from the middle of the area, began a volume at 08:50 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, 8.8 hours before the alert went out and 309 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 2011-11-04Temperature 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 2011-11-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 192 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3768 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
192 m²/s²
0-3 km storm-relative helicity
130 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
Nov 4, 2:50 AM MDTWind AdvisoryUNRMellette, Todd, Tripp14 hr
Nov 4, 2:36 PM MDTWinter Weather AdvisoryUNRButte, Harding, Lawrence, Meade, Pennington32 hr

Nearby

Wind Advisories in South Dakota, 2011Every wind advisory in 2011

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.