Alert archive / South Dakota / Wind Advisories in 2021

Wind Advisory 11, NWS Sioux Falls, SD

October 28, 2021Brule County, Charles Mix County, Gregory County, South Dakota

NWS Sioux Falls, SD issued this wind advisory at Oct 28, 2021, 10:09 AM CDT for Brule County, Charles Mix County, Gregory County, South Dakota. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
Oct 28, 2021, 10:09 AM CDT (15:09 UTC)
Expired
Oct 28, 2021, 4:00 PM CDT
In force
6 hr
Issued by
NWS Sioux Falls, SD

Counties Brule County, SD, Charles Mix County, SD, Gregory County, SD

The radar

The Sioux Falls radar (KFSD), 181 km from the middle of the area, began a volume at 15:11 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, 3.2 hours before the alert went out and 175 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 2021-10-28Temperature 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 2021-10-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -35 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
1648 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
-35 m²/s²
0-3 km storm-relative helicity
-80 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

995 
WWUS73 KFSD 281509
NPWFSD

URGENT - WEATHER MESSAGE
National Weather Service Sioux Falls SD
Issued by National Weather Service Twin Cities/Chanhassen MN
1009 AM CDT Thu Oct 28 2021

SDZ050-057-063-282100-
/O.NEW.KFSD.WI.Y.0011.211028T1509Z-211028T2100Z/
Gregory-Brule-Charles Mix-
Including the cities of Gregory, Burke, Chamberlain, Kimball, 
Wagner, Platte, Lake Andes, and Marty
1009 AM CDT Thu Oct 28 2021

...WIND ADVISORY IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON...

* WHAT...Northwest winds 20 to 30 mph with gusts up to 45 mph 
  expected.

* WHERE...Gregory, Charles Mix, and Brule Counties.

* WHEN...Until 5 PM CDT this afternoon.

* IMPACTS...Gusty winds could blow around unsecured objects. Tree
  limbs could be blown down and a few power outages may result.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/siouxfalls
1 follow-up statement
599 
WWUS73 KFSD 282106
NPWFSD

URGENT - WEATHER MESSAGE
National Weather Service Sioux Falls SD
406 PM CDT Thu Oct 28 2021

SDZ050-057-063-282215-
/O.EXP.KFSD.WI.Y.0011.000000T0000Z-211028T2100Z/
Gregory-Brule-Charles Mix-
406 PM CDT Thu Oct 28 2021

...WIND ADVISORY HAS EXPIRED...

Gusty winds will continue early this evening, but overall 
northwest winds will weaken as surface high pressure builds in 
from the west.

$$

For more information from the National Weather Service visit
https://weather.gov/siouxfalls

Nearby

Wind Advisories in South Dakota, 2021Every wind advisory in 2021

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.