Alert archive / South Dakota / Wind Advisories in 2014

Wind Advisory 29, NWS Rapid City, SD

September 3, 20149 counties in South Dakota

NWS Rapid City, SD issued this wind advisory at Sep 3, 2014, 2:09 PM MDT for 9 counties in South Dakota. It took effect at Sep 3, 2014, 9:00 PM MDT. It was in force for 18 hr.

The area

The counties it named.

The facts

Issued: Sep 3, 2014, 2:09 PM MDT (20:09 UTC)
In effect from: Sep 3, 2014, 9:00 PM MDT
Expired: Sep 4, 2014, 2:42 PM MDT
In force: 18 hr
Issued by: NWS Rapid City, SD

Counties Butte County, SD, Custer County, SD, Haakon County, SD, Harding County, SD, Lawrence County, SD, Meade County, SD, Pennington County, SD, Perkins County, SD, Ziebach County, SD

The radar

The Rapid City radar (KUDX), 59 km from the middle of the area, began a volume at 20:11 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

Bismarck Municip, ND (KBIS), launched 12:00Z, 8.2 hours before the alert went out and 288 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2199 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 76 m²/s²
0-3 km storm-relative helicity: 90 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this wind advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Rapid City, SD wrote its last area forecast discussion before this wind advisory went out at Sep 3, 2:03 PM MDT, 6 minutes earlier.

Area forecast discussion, Sep 3, 2:03 PM MDT, 6 minutes before

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Hazardous weather outlook, Sep 3, 3:08 AM MDT, 11 hours 1 minute before

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    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
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        Please try again in a few minutes.
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The office that day

Everything else NWS Rapid City, SD issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 3, 3:02 AM MDT	Red Flag Warning	UNR		18 hr

Nearby

Wind Advisories in South Dakota, 2014 Every wind advisory in 2014

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.