Alert archive / South Dakota / Wind Advisories in 2016

Wind Advisory 20, NWS Rapid City, SD

July 11, 20164 counties in South Dakota

NWS Rapid City, SD issued this wind advisory at Jul 11, 2016, 4:32 PM MDT for 4 counties in South Dakota. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued: Jul 11, 2016, 4:32 PM MDT (22:32 UTC)
Expired: Jul 11, 2016, 9:00 PM MDT
In force: 4 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 22:31 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, 10.5 hours before the alert went out and 257 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: 1187 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: 6 m²/s²
0-3 km storm-relative helicity: -53 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 Jul 11, 2:22 PM MDT, 2 hours 10 minutes earlier.

Area forecast discussion, Jul 11, 2:22 PM MDT, 2 hours 10 minutes before

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Hazardous weather outlook, Jul 11, 4:01 AM MDT, 12 hours 31 minutes before

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In the hours before

Local storm report, Jul 11, 4:08 PM MDT, 24 minutes before

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  <main class="wrap">
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      <div class="status" id="status">Temporary Notice</div>
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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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
Jul 10, 6:20 PM MDT	Severe Thunderstorm Warning	UNR	Perkins	70 min
Jul 10, 7:12 PM MDT	Special Weather Statement	UNR	Bennett	33 min
Jul 10, 8:25 PM MDT	Severe Thunderstorm Warning	UNR	Custer, Fall River, Oglala Lakota	29 min
Jul 10, 9:14 PM MDT	Special Weather Statement	UNR	Bennett	31 min
Jul 10, 9:51 PM MDT	Special Weather Statement	UNR	Bennett	24 min
Jul 10, 11:01 PM MDT	Special Weather Statement	UNR	Harding	29 min
Jul 10, 11:36 PM MDT	Special Weather Statement	UNR	Jackson	24 min
Jul 10, 11:46 PM MDT	Severe Thunderstorm Warning	UNR	Perkins	44 min
Jul 11, 4:06 AM MDT	Red Flag Warning	UNR		16 hr

Nearby

Wind Advisories in South Dakota, 2016 Every wind advisory in 2016

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.