Alert archive / South Dakota / Wind Advisories in 2014

Wind Advisory 11, NWS Rapid City, SD

February 19, 201415 counties in South Dakota

NWS Rapid City, SD issued this wind advisory at Feb 19, 2014, 2:23 PM MST for 15 counties in South Dakota. It took effect at Feb 20, 2014, 5:00 AM MST. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued: Feb 19, 2014, 2:23 PM MST (21:23 UTC)
In effect from: Feb 20, 2014, 5:00 AM MST
Expired: Feb 20, 2014, 5:00 PM MST
In force: 12 hr
Issued by: NWS Rapid City, SD

Counties Bennett County, SD, Butte County, SD, Custer County, SD, Haakon County, SD, Harding County, SD, Jackson County, SD, Lawrence County, SD, Meade County, SD, Mellette County, SD, Oglala Lakota County, SD, Pennington County, SD, Perkins County, SD, Todd County, SD, Tripp County, SD, Ziebach County, SD

The radar

The Rapid City radar (KUDX), 52 km from the middle of the area, began a volume at 21:24 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, 9.4 hours before the alert went out and 311 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: 1543 m above ground
0-6 km bulk shear: 70 kt
0-1 km storm-relative helicity: 76 m²/s²
0-3 km storm-relative helicity: 125 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 Feb 19, 10:52 AM MST, 3 hours 31 minutes earlier.

Area forecast discussion, Feb 19, 10:52 AM MST, 3 hours 31 minutes before

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Hazardous weather outlook, Feb 19, 5:49 AM MST, 8 hours 34 minutes before

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In the hours before

Special weather statement, Feb 19, 2:01 PM MST, 22 minutes before

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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.