Alert archive / South Dakota / Wind Advisories in 2012

Wind Advisory 14, NWS Rapid City, SD

March 3, 201213 counties in South Dakota

NWS Rapid City, SD issued this wind advisory at Mar 3, 2012, 2:17 PM MST for 13 counties in South Dakota. It took effect at Mar 4, 2012, 2:00 AM MST. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued: Mar 3, 2012, 2:17 PM MST (21:17 UTC)
In effect from: Mar 4, 2012, 2:00 AM MST
Expired: Mar 4, 2012, 2:18 PM MST
In force: 12 hr
Issued by: NWS Rapid City, SD

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

The radar

The Rapid City radar (KUDX), 63 km from the middle of the area, began a volume at 21:17 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, 9.3 hours before the alert went out and 298 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: 634 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 19 m²/s²
0-3 km storm-relative helicity: 55 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 Mar 2, 2:26 PM MST, 23 hours 51 minutes earlier.

Area forecast discussion, Mar 2, 2:26 PM MST, 23 hours 51 minutes before

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Nearby

Wind Advisories in South Dakota, 2012 Every wind advisory in 2012

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.