Alert archive / South Dakota / Snow Advisories in 2006

Snow Advisory 4, NWS Aberdeen, SD

March 12, 200623 counties in South Dakota; Big Stone County, Traverse County, Minnesota

NWS Aberdeen, SD issued this snow advisory at Mar 12, 2006, 3:17 AM CST for 23 counties in South Dakota; Big Stone County, Traverse County, Minnesota. It was in force for 17 hr.

The area

The counties it named.

The facts

Issued: Mar 12, 2006, 3:17 AM CST (09:17 UTC)
Expired: Mar 12, 2006, 8:32 PM CST
In force: 17 hr
Issued by: NWS Aberdeen, SD

All 25 counties

Big Stone County, MN, Traverse County, MN, Brown County, SD, Buffalo County, SD, Clark County, SD, Codington County, SD, Day County, SD, Deuel County, SD, Dewey County, SD, Edmunds County, SD, Faulk County, SD, Grant County, SD, Hamlin County, SD, Hand County, SD, Hughes County, SD, Hyde County, SD, Jones County, SD, Lyman County, SD, Marshall County, SD, Potter County, SD, Roberts County, SD, Spink County, SD, Stanley County, SD, Sully County, SD, Walworth County, SD

The radar

The Aberdeen radar (KABR), 59 km from the middle of the area, began a volume at 09:19 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 00:00Z, 9.3 hours before the alert went out and 18 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: 1783 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: -48 m²/s²
0-3 km storm-relative helicity: -50 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 snow advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Aberdeen, SD wrote its last area forecast discussion before this snow advisory went out at Mar 11, 9:40 PM CST, 5 hours 37 minutes earlier.

Area forecast discussion, Mar 11, 9:40 PM CST, 5 hours 37 minutes before

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Hazardous weather outlook, Mar 11, 9:56 PM CST, 5 hours 21 minutes before

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In the hours before

Local storm report, Mar 11, 11:00 PM CST, 4 hours 17 minutes before

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  <main class="wrap">
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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 12, 10:43 AM CST	Winter Storm Warning	ABR	Buffalo, Clark, Codington, Deuel, Grant, Hamlin and 8 more	11 hr

Nearby

Snow Advisories in South Dakota, 2006 Snow Advisories in Minnesota, 2006 Every snow advisory in 2006

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.