Alert archive / South Dakota / Blizzard Watches in 2009

Blizzard Watch 2, NWS Aberdeen, SD

March 9, 200913 counties in South Dakota; Big Stone County, Traverse County, Minnesota

NWS Aberdeen, SD issued this blizzard watch at Mar 9, 2009, 3:41 AM CDT for 13 counties in South Dakota; Big Stone County, Traverse County, Minnesota. It took effect at Mar 10, 2009, 7:00 AM CDT. It was in force for .

The area

The counties it named.

The facts

Issued: Mar 9, 2009, 3:41 AM CDT (08:41 UTC)
In effect from: Mar 10, 2009, 7:00 AM CDT
Expired: Mar 9, 2009, 3:23 PM CDT
In force
Issued by: NWS Aberdeen, SD

Counties Big Stone County, MN, Traverse County, MN, Brown County, SD, Clark County, SD, Codington County, SD, Day County, SD, Deuel County, SD, Edmunds County, SD, Faulk County, SD, Grant County, SD, Hamlin County, SD, Marshall County, SD, McPherson County, SD, Roberts County, SD, Spink County, SD

The radar

The Aberdeen radar (KABR), 62 km from the middle of the area, began a volume at 08:41 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, 8.7 hours before the alert went out and 72 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: 847 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 143 m²/s²
0-3 km storm-relative helicity: 153 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 blizzard watch 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 blizzard watch went out at Mar 8, 9:22 PM CDT, 6 hours 19 minutes earlier.

Area forecast discussion, Mar 8, 9:22 PM CDT, 6 hours 19 minutes before

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Hazardous weather outlook, Mar 8, 4:56 AM CDT, 22 hours 45 minutes before

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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 9, 3:41 AM CDT	Winter Weather Advisory	ABR	Campbell, Corson	12 hr
Mar 9, 11:36 AM CDT	River Flood Warning	ABR	Dewey	11 hr
Mar 9, 3:23 PM CDT	Blizzard Warning	ABR	Day, Grant, Marshall, Roberts	32 hr
Mar 9, 3:23 PM CDT	Winter Storm Warning	ABR	Brown, Campbell, Clark, Codington, Corson, Deuel and 8 more	32 hr
Mar 9, 3:23 PM CDT	Winter Weather Advisory	ABR	Buffalo, Clark, Codington, Deuel, Grant, Hamlin and 7 more	23 hr

Nearby

Blizzard Watches in South Dakota, 2009 Blizzard Watches in Minnesota, 2009 Every blizzard watch in 2009

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.