Alert archive / South Dakota / Blizzard Watches in 2007

Blizzard Watch 1, NWS Aberdeen, SD

February 28, 200726 counties in South Dakota; Big Stone County, Traverse County, Minnesota

NWS Aberdeen, SD issued this blizzard watch at Feb 28, 2007, 3:34 PM CST for 26 counties in South Dakota; Big Stone County, Traverse County, Minnesota. It took effect at Mar 1, 2007, 12:00 PM CST. It was in force for .

The area

The counties it named.

The facts

Issued: Feb 28, 2007, 3:34 PM CST (21:34 UTC)
In effect from: Mar 1, 2007, 12:00 PM CST
Expired: Mar 1, 2007, 4:22 AM CST
In force
Issued by: NWS Aberdeen, SD

All 28 counties

Big Stone County, MN, Traverse County, MN, Brown County, SD, Buffalo County, SD, Campbell County, SD, Clark County, SD, Codington County, SD, Corson 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, McPherson 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), 56 km from the middle of the area, began a volume at 21:38 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, 9.6 hours before the alert went out and 243 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: 557 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 296 m²/s²
0-3 km storm-relative helicity: 504 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 Feb 28, 3:22 PM CST, 12 minutes earlier.

Area forecast discussion, Feb 28, 3:22 PM CST, 12 minutes before

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Hazardous weather outlook, Feb 28, 4:09 AM CST, 11 hours 25 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ABERDEEN SD
409 AM CST WED FEB 28 2007

MNZ039-046-SDZ006>008-011-018>023-011015-
TRAVERSE-BIG STONE-BROWN-MARSHALL-ROBERTS-DAY-SPINK-CLARK-
CODINGTON-GRANT-HAMLIN-DEUEL-
409 AM CST WED FEB 28 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL
MINNESOTA AND NORTHEAST SOUTH DAKOTA.

.DAY ONE...TODAY AND TONIGHT
A WINTER STORM WARNING IS IN EFFECT THOUGH MIDNIGHT TONIGHT. SNOW
AMOUNTS FROM 6 TO 8 INCHES ARE POSSIBLE ALONG WITH WINDS FROM 20
TO 25 MPH.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

ANOTHER WINTER STORM IS POSSIBLE ON FRIDAY. AREAS EAST OF BROWN
AND SPINK COUNTY ARE MOST LIKELY TO BE AFFECTED. HEAVY SNOW AND
VERY STRONG NORTHWEST WINDS ARE POSSIBLE.

.SPOTTER INFORMATION STATEMENT...
SNOWFALL REPORTS ARE REQUESTED LATER TODAY.

SDZ003>005-009-010-015>017-033>037-045-048-051-011015-
CORSON-CAMPBELL-MCPHERSON-WALWORTH-EDMUNDS-DEWEY-POTTER-FAULK-
STANLEY-SULLY-HUGHES-HYDE-HAND-JONES-LYMAN-BUFFALO-
409 AM CST WED FEB 28 2007 /309 AM MST WED FEB 28 2007/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL SOUTH
DAKOTA AND NORTH CENTRAL SOUTH DAKOTA.

.DAY ONE...TODAY AND TONIGHT

A STRONG LOW PRESSURE WILL SPREAD SNOW OVER THE AREA TODAY. SNOW
AMOUNTS FROM 3 TO 6 INCHES AREA POSSIBLE.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

LIGHT SNOW IS POSSIBLE ON FRIDAY ALONG WITH STRONG NORTHWEST WINDS.

.SPOTTER INFORMATION STATEMENT...
SNOWFALL REPORTS ARE REQUESTED TODAY.

HARDING

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 28, 3:54 AM CST	Winter Storm Watch	ABR	Clark, Codington, Day, Deuel, Grant, Hamlin and 2 more	12 hr

Nearby

Blizzard Watches in South Dakota, 2007 Blizzard Watches in Minnesota, 2007 Every blizzard watch in 2007

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.