Alert archive / South Dakota / Severe Thunderstorm Watches in 2004

Severe Thunderstorm Watch 34

March 26, 20047 counties in North Dakota; 13 counties in South Dakota

The Storm Prediction Center issued this severe thunderstorm watch at Mar 26, 2004, 10:30 PM MST for 7 counties in North Dakota; 13 counties in South Dakota. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Mar 26, 2004, 10:30 PM MST (05:30 UTC)
Expired: Mar 27, 2004, 4:00 AM MST
In force: 6 hr
Issued by: the Storm Prediction Center

Counties Adams County, ND, Burleigh County, ND, Emmons County, ND, Grant County, ND, Hettinger County, ND, Morton County, ND, Sioux County, ND, Bennett County, SD, Corson County, SD, Dewey County, SD, Haakon County, SD, Jackson County, SD, Jones County, SD, Meade County, SD, Mellette County, SD, Oglala Lakota County, SD, Pennington County, SD, Perkins County, SD, Stanley County, SD, Ziebach County, SD

The radar

The Rapid City radar (KUDX), 87 km from the middle of the area, began a volume at 05:30 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.

Warnings issued inside it

1 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Mar 26, 10:49 PM MST	Severe Thunderstorm Warning	BIS	Adams	56 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 5.5 hours before the alert went out and 258 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: 1872 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 466 m²/s²
0-3 km storm-relative helicity: 715 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 26, 5:37 PM MST	Mesoscale Discussion	SPC	Adams, Bowman, Golden Valley, Slope	53 min
Mar 26, 6:35 PM MST	Severe Thunderstorm Watch	SPC	Adams, Billings, Bowman, Dunn, Golden Valley, Grant and 6 more	5 hr
Mar 26, 8:35 PM MST	Mesoscale Discussion	SPC	Adams, Billings, Bowman, Dunn, Golden Valley, Grant and 6 more	55 min
Mar 27, 12:18 AM MST	Mesoscale Discussion	SPC	Burleigh, Emmons, Grant, Morton, Sioux	87 min
Mar 27, 11:11 AM MST	Mesoscale Discussion	SPC	Clay, Union	3 hr

Nearby

Severe Thunderstorm Watches in South Dakota, 2004 Severe Thunderstorm Watches in North Dakota, 2004 Every severe thunderstorm watch in 2004

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.