Alert archive / North Dakota / Mesoscale Discussions in 2019

Mesoscale Discussion 1349

July 2, 20196 counties in North Dakota; 4 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jul 2, 2019, 4:37 PM MDT for 6 counties in North Dakota; 4 counties in South Dakota. It was in force for 83 min.

The area

The outline as issued.

The facts

Issued: Jul 2, 2019, 4:37 PM MDT (22:37 UTC)
Expired: Jul 2, 2019, 6:00 PM MDT
In force: 83 min
Issued by: the Storm Prediction Center

Counties Adams County, ND, Bowman County, ND, Grant County, ND, Hettinger County, ND, Morton County, ND, Sioux County, ND, Butte County, SD, Harding County, SD, Lawrence County, SD, Perkins County, SD

The radar

The Rapid City radar (KUDX), 129 km from the middle of the area, began a volume at 22:41 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

Rapid City, SD (KUNR), launched 12:00Z, 10.6 hours before the alert went out and 135 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: 2671 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: -18 m²/s²
0-3 km storm-relative helicity: -3 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 1, 6:18 PM MDT	Severe Thunderstorm Watch	SPC	Billings, Divide, Golden Valley, McKenzie, Williams	6 hr
Jul 1, 7:45 PM MDT	Mesoscale Discussion	SPC	Divide, Williams	90 min
Jul 1, 9:30 PM MDT	Mesoscale Discussion	SPC	Bottineau, Burke, Mountrail, Renville, Ward	90 min
Jul 2, 12:44 PM MDT	Mesoscale Discussion	SPC	Bowman	2 hr
Jul 2, 2:11 PM MDT	Mesoscale Discussion	SPC	Adams, Barnes, Bowman, Burleigh, Emmons, Foster and 12 more	94 min
Jul 2, 2:38 PM MDT	Severe Thunderstorm Watch	SPC	Adams, Billings, Bowman, Burleigh, Dickey, Dunn and 14 more	10 hr
Jul 2, 1:33 PM MDT	Severe Thunderstorm Watch	SPC	Butte, Harding, Lawrence, Meade, Perkins, Ziebach	7 hr

Nearby

Mesoscale Discussions in North Dakota, 2019 Mesoscale Discussions in South Dakota, 2019 Every mesoscale discussion in 2019

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.