Alert archive / North Dakota / Mesoscale Discussions in 2020

Mesoscale Discussion 1106

July 5, 202017 counties in North Dakota

The Storm Prediction Center issued this mesoscale discussion at Jul 5, 2020, 12:25 AM MDT for 17 counties in North Dakota. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Jul 5, 2020, 12:25 AM MDT (06:25 UTC)
Expired: Jul 5, 2020, 2:30 AM MDT
In force: 2 hr
Issued by: the Storm Prediction Center
Concerning: Severe thunderstorm watch 330

Counties Adams County, ND, Burke County, ND, Divide County, ND, Dunn County, ND, Grant County, ND, Hettinger County, ND, McKenzie County, ND, McLean County, ND, Mercer County, ND, Morton County, ND, Mountrail County, ND, Oliver County, ND, Renville County, ND, Sioux County, ND, Stark County, ND, Ward County, ND, Williams County, ND

The radar

The Bismarck radar (KBIS), 124 km from the middle of the area, began a volume at 06:26 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 00:00Z, 6.4 hours before the alert went out and 128 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: 902 J/kg
Mixed-layer CIN: -93 J/kg
Mixed-layer LCL: 1890 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: -17 m²/s²
0-3 km storm-relative helicity: 91 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

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 4, 8:46 PM MDT	Mesoscale Discussion	SPC	Billings, Bowman, Divide, Dunn, Golden Valley, Hettinger and 4 more	119 min
Jul 4, 9:42 PM MDT	Severe Thunderstorm Watch	SPC	Adams, Billings, Bowman, Burke, Divide, Dunn and 9 more	5 hr
Jul 5, 2:32 PM MDT	Mesoscale Discussion	SPC	Dickey, LaMoure, McIntosh, Ransom, Sargent	118 min
Jul 5, 3:41 PM MDT	Severe Thunderstorm Watch	SPC	Adams, Barnes, Bowman, Burleigh, Cass, Dickey and 13 more	6 hr
Jul 5, 5:29 PM MDT	Mesoscale Discussion	SPC	Adams, Dickey, Emmons, Grant, Hettinger, LaMoure and 6 more	2 hr

Nearby

Mesoscale Discussions in North Dakota, 2020 Every mesoscale discussion in 2020

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.