Alert archive / North Dakota / Mesoscale Discussions in 2020

Mesoscale Discussion 923

June 16, 202014 counties in North Dakota; 8 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 16, 2020, 10:27 PM CDT for 14 counties in North Dakota; 8 counties in South Dakota. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued: Jun 16, 2020, 10:27 PM CDT (03:27 UTC)
Expired: Jun 17, 2020, 1:00 AM CDT
In force: 3 hr
Issued by: the Storm Prediction Center
Concerning: Severe potential...watch unlikely
Chance of a watch: 20%

All 22 counties

Burleigh County, ND, Emmons County, ND, Grant County, ND, Kidder County, ND, McHenry County, ND, McLean County, ND, Mercer County, ND, Morton County, ND, Oliver County, ND, Pierce County, ND, Sheridan County, ND, Sioux County, ND, Ward County, ND, Wells County, ND, Campbell County, SD, Corson County, SD, Dewey County, SD, Haakon County, SD, Meade County, SD, Perkins County, SD, Stanley County, SD, Ziebach County, SD

The radar

The Bismarck radar (KBIS), 77 km from the middle of the area, began a volume at 03:27 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, 3.5 hours before the alert went out and 80 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: 1631 J/kg
Mixed-layer CIN: -129 J/kg
Mixed-layer LCL: 2365 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 165 m²/s²
0-3 km storm-relative helicity: 200 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 7.4

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
Jun 17, 2:44 PM CDT	Mesoscale Discussion	SPC	Barnes, Cass, Cavalier, Dickey, Eddy, Foster and 14 more	2 hr
Jun 17, 5:21 PM CDT	Severe Thunderstorm Watch	SPC	Barnes, Benson, Cass, Cavalier, Dickey, Eddy and 16 more	7 hr
Jun 17, 5:26 PM CDT	Mesoscale Discussion	SPC	Beadle, Brown, Brule, Buffalo, Clark, Day and 18 more	2 hr
Jun 17, 6:29 PM CDT	Severe Thunderstorm Watch	SPC	Beadle, Brown, Brule, Buffalo, Clark, Day and 17 more	7 hr

Nearby

Mesoscale Discussions in North Dakota, 2020 Mesoscale Discussions in South 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.