Alert archive / North Dakota / Mesoscale Discussions in 2020

Mesoscale Discussion 873

June 7, 202012 counties in Montana; 15 counties in North Dakota; Harding County, South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 7, 2020, 2:59 PM MDT for 12 counties in Montana; 15 counties in North Dakota; Harding County, South Dakota. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Jun 7, 2020, 2:59 PM MDT (20:59 UTC)
Expired
Jun 7, 2020, 5:00 PM MDT
In force
2 hr
Issued by
the Storm Prediction Center
Concerning
Severe potential...watch possible
Chance of a watch
40%
All 28 counties

Carter County, MT, Custer County, MT, Dawson County, MT, Fallon County, MT, Garfield County, MT, McCone County, MT, Prairie County, MT, Richland County, MT, Roosevelt County, MT, Rosebud County, MT, Sheridan County, MT, Wibaux County, MT, Billings County, ND, Bowman County, ND, Burke County, ND, Divide County, ND, Dunn County, ND, Golden Valley County, ND, Hettinger County, ND, McKenzie County, ND, Mercer County, ND, Mountrail County, ND, Renville County, ND, Slope County, ND, Stark County, ND, Ward County, ND, Williams County, ND, Harding County, SD

The radar

The Glasgow radar (KGGW), 203 km from the middle of the area, began a volume at 21:05 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, 9.0 hours before the alert went out and 287 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-pSkew-T log-p diagram, Bismarck Municip, ND at 12:00Z on 2020-06-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Bismarck Municip, ND at 12:00Z on 2020-06-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 212 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1944 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
212 m²/s²
0-3 km storm-relative helicity
340 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.

IssuedProductOfficeCountiesLasted
Jun 6, 7:29 PM MDTMesoscale DiscussionSPCBenson, Billings, Burke, Burleigh, Dickey, Dunn and 25 more91 min
Jun 6, 8:11 PM MDTSevere Thunderstorm WatchSPCBarnes, Benson, Bottineau, Burke, Burleigh, Dickey and 31 more6 hr
Jun 6, 10:34 PM MDTMesoscale DiscussionSPCBurleigh, Dickey, Emmons, Kidder, Logan, McIntosh and 3 more86 min
Jun 7, 1:18 AM MDTMesoscale DiscussionSPCGrand Forks, Pembina, Walsh117 min
Jun 7, 12:39 PM MDTMesoscale DiscussionSPCBarnes, Cass, Grand Forks, Pembina, Ransom, Richland and 4 more3 hr
Jun 7, 2:06 PM MDTTornado WatchSPCBarnes, Benson, Cass, Cavalier, Dickey, Eddy and 19 more7 hr
Jun 7, 4:55 PM MDTMesoscale DiscussionSPCBarnes, Cass, Dickey, Eddy, Foster, Grand Forks and 11 more2 hr
Jun 7, 1:04 PM MDTMesoscale DiscussionSPCAurora, Beadle, Brown, Brule, Buffalo, Campbell and 25 more116 min
Jun 7, 2:31 PM MDTSevere Thunderstorm WatchSPCBeadle, Bennett, Brown, Brule, Buffalo, Campbell and 21 more8 hr
Jun 7, 5:00 PM MDTMesoscale DiscussionSPCBennett, Brown, Buffalo, Campbell, Edmunds, Faulk and 15 more90 min

Nearby

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