Alert archive / North Dakota / Mesoscale Discussions in 2016

Mesoscale Discussion 956

June 16, 2016Fallon County, Montana; 8 counties in North Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 16, 2016, 11:36 PM MDT for Fallon County, Montana; 8 counties in North Dakota. It was in force for 84 min.

The area

The outline as issued.

The facts

Issued: Jun 16, 2016, 11:36 PM MDT (05:36 UTC)
Expired: Jun 17, 2016, 1:00 AM MDT
In force: 84 min
Issued by: the Storm Prediction Center
Chance of a watch: 20%

Counties Fallon County, MT, Billings County, ND, Bowman County, ND, Dunn County, ND, Golden Valley County, ND, Hettinger County, ND, Mercer County, ND, Slope County, ND, Stark County, ND

The radar

The Bismarck radar (KBIS), 204 km from the middle of the area, began a volume at 05:38 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 263Jun 17, 12:25 AM MDT

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 5.6 hours before the alert went out and 209 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: 2745 J/kg
Mixed-layer CIN: -53 J/kg
Mixed-layer LCL: 1725 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 25 m²/s²
0-3 km storm-relative helicity: 47 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 2.1

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, 12:26 AM MDT	Severe Thunderstorm Watch	SPC	Adams, Billings, Bowman, Burleigh, Dunn, Emmons and 17 more	6 hr
Jun 17, 2:23 AM MDT	Mesoscale Discussion	SPC	Barnes, Burleigh, Eddy, Foster, Griggs, Kidder and 7 more	97 min
Jun 17, 4:44 AM MDT	Mesoscale Discussion	SPC	Barnes, Eddy, Foster, Grand Forks, Griggs, Nelson and 3 more	61 min
Jun 17, 6:20 AM MDT	Severe Thunderstorm Watch	SPC	Grand Forks, Steele, Traill, Walsh	4 hr
Jun 17, 6:32 AM MDT	Mesoscale Discussion	SPC	Grand Forks, Pembina, Steele, Traill, Walsh	28 min

Nearby

Mesoscale Discussions in North Dakota, 2016 Mesoscale Discussions in Montana, 2016 Every mesoscale discussion in 2016

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.