Alert archive / North Dakota / Mesoscale Discussions in 2016

Mesoscale Discussion 859

June 9, 20167 counties in North Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 9, 2016, 11:29 PM CDT for 7 counties in North Dakota. It was in force for 61 min.

The area

The outline as issued.

The facts

Issued: Jun 9, 2016, 11:29 PM CDT (04:29 UTC)
Expired: Jun 10, 2016, 12:30 AM CDT
In force: 61 min
Issued by: the Storm Prediction Center
Chance of a watch: 60%

Counties Benson County, ND, Cavalier County, ND, Eddy County, ND, Nelson County, ND, Ramsey County, ND, Towner County, ND, Walsh County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 137 km from the middle of the area, began a volume at 04:32 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 241Jun 9, 11:55 PM CDT

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 4.5 hours before the alert went out and 212 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: 828 J/kg
Mixed-layer CIN: -106 J/kg
Mixed-layer LCL: 2621 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 149 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

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 9, 7:05 PM CDT	Mesoscale Discussion	SPC	Adams, Billings, Bowman, Burke, Divide, Dunn and 8 more	85 min
Jun 9, 7:43 PM CDT	Severe Thunderstorm Watch	SPC	Adams, Billings, Bottineau, Bowman, Burke, Divide and 19 more	7 hr
Jun 9, 10:25 PM CDT	Mesoscale Discussion	SPC	Adams, Billings, Bottineau, Bowman, Burke, Dunn and 14 more	95 min
Jun 9, 11:58 PM CDT	Severe Thunderstorm Watch	SPC	Benson, Cavalier, Eddy, Grand Forks, Griggs, Nelson and 6 more	4 hr
Jun 10, 1:14 AM CDT	Mesoscale Discussion	SPC	Cavalier, Eddy, Foster, Griggs, Nelson, Ramsey and 1 more	61 min
Jun 10, 2:59 AM CDT	Mesoscale Discussion	SPC	Grand Forks, Steele, Traill, Walsh	61 min

Nearby

Mesoscale Discussions in North Dakota, 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.