Alert archive / North Dakota / Mesoscale Discussions in 2009

Mesoscale Discussion 1306

June 24, 20095 counties in North Dakota; Perkins County, South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 24, 2009, 6:21 PM MDT for 5 counties in North Dakota; Perkins County, South Dakota. It was in force for 84 min.

The area

The outline as issued.

The facts

Issued: Jun 24, 2009, 6:21 PM MDT (00:21 UTC)
Expired: Jun 24, 2009, 7:45 PM MDT
In force: 84 min
Issued by: the Storm Prediction Center

Counties Adams County, ND, Dunn County, ND, Grant County, ND, Hettinger County, ND, Stark County, ND, Perkins County, SD

The radar

The Bismarck radar (KBIS), 132 km from the middle of the area, began a volume at 00:23 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, 0.4 hours before the alert went out and 136 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: 1 J/kg
Mixed-layer CIN: -281 J/kg
Mixed-layer LCL: 1851 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 176 m²/s²
0-3 km storm-relative helicity: 140 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 25, 3:49 PM MDT	Mesoscale Discussion	SPC	Bowman	56 min
Jun 24, 7:49 PM MDT	Mesoscale Discussion	SPC	Beadle, Brookings, Brown, Campbell, Clark, Codington and 22 more	86 min
Jun 24, 9:53 PM MDT	Mesoscale Discussion	SPC	Bon Homme, Charles Mix, Clay, Hutchinson, Lincoln, Turner and 2 more	97 min
Jun 24, 10:53 PM MDT	Severe Thunderstorm Watch	SPC	Aurora, Bon Homme, Charles Mix, Clay, Davison, Douglas and 7 more	5 hr
Jun 25, 1:13 AM MDT	Mesoscale Discussion	SPC	Clay, Union, Yankton	92 min
Jun 25, 3:50 PM MDT	Tornado Watch	SPC	Bennett, Butte, Custer, Fall River, Haakon, Jackson and 3 more	5 hr

Nearby

Mesoscale Discussions in North Dakota, 2009 Mesoscale Discussions in South Dakota, 2009 Every mesoscale discussion in 2009

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.