Alert archive / North Dakota / Mesoscale Discussions in 2004

Mesoscale Discussion 1682

July 15, 20048 counties in North Dakota

The Storm Prediction Center issued this mesoscale discussion at Jul 15, 2004, 2:37 AM CDT for 8 counties in North Dakota. It was in force for 53 min.

The area

The outline as issued.

The facts

Issued: Jul 15, 2004, 2:37 AM CDT (07:37 UTC)
Expired: Jul 15, 2004, 3:30 AM CDT
In force: 53 min
Issued by: the Storm Prediction Center

Counties Burleigh County, ND, Emmons County, ND, Grant County, ND, Kidder County, ND, Morton County, ND, Sheridan County, ND, Sioux County, ND, Wells County, ND

The radar

The Bismarck radar (KBIS), 20 km from the middle of the area, began a volume at 07:37 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, 7.6 hours before the alert went out and 17 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: 577 J/kg
Mixed-layer CIN: -148 J/kg
Mixed-layer LCL: 2040 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 57 m²/s²
0-3 km storm-relative helicity: 120 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.7

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
Jul 14, 9:39 PM CDT	Mesoscale Discussion	SPC	Adams, Billings, Bowman, Burke, Divide, Dunn and 15 more	96 min
Jul 14, 11:25 PM CDT	Severe Thunderstorm Watch	SPC	Adams, Benson, Billings, Bottineau, Burke, Burleigh and 30 more	6 hr
Jul 15, 12:28 PM CDT	Mesoscale Discussion	SPC	Pembina	2 hr
Jul 15, 5:41 PM CDT	Mesoscale Discussion	SPC	Sargent	94 min
Jul 15, 6:00 PM CDT	Severe Thunderstorm Watch	SPC	Barnes, Cass, Ransom, Richland, Sargent	5 hr

Nearby

Mesoscale Discussions in North Dakota, 2004 Every mesoscale discussion in 2004

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.