Alert archive / Minnesota / Mesoscale Discussions in 2003

Mesoscale Discussion 1597

July 3, 20039 counties in Minnesota; 4 counties in North Dakota

The Storm Prediction Center issued this mesoscale discussion at Jul 3, 2003, 10:22 PM CDT for 9 counties in Minnesota; 4 counties in North Dakota. It was in force for 23 min.

The area

The outline as issued.

The facts

Issued: Jul 3, 2003, 10:22 PM CDT (03:22 UTC)
Expired: Jul 3, 2003, 10:45 PM CDT
In force: 23 min
Issued by: the Storm Prediction Center

Counties Becker County, MN, Clay County, MN, Douglas County, MN, Grant County, MN, Hubbard County, MN, Otter Tail County, MN, Todd County, MN, Wadena County, MN, Wilkin County, MN, Cass County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 120 km from the middle of the area, began a volume at 03:23 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 watches that followed

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

Severe Thunderstorm Watch 630Jul 3, 10:40 PM CDT

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 3.4 hours before the alert went out and 262 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: 1927 J/kg
Mixed-layer CIN: -22 J/kg
Mixed-layer LCL: 1633 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 33 m²/s²
0-3 km storm-relative helicity: 201 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.8

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 3, 8:11 PM CDT	Mesoscale Discussion	SPC	Jackson, Nobles, Rock	94 min
Jul 3, 9:40 PM CDT	Severe Thunderstorm Watch	SPC	Big Stone, Blue Earth, Brown, Chippewa, Cottonwood, Douglas and 23 more	6 hr
Jul 3, 10:40 PM CDT	Severe Thunderstorm Watch	SPC	Aitkin, Becker, Carlton, Cass, Clay, Crow Wing and 14 more	5 hr
Jul 3, 11:23 PM CDT	Mesoscale Discussion	SPC	Aitkin, Anoka, Becker, Benton, Carlton, Carver and 44 more	97 min
Jul 4, 12:25 AM CDT	Mesoscale Discussion	SPC	Traverse	2 hr
Jul 4, 12:42 AM CDT	Mesoscale Discussion	SPC	Anoka, Benton, Blue Earth, Brown, Carver, Chippewa and 38 more	63 min
Jul 4, 1:15 AM CDT	Severe Thunderstorm Watch	SPC	Anoka, Blue Earth, Carver, Chisago, Dakota, Dodge and 23 more	6 hr
Jul 4, 3:27 AM CDT	Mesoscale Discussion	SPC	Fillmore, Goodhue, Houston, Olmsted, Ramsey, Wabasha and 2 more	93 min
Jul 3, 7:55 PM CDT	Severe Thunderstorm Watch	SPC	Barnes, Burleigh, Dickey, Eddy, Emmons, Foster and 13 more	4 hr

Nearby

Mesoscale Discussions in Minnesota, 2003 Mesoscale Discussions in North Dakota, 2003 Every mesoscale discussion in 2003

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.