Alert archive / Minnesota / Mesoscale Discussions in 2003

Mesoscale Discussion 2377

September 17, 200311 counties in Minnesota; 6 counties in North Dakota

The Storm Prediction Center issued this mesoscale discussion at Sep 17, 2003, 12:15 AM CDT for 11 counties in Minnesota; 6 counties in North Dakota. It was in force for 105 min.

The area

The outline as issued.

The facts

Issued: Sep 17, 2003, 12:15 AM CDT (05:15 UTC)
Expired: Sep 17, 2003, 2:00 AM CDT
In force: 105 min
Issued by: the Storm Prediction Center

Counties Becker County, MN, Beltrami County, MN, Clay County, MN, Clearwater County, MN, Koochiching County, MN, Mahnomen County, MN, Marshall County, MN, Norman County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Cass County, ND, LaMoure County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Traill County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 99 km from the middle of the area, began a volume at 05:15 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

International Fa, MN (KINL), launched 00:00Z, 5.3 hours before the alert went out and 243 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2405 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 42 m²/s²
0-3 km storm-relative helicity: 123 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
Sep 17, 12:49 PM CDT	Mesoscale Discussion	SPC	Becker, Beltrami, Big Stone, Chippewa, Clay, Clearwater and 21 more	86 min
Sep 17, 1:10 PM CDT	Severe Thunderstorm Watch	SPC	Becker, Beltrami, Clay, Clearwater, Douglas, Grant and 12 more	6 hr
Sep 17, 3:50 PM CDT	Mesoscale Discussion	SPC	Becker, Beltrami, Big Stone, Chippewa, Clay, Clearwater and 24 more	55 min
Sep 17, 6:00 PM CDT	Mesoscale Discussion	SPC	Becker, Beltrami, Clay, Clearwater, Hubbard, Kittson and 10 more	60 min

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.