Alert archive / Minnesota / Mesoscale Discussions in 2005

Mesoscale Discussion 2145

September 5, 200512 counties in Minnesota; 10 counties in North Dakota; 10 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Sep 5, 2005, 3:19 PM CDT for 12 counties in Minnesota; 10 counties in North Dakota; 10 counties in South Dakota. It was in force for 86 min.

The area

The outline as issued.

The facts

Issued: Sep 5, 2005, 3:19 PM CDT (20:19 UTC)
Expired: Sep 5, 2005, 4:45 PM CDT
In force: 86 min
Issued by: the Storm Prediction Center

All 32 counties

Becker County, MN, Clay County, MN, Clearwater County, MN, Mahnomen County, MN, Marshall County, MN, Norman County, MN, Otter Tail County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Traverse County, MN, Wilkin County, MN, Barnes County, ND, Cass County, ND, Dickey County, ND, Grand Forks County, ND, LaMoure County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Steele County, ND, Traill County, ND, Brown County, SD, Clark County, SD, Codington County, SD, Day County, SD, Edmunds County, SD, Faulk County, SD, Grant County, SD, Marshall County, SD, Roberts County, SD, Spink County, SD

The radar

The Fargo/Grand Forks radar (KMVX), 86 km from the middle of the area, began a volume at 20:20 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.

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 8.3 hours before the alert went out and 222 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: 1344 J/kg
Mixed-layer CIN: -347 J/kg
Mixed-layer LCL: 1364 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 81 m²/s²
0-3 km storm-relative helicity: 66 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 4, 10:15 PM CDT	Severe Thunderstorm Watch	SPC	Clay, Kittson, Marshall, Norman, Pennington, Polk and 4 more	6 hr
Sep 4, 11:53 PM CDT	Mesoscale Discussion	SPC	Clay, Kittson, Marshall, Norman, Pennington, Polk and 4 more	97 min
Sep 5, 2:31 AM CDT	Mesoscale Discussion	SPC	Clay, Kittson, Marshall, Norman, Pennington, Polk and 4 more	119 min
Sep 5, 3:45 PM CDT	Severe Thunderstorm Watch	SPC	Becker, Beltrami, Clay, Clearwater, Grant, Kittson and 10 more	8 hr
Sep 5, 5:05 PM CDT	Severe Thunderstorm Watch	SPC	Big Stone, Lac qui Parle, Lincoln, Pipestone, Stevens, Traverse	7 hr
Sep 4, 8:31 PM CDT	Mesoscale Discussion	SPC	Barnes, Benson, Cass, Cavalier, Dickey, Eddy and 17 more	89 min

Nearby

Mesoscale Discussions in Minnesota, 2005 Mesoscale Discussions in North Dakota, 2005 Mesoscale Discussions in South Dakota, 2005 Every mesoscale discussion in 2005

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.