Alert archive / Minnesota / Mesoscale Discussions in 2011
Mesoscale Discussion 1703
The Storm Prediction Center issued this mesoscale discussion at Jul 23, 2011, 1:25 AM CDT for 19 counties in Minnesota; 15 counties in North Dakota; 11 counties in South Dakota. It was in force for 35 min.
The area
The outline as issued.
The facts
- Issued
- Jul 23, 2011, 1:25 AM CDT (06:25 UTC)
- Expired
- Jul 23, 2011, 2:00 AM CDT
- In force
- 35 min
- Issued by
- the Storm Prediction Center
All 45 counties
Becker County, MN, Big Stone County, MN, Clay County, MN, Clearwater County, MN, Douglas County, MN, Grant County, MN, Hubbard County, MN, Lac qui Parle County, MN, Mahnomen County, MN, Norman County, MN, Otter Tail County, MN, Polk County, MN, Pope County, MN, Red Lake County, MN, Stevens County, MN, Swift County, MN, Traverse County, MN, Wadena County, MN, Wilkin County, MN, Barnes County, ND, Cass County, ND, Dickey County, ND, Eddy County, ND, Foster County, ND, Griggs County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Steele County, ND, Stutsman 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, McPherson County, SD, Roberts County, SD, Spink County, SD
The radar
The Aberdeen radar (KABR), 127 km from the middle of the area, began a volume at 06:27 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 00:00Z, 6.4 hours before the alert went out and 177 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.
- Mixed-layer CAPE
- 3084 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 1182 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 135 m²/s²
- 0-3 km storm-relative helicity
- 377 m²/s²
- Significant tornado parameter
- 3.8
- Supercell composite
- 27.3
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 22, 10:11 PM CDT | Mesoscale Discussion | SPC | Becker, Clay, Grant, Norman, Otter Tail, Wilkin | 64 min |
| Jul 22, 10:15 PM CDT | Severe Thunderstorm Watch | SPC | Becker, Clay, Clearwater, Grant, Hubbard, Mahnomen and 6 more | 7 hr |
| Jul 23, 1:41 AM CDT | Severe Thunderstorm Watch | SPC | Becker, Benton, Big Stone, Chippewa, Douglas, Grant and 20 more | 5 hr |
| Jul 23, 4:38 AM CDT | Mesoscale Discussion | SPC | Aitkin, Anoka, Becker, Benton, Big Stone, Carver and 36 more | 67 min |
| Jul 23, 9:37 AM CDT | Mesoscale Discussion | SPC | Fillmore, Houston, Olmsted, Wabasha, Winona | 53 min |
| Jul 23, 10:14 AM CDT | Severe Thunderstorm Watch | SPC | Dodge, Fillmore, Houston, Mower, Olmsted, Wabasha and 1 more | 4 hr |
| Jul 23, 1:10 PM CDT | Mesoscale Discussion | SPC | Houston | 65 min |
| Jul 23, 1:52 PM CDT | Mesoscale Discussion | SPC | Anoka, Benton, Blue Earth, Brown, Carver, Chippewa and 40 more | 83 min |
| Jul 22, 8:56 PM CDT | Mesoscale Discussion | SPC | Adams, Billings, Bowman, Burke, Burleigh, Divide and 21 more | 94 min |
Nearby
Mesoscale Discussions in Minnesota, 2011Mesoscale Discussions in North Dakota, 2011Mesoscale Discussions in South Dakota, 2011Every mesoscale discussion in 2011
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.