Alert archive / Kansas / Mesoscale Discussions in 2011
Mesoscale Discussion 1895
The Storm Prediction Center issued this mesoscale discussion at Aug 7, 2011, 10:45 PM CDT for 34 counties in Kansas. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 7, 2011, 10:45 PM CDT (03:45 UTC)
- Expired
- Aug 8, 2011, 12:45 AM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 34 counties
Anderson County, KS, Clay County, KS, Cloud County, KS, Coffey County, KS, Dickinson County, KS, Douglas County, KS, Ellsworth County, KS, Franklin County, KS, Geary County, KS, Jackson County, KS, Jefferson County, KS, Jewell County, KS, Johnson County, KS, Leavenworth County, KS, Lincoln County, KS, Lyon County, KS, Marshall County, KS, Miami County, KS, Mitchell County, KS, Morris County, KS, Nemaha County, KS, Osage County, KS, Osborne County, KS, Ottawa County, KS, Pottawatomie County, KS, Republic County, KS, Riley County, KS, Rooks County, KS, Russell County, KS, Saline County, KS, Shawnee County, KS, Smith County, KS, Wabaunsee County, KS, Washington County, KS
The radar
The Topeka radar (KTWX), 61 km from the middle of the area, began a volume at 03:48 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
Topeka, KS (KTOP), launched 00:00Z, 3.8 hours before the alert went out and 112 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
- 120 J/kg
- Mixed-layer CIN
- -474 J/kg
- Mixed-layer LCL
- 2544 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 54 m²/s²
- 0-3 km storm-relative helicity
- 256 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.8
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 |
|---|---|---|---|---|
| Aug 7, 7:13 PM CDT | Mesoscale Discussion | SPC | Barber, Clark, Comanche, Cowley, Edwards, Ford and 11 more | 3 hr |
| Aug 7, 7:49 PM CDT | Severe Thunderstorm Watch | SPC | Jewell, Mitchell, Osborne, Smith | 7 hr |
| Aug 7, 11:08 PM CDT | Severe Thunderstorm Watch | SPC | Allen, Anderson, Brown, Chase, Clay, Cloud and 25 more | 5 hr |
| Aug 8, 12:46 AM CDT | Mesoscale Discussion | SPC | Allen, Anderson, Bourbon, Cherokee, Coffey, Crawford and 7 more | 59 min |
| Aug 8, 1:09 AM CDT | Severe Thunderstorm Watch | SPC | Bourbon, Crawford, Linn, Miami | 3 hr |
| Aug 8, 4:52 PM CDT | Severe Thunderstorm Watch | SPC | Cheyenne, Decatur, Gove, Graham, Greeley, Logan and 7 more | 6 hr |
| Aug 8, 6:27 PM CDT | Mesoscale Discussion | SPC | Cheyenne, Clark, Comanche, Decatur, Edwards, Ellis and 31 more | 2 hr |
| Aug 8, 6:44 PM CDT | Severe Thunderstorm Watch | SPC | Clark, Comanche, Edwards, Ellis, Finney, Ford and 18 more | 4 hr |
Nearby
Mesoscale Discussions in Kansas, 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.