Alert archive / Kansas / Mesoscale Discussions in 2011
Mesoscale Discussion 328
The Storm Prediction Center issued this mesoscale discussion at Apr 3, 2011, 5:59 PM CDT for 25 counties in Kansas; 4 counties in Missouri. It was in force for 61 min.
The area
The outline as issued.
The facts
- Issued
- Apr 3, 2011, 5:59 PM CDT (22:59 UTC)
- Expired
- Apr 3, 2011, 7:00 PM CDT
- In force
- 61 min
- Issued by
- the Storm Prediction Center
All 29 counties
Atchison County, KS, Chase County, KS, Coffey County, KS, Dickinson County, KS, Doniphan County, KS, Douglas County, KS, Franklin County, KS, Geary County, KS, Harvey County, KS, Jackson County, KS, Jefferson County, KS, Johnson County, KS, Leavenworth County, KS, Lyon County, KS, Marion County, KS, McPherson County, KS, Morris County, KS, Osage County, KS, Pottawatomie County, KS, Reno County, KS, Riley County, KS, Saline County, KS, Shawnee County, KS, Wabaunsee County, KS, Wyandotte County, KS, Buchanan County, MO, Clay County, MO, Clinton County, MO, Platte County, MO
The radar
The Topeka radar (KTWX), 33 km from the middle of the area, began a volume at 22:59 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 12:00Z, 11.0 hours before the alert went out and 78 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
- 146 J/kg
- Mixed-layer CIN
- -825 J/kg
- Mixed-layer LCL
- 753 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 805 m²/s²
- 0-3 km storm-relative helicity
- 897 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Apr 3, 6:21 PM CDT | Severe Thunderstorm Watch | SPC | Anderson, Atchison, Brown, Chase, Coffey, Dickinson and 20 more | 6 hr |
| Apr 3, 4:49 PM CDT | Mesoscale Discussion | SPC | Mercer, Putnam, Schuyler, Scotland | 56 min |
| Apr 3, 5:57 PM CDT | Tornado Watch | SPC | Clark, Scotland | 6 hr |
Nearby
Mesoscale Discussions in Kansas, 2011Mesoscale Discussions in Missouri, 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.