Alert archive / Kansas / Mesoscale Discussions in 2011
Mesoscale Discussion 150
The Storm Prediction Center issued this mesoscale discussion at Feb 27, 2011, 3:24 PM CST for 26 counties in Kansas; 16 counties in Missouri. It was in force for 66 min.
The area
The outline as issued.
The facts
- Issued
- Feb 27, 2011, 3:24 PM CST (21:24 UTC)
- Expired
- Feb 27, 2011, 4:30 PM CST
- In force
- 66 min
- Issued by
- the Storm Prediction Center
All 42 counties
Anderson County, KS, Butler County, KS, Chase County, KS, Coffey County, KS, Douglas County, KS, Franklin County, KS, Greenwood County, KS, Harper County, KS, Harvey County, KS, Johnson County, KS, Kingman County, KS, Leavenworth County, KS, Linn County, KS, Lyon County, KS, Marion County, KS, McPherson County, KS, Miami County, KS, Morris County, KS, Osage County, KS, Reno County, KS, Rice County, KS, Sedgwick County, KS, Shawnee County, KS, Wabaunsee County, KS, Woodson County, KS, Wyandotte County, KS, Bates County, MO, Carroll County, MO, Cass County, MO, Chariton County, MO, Clay County, MO, Cooper County, MO, Howard County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO, Linn County, MO, Livingston County, MO, Pettis County, MO, Platte County, MO, Ray County, MO, Saline County, MO
The radar
The Topeka radar (KTWX), 58 km from the middle of the area, began a volume at 21:25 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
Topeka, KS (KTOP), launched 12:00Z, 9.4 hours before the alert went out and 68 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 382 m above ground
- 0-6 km bulk shear
- 70 kt
- 0-1 km storm-relative helicity
- 505 m²/s²
- 0-3 km storm-relative helicity
- 498 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
028 ACUS11 KWNS 272125 SWOMCD SPC MCD 272124 MOZ000-KSZ000-272230- MESOSCALE DISCUSSION 0150 NWS STORM PREDICTION CENTER NORMAN OK 0324 PM CST SUN FEB 27 2011 AREAS AFFECTED...SRN/ERN KS...WCNTRL MO CONCERNING...SEVERE THUNDERSTORM WATCH 20... VALID 272124Z - 272230Z THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 20 CONTINUES. A GRADUALLY EXPANDING ELEVATED MCS HAS EVOLVED OVER CNTRL PORTIONS OF WW20. THIS ACTIVITY IS SPREADING/DEVELOPING NEWD ACROSS ECNTRL KS TOWARD WCNTRL MO AT ROUGHLY 50-60KT. TRAILING CONVECTION IS ALSO DEVELOPING SWWD INTO WOODS COUNTY OK WHICH COULD SPREAD BACK INTO EXTREME SRN PORTIONS OF THE WATCH OVER THE NEXT FEW HOURS. THIS SRN STORM IS LIKELY NEAR-SFC BASED AND GIVEN IT/S CHARACTER COULD BECOME SUPERCELLULAR AS IT TRAVELS VERY NEAR THE SFC WIND SHIFT. LARGE HAIL REMAINS THE PRIMARY CONCERN FOR ELEVATED ACTIVITY...WHILE ISOLATED TORNADOES MAY ACCOMPANY SUPERCELLS NEAR THE FRONTAL ZONE. ..DARROW.. 02/27/2011 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...SGF...EAX...TOP...ICT...DDC... LAT...LON 38309838 40079262 38789261 37019838 38309838
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 27, 12:46 PM CST | Mesoscale Discussion | SPC | Anderson, Butler, Chase, Coffey, Douglas, Franklin and 20 more | 59 min |
| Feb 27, 1:12 PM CST | Severe Thunderstorm Watch | SPC | Allen, Anderson, Butler, Chase, Coffey, Douglas and 22 more | 9 hr |
| Feb 27, 2:12 PM CST | Mesoscale Discussion | SPC | Bourbon, Chautauqua, Cherokee, Cowley, Crawford, Labette and 3 more | 93 min |
| Feb 27, 2:46 PM CST | Tornado Watch | SPC | Chautauqua, Cowley, Elk, Labette, Montgomery, Neosho and 2 more | 8 hr |
| Feb 27, 5:49 PM CST | Mesoscale Discussion | SPC | Chautauqua, Cowley, Elk, Montgomery, Wilson | 56 min |
| Feb 27, 12:44 PM CST | Mesoscale Discussion | SPC | Pemiscot | 91 min |
| Feb 27, 4:57 PM CST | Mesoscale Discussion | SPC | Barry, Bollinger, Butler, Cape Girardeau, Carter, Christian and 29 more | 2 hr |
| Feb 27, 5:10 PM CST | Mesoscale Discussion | SPC | Audrain, Boone, Macon, Marion, Monroe, Pike and 3 more | 35 min |
| Feb 27, 5:33 PM CST | Severe Thunderstorm Watch | SPC | Audrain, Boone, Knox, Lewis, Marion, Monroe and 3 more | 4 hr |
| Feb 27, 5:50 PM CST | Mesoscale Discussion | SPC | Harrison, Mercer, Putnam | 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.