Alert archive / Kansas / Mesoscale Discussions in 2011
Mesoscale Discussion 148
The Storm Prediction Center issued this mesoscale discussion at Feb 27, 2011, 12:46 PM CST for 26 counties in Kansas; 13 counties in Missouri. It was in force for 59 min.
The area
The outline as issued.
The facts
- Issued
- Feb 27, 2011, 12:46 PM CST (18:46 UTC)
- Expired
- Feb 27, 2011, 1:45 PM CST
- In force
- 59 min
- Issued by
- the Storm Prediction Center
All 39 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, Jefferson 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, Sedgwick County, KS, Shawnee County, KS, Wabaunsee County, KS, Woodson County, KS, Wyandotte County, KS, Caldwell County, MO, Carroll County, MO, Cass County, MO, Chariton County, MO, Clay County, MO, Clinton County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO, Pettis County, MO, Platte County, MO, Ray County, MO, Saline County, MO
The radar
The Topeka radar (KTWX), 68 km from the middle of the area, began a volume at 18:48 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 12:00Z, 6.8 hours before the alert went out and 59 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.
131
ACUS11 KWNS 271847
SWOMCD
SPC MCD 271846
MOZ000-KSZ000-271945-
MESOSCALE DISCUSSION 0148
NWS STORM PREDICTION CENTER NORMAN OK
1246 PM CST SUN FEB 27 2011
AREAS AFFECTED...SRN/ERN KS...WCNTRL MO
CONCERNING...SEVERE POTENTIAL...WATCH LIKELY
VALID 271846Z - 271945Z
ELEVATED CONVECTION IS BEGINNING TO DEEPEN ACROSS SCNTRL KS JUST
NORTH OF A WELL ESTABLISHED SFC FRONT. THIS ACTIVITY IS LIKELY
ROOTED NEAR 850MB WHERE MUCAPE COULD APPROACH...OR EVEN EXCEED 1500
J/KG. LATEST SHORT RANGE MODEL GUIDANCE SUGGEST SFC LOW WILL
TRANSLATE ALONG THIS BOUNDARY ALONG THE OK/KS BORDER BEFORE SHIFTING
INTO SWRN MO LATE THIS EVENING. STRENGTHENING LOW LEVEL WARM
ADVECTION ALONG THE COOL SIDE OF THE FRONTAL ZONE WILL ENSURE UPWARD
EXPANDING/INTENSIFYING ELEVATED THUNDERSTORM CLUSTERS AND ISOLATED
SUPERCELLS. FORECAST SOUNDINGS STRONGLY SUGGEST LARGE HAIL WILL
ACCOMPANY THE STRONGEST UPDRAFTS. CURRENT THINKING IS ANY
MEANINGFUL THREAT FOR TORNADOES WILL REMAIN ALONG/SOUTH OF WIND
SHIFT AND THIS WILL BE ADDRESSED WITH A TORNADO WATCH AS CONDITIONS
WARRANT LATER THIS AFTERNOON.
..DARROW.. 02/27/2011
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...EAX...TOP...ICT...DDC...
LAT...LON 38229855 39809396 39509251 38729310 37929554 37029840
38229855SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| 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, 3:24 PM CST | Mesoscale Discussion | SPC | Anderson, Butler, Chase, Coffey, Douglas, Franklin and 20 more | 66 min |
| 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.