Alert archive / Kansas / Mesoscale Discussions in 2011
Mesoscale Discussion 331
The Storm Prediction Center issued this mesoscale discussion at Apr 3, 2011, 8:15 PM CDT for 40 counties in Kansas; 28 counties in Missouri; Nowata County, Washington County, Oklahoma. It was in force for 60 min.
The area
The outline as issued.
The facts
- Issued
- Apr 3, 2011, 8:15 PM CDT (01:15 UTC)
- Expired
- Apr 3, 2011, 9:15 PM CDT
- In force
- 60 min
- Issued by
- the Storm Prediction Center
All 70 counties
Allen County, KS, Anderson County, KS, Atchison County, KS, Bourbon County, KS, Brown County, KS, Butler County, KS, Chase County, KS, Chautauqua County, KS, Cherokee County, KS, Coffey County, KS, Cowley County, KS, Crawford County, KS, Doniphan County, KS, Douglas County, KS, Elk County, KS, Franklin County, KS, Geary County, KS, Greenwood County, KS, Harvey County, KS, Jackson County, KS, Jefferson County, KS, Johnson County, KS, Labette County, KS, Leavenworth County, KS, Linn County, KS, Lyon County, KS, Marion County, KS, Miami County, KS, Montgomery County, KS, Morris County, KS, Neosho County, KS, Osage County, KS, Pottawatomie County, KS, Sedgwick County, KS, Shawnee County, KS, Sumner County, KS, Wabaunsee County, KS, Wilson County, KS, Woodson County, KS, Wyandotte County, KS, Adair County, MO, Andrew County, MO, Barton County, MO, Bates County, MO, Buchanan County, MO, Caldwell County, MO, Carroll County, MO, Cass County, MO, Chariton County, MO, Clay County, MO, Clinton County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Mercer County, MO, Platte County, MO, Putnam County, MO, Ray County, MO, Saline County, MO, Sullivan County, MO, Vernon County, MO, Nowata County, OK, Washington County, OK
The radar
The Pleasant Hill radar (KEAX), 46 km from the middle of the area, began a volume at 01:18 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, 1.3 hours before the alert went out and 90 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
- 1873 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 2220 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- 138 m²/s²
- 0-3 km storm-relative helicity
- 140 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 6.1
The text
As transmitted, in the capitals the NWS used until 2016.
058
ACUS11 KWNS 040116
SWOMCD
SPC MCD 040115
MOZ000-KSZ000-OKZ000-040215-
MESOSCALE DISCUSSION 0331
NWS STORM PREDICTION CENTER NORMAN OK
0815 PM CDT SUN APR 03 2011
AREAS AFFECTED...ERN KS AND NWRN MO
CONCERNING...SEVERE THUNDERSTORM WATCH 83...
VALID 040115Z - 040215Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 83
CONTINUES.
LINE OF BROKEN CELLS FROM NRN MO TO CNTRL KS WILL TREND MORE LINEAR
WITH TIME THIS EVENING WITH THREATS FOR LARGE HAIL. EMBEDDED
SEGMENTS MAY BECOME ORIENTED SUCH THAT BOWING SIGNATURES WILL GIVE
OCCASIONAL DAMAGING WINDS AS WELL. THE ACTIVITY WILL MOVE ESEWD
ACROSS ECNTRL KS AND INTO WCNTRL/NRN MO THROUGH LATE EVENING.
MEANWHILE...STORMS WERE BACKBUILDING SWWD ALONG THE SURGING COLD
FRONT/DRYLINE IN SCNTRL KS VCNTY WICHITA. THERE IS REASONABLE
CONFIDENCE BASED ON LATEST MODEL RUNS FOR STORMS TO CONTINUE INTO
PERHAPS NERN OK AND SERN KS BY 06Z. GIVEN THE VERY STEEP LAPSE
RATES IN PLACE...STORMS WOULD POSE A LARGE HAIL THREAT...ALONG WITH
A SECONDARY THREAT FOR DAMAGING WINDS. AS SUCH...A WW IS LIKELY
ACROSS THOSE AREAS SHORTLY.
..RACY.. 04/04/2011
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...SGF...EAX...TSA...TOP...ICT...OUN...
LAT...LON 39559258 39039288 38559382 38009398 37129458 36649574
36739673 37169775 38149760 39229677 39919550 40539330
40399243 39559258SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 3, 7:26 PM CDT | Mesoscale Discussion | SPC | Atchison, Brown, Chase, Dickinson, Doniphan, Douglas and 19 more | 64 min |
| Apr 3, 8:33 PM CDT | Severe Thunderstorm Watch | SPC | Allen, Bourbon, Butler, Chautauqua, Cherokee, Cowley and 8 more | 5 hr |
| Apr 3, 11:02 PM CDT | Mesoscale Discussion | SPC | Bourbon, Cherokee, Crawford, Labette, Neosho | 88 min |
| Apr 4, 1:29 AM CDT | Mesoscale Discussion | SPC | Cherokee | 91 min |
| Apr 3, 7:44 PM CDT | Mesoscale Discussion | SPC | Clark, Putnam, Schuyler, Scotland | 61 min |
| Apr 3, 8:11 PM CDT | Severe Thunderstorm Watch | SPC | Audrain, Boone, Callaway, Cole, Franklin, Gasconade and 12 more | 6 hr |
| Apr 3, 9:51 PM CDT | Mesoscale Discussion | SPC | Barry, McDonald, Newton | 84 min |
| Apr 3, 10:50 PM CDT | Mesoscale Discussion | SPC | Chariton, Howard, Knox, Lewis, Macon, Marion and 4 more | 85 min |
| Apr 4, 5:48 AM CDT | Mesoscale Discussion | SPC | Oregon, Ripley | 117 min |
| Apr 4, 7:22 AM CDT | Tornado Watch | SPC | Bollinger, Butler, Cape Girardeau, Carter, Dunklin, Mississippi and 7 more | 7 hr |
| Apr 4, 3:00 AM CDT | Mesoscale Discussion | SPC | Choctaw, McCurtain, Pushmataha | 3 hr |
| Apr 4, 3:44 AM CDT | Severe Thunderstorm Watch | SPC | LeFlore, McCurtain | 7 hr |
Nearby
Mesoscale Discussions in Kansas, 2011Mesoscale Discussions in Missouri, 2011Mesoscale Discussions in Oklahoma, 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.