Alert archive / Kansas / Mesoscale Discussions in 2011
Mesoscale Discussion 902
The Storm Prediction Center issued this mesoscale discussion at May 23, 2011, 4:38 PM CDT for 12 counties in Kansas. It was in force for 97 min.
The area
The outline as issued.
The facts
- Issued
- May 23, 2011, 4:38 PM CDT (21:38 UTC)
- Expired
- May 23, 2011, 6:15 PM CDT
- In force
- 97 min
- Issued by
- the Storm Prediction Center
Counties Butler County, KS, Chase County, KS, Cowley County, KS, Elk County, KS, Greenwood County, KS, Harper County, KS, Harvey County, KS, Kingman County, KS, Marion County, KS, Sedgwick County, KS, Sumner County, KS, Woodson County, KS
The radar
The Wichita radar (KICT), 30 km from the middle of the area, began a volume at 21:41 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
Lamont, OK (KLMN), launched 12:00Z, 9.6 hours before the alert went out and 121 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
- 1801 J/kg
- Mixed-layer CIN
- -359 J/kg
- Mixed-layer LCL
- 842 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 370 m²/s²
- 0-3 km storm-relative helicity
- 390 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.9
The text
As transmitted, in the capitals the NWS used until 2016.
619
ACUS11 KWNS 232139
SWOMCD
SPC MCD 232138
KSZ000-232315-
MESOSCALE DISCUSSION 0902
NWS STORM PREDICTION CENTER NORMAN OK
0438 PM CDT MON MAY 23 2011
AREAS AFFECTED...S-CNTRL THROUGH NERN KS
CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE
VALID 232138Z - 232315Z
STORMS MAY CONTINUE DEVELOPING NWD WITH TIME THROUGH S-CNTRL KS.
SUPERCELLS WILL BE THE INITIAL PRIMARY THREAT...BUT STORMS COULD
EVENTUALLY EVOLVE INTO AN MCS LATER TONIGHT. AREA IS BEING MONITORED
FOR A POSSIBLE WW.
STORMS ARE DEVELOPING NWD ALONG AN EXISTING OUTFLOW BOUNDARY INTO
S-CNTRL KS WHERE THE ATMOSPHERE IS MODERATELY UNSTABLE. OBJECTIVE
ANALYSIS INDICATES 2500-3000 J/KG MLCAPE FROM S-CNTRL THROUGH ERN
KS...AND 40-45 KT EFFECTIVE VERTICAL SHEAR WILL SUPPORT SUPERCELL
STORMS. THE LLJ WILL STRENGTHEN DURING THE EVENING...AND THIS COULD
SUPPORT ADDITIONAL STORMS DEVELOPING FARTHER NWD INTO KS...POSSIBLY
GROWING INTO AN MCS LATER TONIGHT.
..DIAL.. 05/23/2011
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...TOP...ICT...DDC...
LAT...LON 37119646 37039797 37389847 37869820 38489734 38659631
37739561 37119646SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 22, 7:52 PM CDT | Mesoscale Discussion | SPC | Cherokee, Crawford | 53 min |
| May 23, 5:07 AM CDT | Mesoscale Discussion | SPC | Bourbon, Chautauqua, Cherokee, Cowley, Crawford, Elk and 6 more | 113 min |
| May 23, 5:41 AM CDT | Mesoscale Discussion | SPC | Allen, Anderson, Bourbon, Chautauqua, Cherokee, Crawford and 7 more | 94 min |
| May 23, 6:08 AM CDT | Severe Thunderstorm Watch | SPC | Allen, Anderson, Bourbon, Chautauqua, Cherokee, Coffey and 11 more | 7 hr |
| May 23, 7:38 AM CDT | Mesoscale Discussion | SPC | Allen, Bourbon, Chautauqua, Cherokee, Crawford, Labette and 3 more | 97 min |
| May 23, 12:12 PM CDT | Mesoscale Discussion | SPC | Cherokee, Labette | 93 min |
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.