Alert archive / Kansas / Mesoscale Discussions in 2012
Mesoscale Discussion 568
The Storm Prediction Center issued this mesoscale discussion at Apr 19, 2012, 7:29 PM CDT for 15 counties in Kansas; 5 counties in Missouri; 12 counties in Oklahoma. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 19, 2012, 7:29 PM CDT (00:29 UTC)
- Expired
- Apr 19, 2012, 9:30 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 32 counties
Allen County, KS, Anderson County, KS, Bourbon County, KS, Chautauqua County, KS, Cherokee County, KS, Cowley County, KS, Crawford County, KS, Elk County, KS, Labette County, KS, Linn County, KS, Miami County, KS, Montgomery County, KS, Neosho County, KS, Wilson County, KS, Woodson County, KS, Barton County, MO, Bates County, MO, Cass County, MO, Henry County, MO, Vernon County, MO, Craig County, OK, Garfield County, OK, Kay County, OK, Major County, OK, Noble County, OK, Nowata County, OK, Osage County, OK, Ottawa County, OK, Pawnee County, OK, Payne County, OK, Rogers County, OK, Washington County, OK
The radar
The Wichita radar (KICT), 135 km from the middle of the area, began a volume at 00:29 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 00:00Z, 0.5 hours before the alert went out and 161 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
- 959 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 1497 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- 3 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.5
The text
As transmitted, in the capitals the NWS used until 2016.
307
ACUS11 KWNS 200029
SWOMCD
SPC MCD 200029
MOZ000-OKZ000-KSZ000-200230-
MESOSCALE DISCUSSION 0568
NWS STORM PREDICTION CENTER NORMAN OK
0729 PM CDT THU APR 19 2012
AREAS AFFECTED...SERN KS/WRN MO/NRN OK
CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY
VALID 200029Z - 200230Z
BAND OF CONVECTION IS DEVELOPING ALONG THE COLD FRONT FROM NWRN MO
SWWD INTO NRN OK. WITH SEVERE THREAT LIKELY TO REMAIN LIMITED...WW
IS NOT ANTICIPATED.
LATEST VISIBLE SATELLITE AND RADAR LOOPS SHOW DEVELOPING CONVECTION
ALONG AN ADVANCING COLD FRONT...WITHIN WEAKLY UNSTABLE AIRMASS THAT
EXTENDS FROM NWRN MO SWWD INTO SERN KS. EVENING RAOBS CONFIRM THE
OVERALL LACK OF INSTABILITY IN THIS REGION...AND MODEL SOUNDINGS
SUGGEST LITTLE IF ANY ELEVATED DESTABILIZATION ATOP A SLOWLY COOLING
BOUNDARY LAYER THIS EVENING. WHILE SHEAR PROFILES REMAIN SUPPORTIVE
OF ORGANIZED STORMS...LACK OF CAPE SHOULD MITIGATE THREAT FOR ANY
MORE THAN SMALL HAIL AND GUSTY WINDS -- PARTICULARLY FROM E CENTRAL
KS NEWD INTO NWRN MO.
FARTHER TO THE SW...SOME CONVECTIVE DEVELOPMENT EXTENDS WSWWD FROM
FAR SERN KS INTO NRN OK...WHERE SOMEWHAT MORE UNSTABLE AIRMASS
EXISTS -- WITH THE GREATEST SEVERE THREAT LIKELY TO REMAIN CONFINED
TO N CENTRAL OK WHERE THE NRN FRINGE OF THE STRONGER CAPE AXIS IS
OBSERVED. HOWEVER...WITH THIS AREA JUST N OF RECENTLY ISSUED SEVERE
THUNDERSTORM WATCH #183...AN EXPANSION IN AREA OF THE EXISTING WATCH
WOULD BE THE PREFERRED COURSE OF ACTION FOR ANY INCREASING/FUTURE
THREAT IMMEDIATELY N OF THIS WATCH...AS SUBSTANTIAL SEVERE THREAT
DOES NOT APPEAR TO EXTEND FAR ENOUGH N TO WARRANT A SEPARATE WW.
..GOSS.. 04/20/2012
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...SGF...EAX...TSA...TOP...ICT...OUN...
LAT...LON 38889417 38619366 36699474 36049631 36019811 36209867
36509835 37629614 38549513 38889417SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 19, 9:13 PM CDT | Mesoscale Discussion | SPC | Atoka, Bryan, Carter, Cleveland, Coal, Creek and 19 more | 62 min |
| Apr 19, 10:49 PM CDT | Mesoscale Discussion | SPC | Caddo, Canadian, Carter, Cleveland, Coal, Comanche and 22 more | 116 min |
Nearby
Mesoscale Discussions in Kansas, 2012Mesoscale Discussions in Oklahoma, 2012Mesoscale Discussions in Missouri, 2012Every mesoscale discussion in 2012
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.