Alert archive / Kansas / Mesoscale Discussions in 2012
Mesoscale Discussion 529
The Storm Prediction Center issued this mesoscale discussion at Apr 14, 2012, 2:28 PM CDT for 8 counties in Kansas. It was in force for 32 min.
The area
The outline as issued.
The facts
- Issued
- Apr 14, 2012, 2:28 PM CDT (19:28 UTC)
- Expired
- Apr 14, 2012, 3:00 PM CDT
- In force
- 32 min
- Issued by
- the Storm Prediction Center
Counties Clay County, KS, Cloud County, KS, Jewell County, KS, Lincoln County, KS, Mitchell County, KS, Ottawa County, KS, Republic County, KS, Washington County, KS
The radar
The Grand Island radar (KUEX), 113 km from the middle of the area, began a volume at 19:29 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 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, 7.5 hours before the alert went out and 192 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
- 1122 J/kg
- Mixed-layer CIN
- -27 J/kg
- Mixed-layer LCL
- 508 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 185 m²/s²
- 0-3 km storm-relative helicity
- 169 m²/s²
- Significant tornado parameter
- 1.1
- Supercell composite
- 6.9
The text
As transmitted, in the capitals the NWS used until 2016.
530
ACUS11 KWNS 141928
SWOMCD
SPC MCD 141928
KSZ000-142000-
MESOSCALE DISCUSSION 0529
NWS STORM PREDICTION CENTER NORMAN OK
0228 PM CDT SAT APR 14 2012
AREAS AFFECTED...N-CNTRL KS
CONCERNING...TORNADO WATCH 165...
VALID 141928Z - 142000Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 165 CONTINUES.
A LARGE...AND POTENTIALLY TORNADIC SUPERCELL IN MITCHELL COUNTY
KANSAS IS INTERACTING WITH A NWD-MOVING SFC WARM FRONT. THE
BAROCLINIC CIRCULATION ALONG THE WARM FRONT...ALONG WITH STRONGLY
UNSTABLE...BACKGROUND SSELY INFLOW OF 20-25 KT PER SFC OBS...WILL
SUPPORT A SUSTAINED SUPERCELL/TORNADO THREAT DURING THE NEXT HALF
HOUR TO HOUR...POSSIBLY LONGER. THE SUPERCELL MAY REORGANIZE AS A
LARGER MASS OF CONVECTION MOVES NEWD FROM LINCOLN COUNTY...WITH
ADDITIONAL MESOCYCLONES POTENTIALLY DEVELOPING OVER THE SRN FLANKS
OF MERGING CONVECTION THAT MAY APPROACH CLOUD AND OTTAWA
COUNTIES...POSSIBLY EVEN FARTHER EAST/NORTHEAST.
..COHEN.. 04/14/2012
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...TOP...ICT...GID...
LAT...LON 39289710 38869750 38829830 39209859 39479856 39809839
39939797 39939750 39769701 39289710SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 13, 9:14 PM CDT | Mesoscale Discussion | SPC | Allen, Anderson, Bourbon, Butler, Chase, Chautauqua and 17 more | 61 min |
| Apr 14, 3:42 AM CDT | Tornado Watch | SPC | Chautauqua, Labette, Montgomery | 5 hr |
| Apr 14, 7:11 AM CDT | Mesoscale Discussion | SPC | Cherokee, Labette | 64 min |
| Apr 14, 9:42 AM CDT | Mesoscale Discussion | SPC | Clark, Finney, Ford, Gove, Grant, Gray and 10 more | 93 min |
| Apr 14, 10:43 AM CDT | Tornado Watch | SPC | Barber, Barton, Clark, Clay, Cloud, Comanche and 42 more | 7 hr |
| Apr 14, 11:44 AM CDT | Mesoscale Discussion | SPC | Barber, Barton, Clark, Clay, Cloud, Comanche and 40 more | 61 min |
| Apr 14, 12:11 PM CDT | Mesoscale Discussion | SPC | Butler, Chase, Chautauqua, Coffey, Cowley, Dickinson and 19 more | 64 min |
| Apr 14, 1:41 PM CDT | Mesoscale Discussion | SPC | Decatur, Rawlins | 2 hr |
| Apr 14, 1:44 PM CDT | Mesoscale Discussion | SPC | Barton, Clark, Cloud, Edwards, Ellis, Ellsworth and 20 more | 61 min |
| Apr 14, 3:01 PM CDT | Mesoscale Discussion | SPC | Barber, Barton, Clark, Comanche, Edwards, Ellsworth and 10 more | 29 min |
| Apr 14, 3:48 PM CDT | Mesoscale Discussion | SPC | Barber, Barton, Clark, Clay, Cloud, Comanche and 33 more | 57 min |
| Apr 14, 4:47 PM CDT | Mesoscale Discussion | SPC | Atchison, Brown, Doniphan, Nemaha | 58 min |
| Apr 14, 4:54 PM CDT | Mesoscale Discussion | SPC | Barber, Barton, Clay, Cloud, Comanche, Dickinson and 32 more | 66 min |
| Apr 14, 5:00 PM CDT | Tornado Watch | SPC | Doniphan | 7 hr |
| Apr 14, 5:24 PM CDT | Tornado Watch | SPC | Barber, Barton, Brown, Butler, Chase, Chautauqua and 57 more | 9 hr |
Nearby
Mesoscale Discussions in Kansas, 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.