Alert archive / Kansas / Mesoscale Discussions in 2012
Mesoscale Discussion 422
The Storm Prediction Center issued this mesoscale discussion at Apr 2, 2012, 7:17 PM CDT for 14 counties in Kansas; 5 counties in Oklahoma; 6 counties in Texas. It was in force for 58 min.
The area
The outline as issued.
The facts
- Issued
- Apr 2, 2012, 7:17 PM CDT (00:17 UTC)
- Expired
- Apr 2, 2012, 8:15 PM CDT
- In force
- 58 min
- Issued by
- the Storm Prediction Center
All 25 counties
Clark County, KS, Ellis County, KS, Finney County, KS, Ford County, KS, Gray County, KS, Haskell County, KS, Hodgeman County, KS, Lane County, KS, Meade County, KS, Ness County, KS, Rush County, KS, Seward County, KS, Stevens County, KS, Trego County, KS, Beaver County, OK, Ellis County, OK, Harper County, OK, Roger Mills County, OK, Texas County, OK, Hansford County, TX, Hemphill County, TX, Hutchinson County, TX, Lipscomb County, TX, Ochiltree County, TX, Roberts County, TX
The radar
The Dodge City radar (KDDC), 45 km from the middle of the area, began a volume at 00:19 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
Lamont, OK (KLMN), launched 00:00Z, 0.3 hours before the alert went out and 242 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
- 1701 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 1594 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 23 m²/s²
- 0-3 km storm-relative helicity
- 30 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
814
ACUS11 KWNS 030017
SWOMCD
SPC MCD 030017
KSZ000-OKZ000-TXZ000-030115-
MESOSCALE DISCUSSION 0422
NWS STORM PREDICTION CENTER NORMAN OK
0717 PM CDT MON APR 02 2012
AREAS AFFECTED...WRN KS...NERN TX PANHANDLE...NWRN OK
CONCERNING...SEVERE THUNDERSTORM WATCH 129...
VALID 030017Z - 030115Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 129
CONTINUES.
PRIMARY THREAT OF SEVERE HAIL SHOULD PERSIST FOR THE NEXT FEW HOURS
WITH MOSTLY ANAFRONTAL CONVECTION BEING UNDERCUT BY A SEWD MOVING
COLD FRONT...ANALYZED FROM NEAR RSL TO A TRIPLE-POINT CYCLONE 20 NE
AMA AT 00Z. STEEP MID-LEVEL LAPSE RATES AS SAMPLED BY 00Z AMA RAOB
COMBINED WITH A FEED OF 50S TO LOWER 60S SURFACE DEW POINTS WILL
MAINTAIN NUMEROUS TSTMS AMIDST ROBUST FORCED ASCENT DOWNSTREAM OF A
SHORT WAVE IMPULSE SHIFTING NWD IN THE TX PANHANDLE. HOWEVER...THE
CLUSTER CONVECTIVE MODE AND PROPAGATION OF CELLS TO THE W/NW OF THE
COLD FRONT SHOULD LIMIT HAIL SIZE TO MARGINALLY SEVERE.
..GRAMS.. 04/03/2012
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...ICT...OUN...DDC...GLD...AMA...
LAT...LON 39049920 39089987 38720042 37210142 36410159 35540140
35430061 35569970 35869923 37109953 37969939 38759901
39049920SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 2, 10:51 PM CDT | Severe Thunderstorm Watch | SPC | Barber, Clark, Comanche, Kiowa, Pratt | 5 hr |
| Apr 3, 1:14 AM CDT | Mesoscale Discussion | SPC | Harper, Kingman, Pawnee, Pratt, Stafford | 2 hr |
| Apr 2, 9:12 PM CDT | Mesoscale Discussion | SPC | Beaver, Beckham, Caddo, Comanche, Cotton, Custer and 13 more | 63 min |
| Apr 3, 3:32 AM CDT | Mesoscale Discussion | SPC | Caddo, Canadian, Comanche, Cotton, Grady, Jefferson and 2 more | 88 min |
| Apr 3, 8:36 AM CDT | Mesoscale Discussion | SPC | Bryan, Carter, Jefferson, Johnston, Love, Marshall and 2 more | 84 min |
| Apr 3, 9:18 AM CDT | Severe Thunderstorm Watch | SPC | Atoka, Bryan, Carter, Choctaw, Coal, Jefferson and 5 more | 8 hr |
| Apr 3, 11:47 AM CDT | Mesoscale Discussion | SPC | Atoka, Bryan, Carter, Choctaw, Jefferson, Johnston and 3 more | 118 min |
| Apr 3, 2:21 PM CDT | Mesoscale Discussion | SPC | Atoka, Bryan, Carter, Choctaw, Johnston, Love and 2 more | 84 min |
| Apr 3, 2:36 PM CDT | Tornado Watch | SPC | McCurtain | 7 hr |
| Apr 3, 3:05 PM CDT | Mesoscale Discussion | SPC | Atoka, Bryan, Carter, Choctaw, Coal, Johnston and 5 more | 85 min |
| Apr 3, 3:43 PM CDT | Severe Thunderstorm Watch | SPC | Atoka, Bryan, Choctaw, Haskell, Latimer, LeFlore and 3 more | 6 hr |
| Apr 2, 11:45 PM CDT | Mesoscale Discussion | SPC | Brown, Callahan, Coleman, Comanche, Concho, Eastland and 17 more | 2 hr |
| Apr 3, 12:08 PM CDT | Tornado Watch | SPC | Anderson, Bell, Bosque, Collin, Coryell, Dallas and 30 more | 9 hr |
| Apr 3, 1:12 PM CDT | Mesoscale Discussion | SPC | Bosque, Collin, Dallas, Denton, Ellis, Erath and 16 more | 93 min |
| Apr 3, 1:46 PM CDT | Mesoscale Discussion | SPC | Camp, Cass, Cherokee, Franklin, Gregg, Harrison and 9 more | 89 min |
| Apr 3, 4:38 PM CDT | Mesoscale Discussion | SPC | Austin, Bastrop, Brazos, Burleson, Caldwell, Fayette and 10 more | 67 min |
| Apr 3, 5:00 PM CDT | Mesoscale Discussion | SPC | Anderson, Bowie, Camp, Cass, Delta, Falls and 18 more | 60 min |
| Apr 3, 6:53 PM CDT | Mesoscale Discussion | SPC | Anderson, Angelina, Bastrop, Bowie, Brazos, Burleson and 24 more | 67 min |
Nearby
Mesoscale Discussions in Kansas, 2012Mesoscale Discussions in Texas, 2012Mesoscale Discussions in Oklahoma, 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.