Alert archive / Oklahoma / Mesoscale Discussions in 2012
Mesoscale Discussion 285
The Storm Prediction Center issued this mesoscale discussion at Mar 19, 2012, 3:34 AM CDT for 5 counties in Kansas; 27 counties in Oklahoma; Wilbarger County, Texas. It was in force for 86 min.
The area
The outline as issued.
The facts
- Issued
- Mar 19, 2012, 3:34 AM CDT (08:34 UTC)
- Expired
- Mar 19, 2012, 5:00 AM CDT
- In force
- 86 min
- Issued by
- the Storm Prediction Center
All 33 counties
Barber County, KS, Cowley County, KS, Harper County, KS, Sedgwick County, KS, Sumner County, KS, Alfalfa County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Cleveland County, OK, Comanche County, OK, Cotton County, OK, Custer County, OK, Dewey County, OK, Garfield County, OK, Grady County, OK, Grant County, OK, Jackson County, OK, Kay County, OK, Kingfisher County, OK, Kiowa County, OK, Lincoln County, OK, Logan County, OK, Major County, OK, Noble County, OK, Oklahoma County, OK, Pawnee County, OK, Payne County, OK, Tillman County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Wilbarger County, TX
The radar
The Vance AFB radar (KVNX), 84 km from the middle of the area, began a volume at 08:35 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, 8.6 hours before the alert went out and 96 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
- 877 J/kg
- Mixed-layer CIN
- -48 J/kg
- Mixed-layer LCL
- 866 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 206 m²/s²
- 0-3 km storm-relative helicity
- 311 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 4.0
The text
As transmitted, in the capitals the NWS used until 2016.
060
ACUS11 KWNS 190835
SWOMCD
SPC MCD 190834
OKZ000-KSZ000-TXZ000-191000-
MESOSCALE DISCUSSION 0285
NWS STORM PREDICTION CENTER NORMAN OK
0334 AM CDT MON MAR 19 2012
AREAS AFFECTED...WRN/CNTRL OK INTO PARTS OF S CNTRL KS
CONCERNING...SEVERE THUNDERSTORM WATCH 83...
VALID 190834Z - 191000Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 83
CONTINUES.
IT IS NOT YET CERTAIN THAT A NEW WW WILL BE NEEDED NORTH AND EAST OF
WW 83...BUT TRENDS WILL CONTINUE TO BE MONITORED.
THE NORTHEASTWARD ACCELERATING SEGMENT OF A MORE EXTENSIVE SQUALL
LINE...WHICH CONTINUES TO EVOLVE ACROSS THE SOUTHERN PLAINS...HAS
GENERALLY MAINTAINED A STEADY STRENGTH AS IT ADVANCES INTO WESTERN
OKLAHOMA. ACTIVITY APPEARS LIKELY TO RAPIDLY PROGRESS INTO THE
INTERSTATE 35 CORRIDOR OF CENTRAL OKLAHOMA AND SOUTH CENTRAL KANSAS
BY 11-12Z...WITH A CONTINUED RISK FOR LOCALLY STRONG AND DAMAGING
SURFACE GUSTS. THEREAFTER...INFLOW OF LESS UNSTABLE AIR IN
CONJUNCTION WITH WEAKENING UPPER SUPPORT...AND AT LEAST SOME
WEAKENING OF THE SOUTHERLY 850 MB JET ACROSS NORTH CENTRAL OKLAHOMA
INTO SOUTH CENTRAL KANSAS...MAY CONTRIBUTE TO A DIMINISHING SEVERE
WEATHER THREAT. IT IS POSSIBLE THAT SUFFICIENT WEAKENING MAY OCCUR
THAT AN ADDITIONAL WW TO THE NORTH AND EAST OF WW 83 MAY NOT BECOME
NECESSARY...WITH THE PRIMARY SEVERE THREAT PROBABLY BECOMING FOCUSED
ACROSS PARTS OF WEST CENTRAL TEXAS INTO THE RED RIVER VALLEY AFTER
DAYBREAK.
..KERR.. 03/19/2012
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...TSA...ICT...OUN...DDC...
LAT...LON 35829950 36899929 37409874 37729736 37369676 36499647
35539695 34669781 34149849 34039951 35829950SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 18, 8:38 PM CDT | Mesoscale Discussion | SPC | Finney, Gray, Lane, Meade | 67 min |
| Mar 18, 11:37 PM CDT | Mesoscale Discussion | SPC | Clark, Ford, Gray, Meade, Seward | 53 min |
| Mar 18, 7:37 PM CDT | Mesoscale Discussion | SPC | Beaver, Beckham, Ellis, Greer, Harmon, Jackson and 2 more | 53 min |
| Mar 18, 9:10 PM CDT | Mesoscale Discussion | SPC | Beckham, Ellis, Greer, Harmon, Jackson, Roger Mills and 2 more | 35 min |
| Mar 19, 1:37 AM CDT | Mesoscale Discussion | SPC | Beckham, Greer, Harmon, Jackson, Roger Mills | 83 min |
| Mar 19, 1:56 AM CDT | Severe Thunderstorm Watch | SPC | Alfalfa, Beckham, Blaine, Caddo, Canadian, Comanche and 19 more | 4 hr |
| Mar 19, 10:05 AM CDT | Mesoscale Discussion | SPC | Atoka, Bryan, Carter, Cleveland, Coal, Garvin and 15 more | 115 min |
| Mar 19, 2:15 PM CDT | Mesoscale Discussion | SPC | Bryan, Love, Marshall | 90 min |
| Mar 19, 3:55 PM CDT | Mesoscale Discussion | SPC | Adair, Atoka, Bryan, Cherokee, Choctaw, Coal and 14 more | 95 min |
| Mar 19, 4:20 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Atoka, Bryan, Cherokee, Choctaw, Coal and 11 more | 5 hr |
| Mar 19, 6:32 PM CDT | Mesoscale Discussion | SPC | Adair, Atoka, Bryan, Cherokee, Choctaw, Coal and 9 more | 58 min |
| Mar 19, 6:53 PM CDT | Tornado Watch | SPC | Adair, Cherokee, Choctaw, Delaware, Haskell, Latimer and 6 more | 5 hr |
| Mar 18, 10:09 PM CDT | Mesoscale Discussion | SPC | Andrews, Borden, Crane, Crosby, Dawson, Ector and 13 more | 96 min |
| Mar 18, 10:50 PM CDT | Severe Thunderstorm Watch | SPC | Andrews, Borden, Briscoe, Castro, Childress, Coke and 39 more | 11 hr |
| Mar 18, 11:23 PM CDT | Tornado Watch | SPC | Briscoe, Crosby, Floyd, Garza, Hale, Hall and 6 more | 4 hr |
| Mar 19, 4:13 AM CDT | Mesoscale Discussion | SPC | Coke, Fisher, Foard, Glasscock, Haskell, Howard and 16 more | 92 min |
| Mar 19, 4:39 AM CDT | Severe Thunderstorm Watch | SPC | Callahan, Coke, Coleman, Concho, Crockett, Fisher and 22 more | 7 hr |
| Mar 19, 10:46 AM CDT | Mesoscale Discussion | SPC | Callahan, Coke, Irion, Jones, Nolan, Runnels and 4 more | 89 min |
| Mar 19, 2:39 PM CDT | Tornado Watch | SPC | Bandera, Blanco, Bosque, Brown, Burnet, Coleman and 42 more | 7 hr |
| Mar 19, 6:05 PM CDT | Mesoscale Discussion | SPC | Atascosa, Bandera, Bastrop, Bexar, Blanco, Bosque and 47 more | 85 min |
| Mar 19, 6:21 PM CDT | Tornado Watch | SPC | Atascosa, Bandera, Bastrop, Bexar, Blanco, Burnet and 26 more | 7 hr |
Nearby
Mesoscale Discussions in Oklahoma, 2012Mesoscale Discussions in Kansas, 2012Mesoscale Discussions in Texas, 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.