Alert archive / Texas / Mesoscale Discussions in 2012
Mesoscale Discussion 281
The Storm Prediction Center issued this mesoscale discussion at Mar 18, 2012, 11:37 PM CDT for 5 counties in Kansas; Beaver County, Ellis County, Harper County, Oklahoma; 8 counties in Texas. It was in force for 53 min.
The area
The outline as issued.
The facts
- Issued
- Mar 18, 2012, 11:37 PM CDT (04:37 UTC)
- Expired
- Mar 19, 2012, 12:30 AM CDT
- In force
- 53 min
- Issued by
- the Storm Prediction Center
Counties Clark County, KS, Ford County, KS, Gray County, KS, Meade County, KS, Seward County, KS, Beaver County, OK, Ellis County, OK, Harper County, OK, Collingsworth County, TX, Donley County, TX, Gray County, TX, Hemphill County, TX, Lipscomb County, TX, Ochiltree County, TX, Roberts County, TX, Wheeler County, TX
The radar
The Amarillo radar (KAMA), 136 km from the middle of the area, began a volume at 04:38 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
Amarillo Airport, TX (KAMA), launched 00:00Z, 4.6 hours before the alert went out and 136 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 4154 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 32 m²/s²
- 0-3 km storm-relative helicity
- 93 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
895
ACUS11 KWNS 190438
SWOMCD
SPC MCD 190437
OKZ000-KSZ000-TXZ000-190530-
MESOSCALE DISCUSSION 0281
NWS STORM PREDICTION CENTER NORMAN OK
1137 PM CDT SUN MAR 18 2012
AREAS AFFECTED...ERN TX PANHANDLE...NWRN OK INTO SWRN KS
CONCERNING...SEVERE POTENTIAL...WATCH LIKELY
VALID 190437Z - 190530Z
POTENTIAL EXISTS FOR SQUALL LINE TO DEVELOP AS FAR NORTH AS SWRN KS
AND NWRN OK INTO THE EARLY MORNING. DESPITE THE LINEAR MODE...A FEW
EMBEDDED SUPERCELLS WILL LIKELY DEVELOP WITHIN THE LINE. THE MAIN
THREATS WILL BE DAMAGING WIND AND LARGE HAIL...BUT ISOLATED
TORNADOES CANNOT BE RULED OUT.
STORMS ARE DEVELOPING FROM SWRN TX INTO THE TX PANHANDLE AS DEEPER
BAROCLINIC ZONE INTERCEPTS THE DRYLINE. THIS ZONE OF STRONG FORCING
HAS RESULTED IN RAPID LINEAR UPSCALE GROWTH. HOWEVER...THE STORMS
EXIST WITHIN STRONG VERTICAL SHEAR CHARACTERIZED BY LARGE 0-2 KM
HODOGRAPHS. THIS ENVIRONMENT WILL SUPPORT ORGANIZATION INCLUDING
BOWING/LEWP SEGMENTS AND EMBEDDED SUPERCELLS AS ACTIVITY DEVELOPS
EWD/NEWD WITHIN A MODERATELY UNSTABLE ENVIRONMENT.
..DIAL.. 03/19/2012
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...OUN...DDC...AMA...
LAT...LON 34900135 35770134 37130123 37800046 37689927 34940005
34900135SPC 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 19, 3:34 AM CDT | Mesoscale Discussion | SPC | Barber, Cowley, Harper, Sedgwick, Sumner | 86 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 Texas, 2012Mesoscale Discussions in Kansas, 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.