Alert archive / Oklahoma / Mesoscale Discussions in 2012
Mesoscale Discussion 95
The Storm Prediction Center issued this mesoscale discussion at Feb 2, 2012, 11:44 PM CST for Barber County, Harper County, Kingman County, Kansas; 20 counties in Oklahoma; 17 counties in Texas. It was in force for 91 min.
The area
The outline as issued.
The facts
- Issued
- Feb 2, 2012, 11:44 PM CST (05:44 UTC)
- Expired
- Feb 3, 2012, 1:15 AM CST
- In force
- 91 min
- Issued by
- the Storm Prediction Center
All 40 counties
Barber County, KS, Harper County, KS, Kingman County, KS, Alfalfa County, OK, Beckham County, OK, Blaine County, OK, Caddo County, OK, Comanche County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Grant County, OK, Greer County, OK, Harmon County, OK, Harper County, OK, Jackson County, OK, Kiowa County, OK, Major County, OK, Roger Mills County, OK, Tillman County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Armstrong County, TX, Briscoe County, TX, Carson County, TX, Childress County, TX, Collingsworth County, TX, Cottle County, TX, Donley County, TX, Floyd County, TX, Gray County, TX, Hall County, TX, Hardeman County, TX, Hemphill County, TX, Lipscomb County, TX, Motley County, TX, Roberts County, TX, Swisher County, TX, Wheeler County, TX
The radar
The Altus AFB radar (KFDR), 145 km from the middle of the area, began a volume at 05:44 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
Norman, OK (KOUN), launched 00:00Z, 5.7 hours before the alert went out and 184 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
- 34 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 1011 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 217 m²/s²
- 0-3 km storm-relative helicity
- 316 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
040
ACUS11 KWNS 030544
SWOMCD
SPC MCD 030544
KSZ000-OKZ000-TXZ000-030715-
MESOSCALE DISCUSSION 0095
NWS STORM PREDICTION CENTER NORMAN OK
1144 PM CST THU FEB 02 2012
AREAS AFFECTED...TX PANHANDLE INTO ADJACENT WRN OK
CONCERNING...SEVERE THUNDERSTORM WATCH 23...
VALID 030544Z - 030715Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 23
CONTINUES.
RADAR IMAGERY OVER THE PAST HOUR HAS REVEALED PERSISTENT/INCREASING
CONVECTION...WITH A BAND OF MORE INTENSE/LOCALLY SEVERE STORMS
EXTENDING FROM W OF PVW NEWD INTO S CENTRAL KS. WITHIN THIS BAND OF
STORMS...A FEW CELLS HAVE EXHIBITED SOMEWHAT TRANSIENT -- BUT
TEMPORARILY INTENSE -- ROTATION IN LOWER LEVELS...PARTICULARLY FROM
NEAR AMA NEWD INTO NWRN OK.
WITH THE BOUNDARY LAYER CONTINUING TO MOISTEN AND SHEAR IN THE
LOWEST COUPLE OF KM QUITE STRONG...THE ONGOING/LOW-END TORNADO
POTENTIAL HAS BECOME A GREATER CONCERN GIVEN THE NOTED INTENSITY OF
THESE QUASI-TRANSIENT LOW-LEVEL MESOCYCLONES. STILL...WITH VERY
WEAK LOW-LEVEL LAPSE RATES AND LIKELIHOOD THAT THE BOUNDARY LAYER
REMAINS A BIT DECOUPLED...TORNADO THREAT STILL APPEARS SOMEWHAT
LIMITED. WE WILL CONTINUE TO EXAMINE RADAR AND ENVIRONMENTAL
EVOLUTION WITHIN THIS REGION...AND ANY POSSIBLE NEED FOR UPGRADE TO
TORNADO WATCH WITHIN PARTS OF THIS AREA.
..GOSS.. 02/03/2012
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...ICT...OUN...DDC...LUB...AMA...
LAT...LON 35229822 34349815 33820129 34300228 36030096 37139933
37789821 36779766 35229822SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 2, 6:08 PM CST | Mesoscale Discussion | SPC | Cheyenne, Sherman | 4 hr |
| Feb 2, 9:48 PM CST | Mesoscale Discussion | SPC | Barber, Comanche | 117 min |
| Feb 3, 2:00 AM CST | Mesoscale Discussion | SPC | Sumner | 60 min |
| Feb 3, 3:45 AM CST | Mesoscale Discussion | SPC | Cheyenne | 4 hr |
| Feb 2, 7:08 PM CST | Mesoscale Discussion | SPC | Beckham, Blaine, Caddo, Canadian, Comanche, Custer and 13 more | 67 min |
| Feb 2, 7:38 PM CST | Severe Thunderstorm Watch | SPC | Beckham, Blaine, Caddo, Canadian, Comanche, Cotton and 16 more | 7 hr |
| Feb 3, 2:25 AM CST | Tornado Watch | SPC | Beckham, Blaine, Caddo, Canadian, Comanche, Cotton and 16 more | 8 hr |
| Feb 3, 7:15 AM CST | Mesoscale Discussion | SPC | Beckham, Caddo, Canadian, Comanche, Cotton, Custer and 8 more | 90 min |
| Feb 3, 9:42 AM CST | Mesoscale Discussion | SPC | Caddo, Comanche, Cotton, Greer, Harmon, Jackson and 3 more | 63 min |
| Feb 3, 11:59 AM CST | Mesoscale Discussion | SPC | Carter, Comanche, Cotton, Garvin, Grady, Jefferson and 3 more | 91 min |
| Feb 3, 12:26 PM CST | Tornado Watch | SPC | Atoka, Bryan, Carter, Comanche, Cotton, Garvin and 8 more | 8 hr |
| Feb 3, 3:17 PM CST | Mesoscale Discussion | SPC | Carter, Garvin, Jefferson, Johnston, Love, Marshall and 1 more | 88 min |
| Feb 3, 5:41 PM CST | Mesoscale Discussion | SPC | Atoka, Bryan, Carter, Coal, Garvin, Hughes and 8 more | 2 hr |
| Feb 3, 6:35 AM CST | Mesoscale Discussion | SPC | Jasper, Newton, Sabine, Tyler | 115 min |
Nearby
Mesoscale Discussions in Oklahoma, 2012Mesoscale Discussions in Texas, 2012Mesoscale 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.