Alert archive / Oklahoma / Mesoscale Discussions in 2012
Mesoscale Discussion 93
The Storm Prediction Center issued this mesoscale discussion at Feb 2, 2012, 7:08 PM CST for 19 counties in Oklahoma; 16 counties in Texas. It was in force for 67 min.
The area
The outline as issued.
The facts
- Issued
- Feb 2, 2012, 7:08 PM CST (01:08 UTC)
- Expired
- Feb 2, 2012, 8:15 PM CST
- In force
- 67 min
- Issued by
- the Storm Prediction Center
All 35 counties
Beckham County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Comanche County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Garfield County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Kingfisher County, OK, Kiowa County, OK, Major County, OK, Roger Mills County, OK, Tillman County, OK, Washita County, OK, Woodward County, OK, Baylor County, TX, Childress County, TX, Collingsworth County, TX, Cottle County, TX, Crosby County, TX, Dickens County, TX, Donley County, TX, Floyd County, TX, Foard County, TX, Hall County, TX, Hardeman County, TX, King County, TX, Knox County, TX, Motley County, TX, Wheeler County, TX, Wilbarger County, TX
The radar
The Altus AFB radar (KFDR), 102 km from the middle of the area, began a volume at 01:10 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
Amarillo Airport, TX (KAMA), launched 00:00Z, 1.1 hours before the alert went out and 165 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
- 692 m above ground
- 0-6 km bulk shear
- 80 kt
- 0-1 km storm-relative helicity
- 317 m²/s²
- 0-3 km storm-relative helicity
- 390 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
790
ACUS11 KWNS 030108
SWOMCD
SPC MCD 030108
OKZ000-TXZ000-030215-
MESOSCALE DISCUSSION 0093
NWS STORM PREDICTION CENTER NORMAN OK
0708 PM CST THU FEB 02 2012
AREAS AFFECTED...PARTS OF THE TX S PLAINS AND PANHANDLE REGION INTO
ADJACENT WRN OK
CONCERNING...SEVERE POTENTIAL...WATCH LIKELY
VALID 030108Z - 030215Z
CONVECTION SLOWLY EXPANDING/INTENSIFYING ATTM ACROSS THE TX
PANHANDLE REGION CORRESPONDS WITH INCREASING SEVERE RISK. NEW WW
WILL LIKELY BE REQUIRED IN THE NEXT HOUR OR SO.
LATEST VAD/PROFILER ANALYSIS SHOWS A SLOW INCREASE IN SLY LOW-LEVEL
FLOW FIELD ACROSS W TX/WRN OK ATTM...WITH CORRESPONDING INCREASE IN
WARM ADVECTION SUPPORTING CONTINUED CONVECTIVE DEVELOPMENT FROM THE
TX PANHANDLE EWD/NEWD INTO SWRN OK/SWRN KS. MARGINAL INSTABILITY
REMAINS EVIDENT -- PER LATEST OBJECTIVE ANALYSES AND EVENING
RAOBS...WHICH HAS ACTED TO LIMIT CONVECTIVE INTENSITY THUS FAR.
PARTIALLY OFFSETTING THIS HOWEVER IS AN INCREASINGLY FAVORABLE FLOW
FIELD WITH HEIGHT...AS BOUNDARY LAYER SELYS VEER TO SLY AT H85...AND
THEN TO SWLY AT 50-70 KT AT H5.
OVERALL...EXPECT THREAT TO BE PRIMARILY IN THE FORM OF HAIL -- WITH
A FEW STRONGER SUPERCELL STORMS THAT ARE EXPECTED TO EVOLVE LIKELY
TO BECOME CAPABLE OF PRODUCING HAIL NEAR 1" IN DIAMETER. THREAT FOR
A LOCALLY DAMAGING GUST OR TWO ALSO IS EVIDENT -- PARTICULARLY IF
STORMS CAN GROW UPSCALE LINEARLY...AND AN ISOLATED TORNADO OR TWO
WILL ALSO BE POSSIBLE GIVEN THE INCREASING LOW-LEVEL SHEAR --
PARTICULARLY ON SERN FRINGES OF THE DISCUSSION AREA WHERE GREATER
LOW-LEVEL DEWPOINTS ARE OBSERVED.
..GOSS.. 02/03/2012
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...OUN...LUB...AMA...
LAT...LON 33260157 33890160 34980091 36369984 36669777 35279779
33579917 33260157SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 2, 7:38 PM CST | Severe Thunderstorm Watch | SPC | Beckham, Blaine, Caddo, Canadian, Comanche, Cotton and 16 more | 7 hr |
| Feb 2, 9:48 PM CST | Mesoscale Discussion | SPC | Alfalfa, Beaver, Beckham, Blaine, Custer, Dewey and 11 more | 117 min |
| Feb 2, 11:44 PM CST | Mesoscale Discussion | SPC | Alfalfa, Beckham, Blaine, Caddo, Comanche, Custer and 14 more | 91 min |
| Feb 3, 2:00 AM CST | Mesoscale Discussion | SPC | Alfalfa, Beckham, Blaine, Caddo, Canadian, Cleveland and 24 more | 60 min |
| 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, 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.