Alert archive / Texas / Mesoscale Discussions in 2012
Mesoscale Discussion 106
The Storm Prediction Center issued this mesoscale discussion at Feb 3, 2012, 6:40 PM CST for 5 counties in Oklahoma; 27 counties in Texas. It was in force for 95 min.
The area
The outline as issued.
The facts
- Issued
- Feb 3, 2012, 6:40 PM CST (00:40 UTC)
- Expired
- Feb 3, 2012, 8:15 PM CST
- In force
- 95 min
- Issued by
- the Storm Prediction Center
All 32 counties
Bryan County, OK, Choctaw County, OK, Latimer County, OK, McCurtain County, OK, Pushmataha County, OK, Bowie County, TX, Camp County, TX, Cass County, TX, Collin County, TX, Dallas County, TX, Delta County, TX, Ellis County, TX, Fannin County, TX, Franklin County, TX, Gregg County, TX, Harrison County, TX, Henderson County, TX, Hopkins County, TX, Hunt County, TX, Kaufman County, TX, Lamar County, TX, Marion County, TX, Morris County, TX, Rains County, TX, Red River County, TX, Rockwall County, TX, Rusk County, TX, Smith County, TX, Titus County, TX, Upshur County, TX, Van Zandt County, TX, Wood County, TX
The radar
The Shreveport radar (KSHV), 180 km from the middle of the area, began a volume at 00:43 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
Fort Worth, TX (KFWD), launched 00:00Z, 0.7 hours before the alert went out and 169 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
- 1201 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 959 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 209 m²/s²
- 0-3 km storm-relative helicity
- 218 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 8.9
The text
As transmitted, in the capitals the NWS used until 2016.
875
ACUS11 KWNS 040041
SWOMCD
SPC MCD 040040
ARZ000-TXZ000-OKZ000-040215-
MESOSCALE DISCUSSION 0106
NWS STORM PREDICTION CENTER NORMAN OK
0640 PM CST FRI FEB 03 2012
AREAS AFFECTED...SERN OK/NERN TX
CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE
VALID 040040Z - 040215Z
BAND OF STORMS MOVING ACROSS ERN PORTIONS OF WW 25 REMAIN FAIRLY
WELL-ORGANIZED...WITH DEGREE OF THREAT EVIDENT ACROSS AREAS JUST E
OF THE WATCH POSSIBLY SUFFICIENT TO WARRANT NEW WW ISSUANCE.
LATEST OBJECTIVE ANALYSES AND EVENING FWD /FORT WORTH TX/ RAOB
REVEAL A PERSISTENT AXIS OF MIXED-LAYER CAPE IN THE 1000 TO 1500
J/KG RANGE...COINCIDENT WITH A ZONE OF LOW TO MID 60S DEWPOINTS
WHICH HAVE SPREAD NWD INTO THIS REGION. AS THE BAND OF STORMS
ALONG/JUST AHEAD OF THE FRONT CONTINUES TO MARCH THROUGH THIS ZONE
OF FAVORABLE THERMODYNAMICS...STORMS HAVE MAINTAINED INTENSITY --
AND EVEN INCREASED SOME OVER THE PAST HOUR. GIVEN RECENT TRENDS AND
AVAILABLE CAPE -- COMBINED WITH 0-6 KM SHEAR STILL SUPPORTIVE OF
VIGOROUS/ORGANIZED CONVECTION...THREAT FOR HAIL/WIND INTO SERN OK
AND NERN TX MAY REQUIRE ADDITIONAL WW ISSUANCE.
..GOSS.. 02/04/2012
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...LZK...SHV...TSA...FWD...OUN...
LAT...LON 31969628 32579744 34409598 35009516 34679458 33079403
32109453 31969628SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 3, 6:57 PM CST | Severe Thunderstorm Watch | SPC | Choctaw, McCurtain, Pushmataha | 7 hr |
| Feb 3, 9:04 PM CST | Mesoscale Discussion | SPC | Choctaw, LeFlore, McCurtain, Pushmataha | 86 min |
| Feb 3, 7:14 PM CST | Mesoscale Discussion | SPC | Anderson, Angelina, Austin, Bastrop, Bell, Brazos and 32 more | 91 min |
| Feb 3, 11:38 PM CST | Mesoscale Discussion | SPC | Bastrop, Bell, Bexar, Blanco, Brazos, Burleson and 20 more | 2 hr |
| Feb 3, 11:49 PM CST | Mesoscale Discussion | SPC | Bowie, Camp, Cass, Franklin, Hopkins, Marion and 6 more | 56 min |
| Feb 4, 3:42 AM CST | Mesoscale Discussion | SPC | Angelina, Atascosa, Austin, Bexar, Caldwell, Colorado and 23 more | 3 hr |
Nearby
Mesoscale 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.