Alert archive / Texas / Mesoscale Discussions in 2012
Mesoscale Discussion 108
The Storm Prediction Center issued this mesoscale discussion at Feb 3, 2012, 9:04 PM CST for 4 counties in Oklahoma; 15 counties in Texas. It was in force for 86 min.
The area
The outline as issued.
The facts
- Issued
- Feb 3, 2012, 9:04 PM CST (03:04 UTC)
- Expired
- Feb 3, 2012, 10:30 PM CST
- In force
- 86 min
- Issued by
- the Storm Prediction Center
Counties Choctaw County, OK, LeFlore County, OK, McCurtain County, OK, Pushmataha County, OK, Camp County, TX, Collin County, TX, Dallas County, TX, Delta County, TX, Fannin County, TX, Franklin County, TX, Hopkins County, TX, Hunt County, TX, Kaufman County, TX, Lamar County, TX, Rains County, TX, Red River County, TX, Rockwall County, TX, Titus County, TX, Wood County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 191 km from the middle of the area, began a volume at 03:06 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
Fort Worth, TX (KFWD), launched 00:00Z, 3.1 hours before the alert went out and 177 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.
632
ACUS11 KWNS 040305
SWOMCD
SPC MCD 040304
ARZ000-TXZ000-OKZ000-040430-
MESOSCALE DISCUSSION 0108
NWS STORM PREDICTION CENTER NORMAN OK
0904 PM CST FRI FEB 03 2012
AREAS AFFECTED...SERN OK/NERN TX
CONCERNING...SEVERE THUNDERSTORM WATCH 26...
VALID 040304Z - 040430Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 26
CONTINUES.
STORMS CONTINUE MOVING EWD IN A SEMI-ORGANIZED SW-NE FRONTAL
BAND...WITH EMBEDDED/STRONGER CELLS PRODUCING SEVERE HAIL OVER THE
PAST COUPLE OF HOURS. OTHER/WEAKER CONVECTION IS ONGOING EAST OF
THIS BAND...DRIVEN PRIMARILY BY LOW-LEVEL WARM ADVECTION.
WHILE THE FRONTAL BAND OF CONVECTION REMAINS SEMI-ORGANIZED...SOME
WEAKENING OF INDIVIDUAL/EMBEDDED UPDRAFTS HAS BEEN NOTED OVER THE
PAST HOUR. WHILE LOCAL SEVERE THREAT PERSISTS -- PRIMARILY IN THE
FORM OF MARGINAL HAIL...A CONTINUED/SLOW DOWNWARD TREND IS
EXPECTED...WHICH WOULD PRECLUDE ANY NECESSITY FOR FURTHER WW
ISSUANCE LATER THIS EVENING.
..GOSS.. 02/04/2012
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...LZK...SHV...TSA...FWD...OUN...
LAT...LON 32699511 32529654 32609724 33359674 35119496 35069434
33629431 32699511SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 3, 6:40 PM CST | Mesoscale Discussion | SPC | Bryan, Choctaw, Latimer, McCurtain, Pushmataha | 95 min |
| Feb 3, 6:57 PM CST | Severe Thunderstorm Watch | SPC | Choctaw, McCurtain, Pushmataha | 7 hr |
| 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.