Alert archive / Arkansas / Mesoscale Discussions in 2012
Mesoscale Discussion 110
The Storm Prediction Center issued this mesoscale discussion at Feb 3, 2012, 11:49 PM CST for 14 counties in Arkansas; 12 counties in Texas. It was in force for 56 min.
The area
The outline as issued.
The facts
- Issued
- Feb 3, 2012, 11:49 PM CST (05:49 UTC)
- Expired
- Feb 4, 2012, 12:45 AM CST
- In force
- 56 min
- Issued by
- the Storm Prediction Center
All 26 counties
Clark County, AR, Dallas County, AR, Garland County, AR, Grant County, AR, Hempstead County, AR, Hot Spring County, AR, Howard County, AR, Lafayette County, AR, Little River County, AR, Miller County, AR, Montgomery County, AR, Nevada County, AR, Pike County, AR, Sevier County, AR, Bowie County, TX, Camp County, TX, Cass County, TX, Franklin County, TX, Hopkins County, TX, Marion County, TX, Morris County, TX, Rains County, TX, Titus County, TX, Upshur County, TX, Van Zandt County, TX, Wood County, TX
The radar
The Shreveport radar (KSHV), 116 km from the middle of the area, began a volume at 05:50 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
Shreveport, LA (KSHV), launched 00:00Z, 5.8 hours before the alert went out and 119 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
- 785 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 633 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 201 m²/s²
- 0-3 km storm-relative helicity
- 251 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 5.9
The text
As transmitted, in the capitals the NWS used until 2016.
341 ACUS11 KWNS 040550 SWOMCD SPC MCD 040549 ARZ000-LAZ000-TXZ000-OKZ000-040645- MESOSCALE DISCUSSION 0110 NWS STORM PREDICTION CENTER NORMAN OK 1149 PM CST FRI FEB 03 2012 AREAS AFFECTED...NERN TX/FAR SERN OK/SWRN AR CONCERNING...SEVERE THUNDERSTORM WATCH 26... VALID 040549Z - 040645Z THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 26 CONTINUES. SEMI-ORGANIZED/FRONTAL BAND OF STORMS HAS REACHED THE ERN EDGE OF WW 26 ATTM...WITH AN OVERALL DECREASING TREND IN CONVECTIVE INTENSITY NOTED OVER THE PAST TWO HOURS. WHILE INSTABILITY ACROSS E TX/FAR SERN OK AND ADJACENT SWRN AR REMAINS SUFFICIENT FOR STORMS TO CONTINUE AS THE FRONT PROGRESSES SEWD ACROSS THE REGION...LITTLE SUPPORT FOR AN INCREASE IN CONVECTIVE ORGANIZATION/INTENSITY IS NOTED IN THE DATA. THUS -- WHILE AN ISOLATED/MARGINALLY SEVERE HAIL OR WIND EVENT MAY OCCUR OVER THE NEXT COUPLE OF HOURS...THREAT DOES NOT APPEAR TO WARRANT ADDITIONAL/DOWNSTREAM WW ISSUANCE. ..GOSS.. 02/04/2012 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...LZK...SHV...FWD... LAT...LON 32459597 32909590 34979325 34209227 32519446 32459597
SPC 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 | Bowie, Camp, Cass, Collin, Dallas, Delta and 21 more | 95 min |
| Feb 3, 6:57 PM CST | Severe Thunderstorm Watch | SPC | Camp, Collin, Cooke, Dallas, Delta, Denton and 18 more | 7 hr |
| Feb 3, 7:14 PM CST | Mesoscale Discussion | SPC | Anderson, Angelina, Austin, Bastrop, Bell, Brazos and 32 more | 91 min |
| Feb 3, 9:04 PM CST | Mesoscale Discussion | SPC | Camp, Collin, Dallas, Delta, Fannin, Franklin and 9 more | 86 min |
| Feb 3, 11:38 PM CST | Mesoscale Discussion | SPC | Bastrop, Bell, Bexar, Blanco, Brazos, Burleson and 20 more | 2 hr |
| Feb 4, 3:42 AM CST | Mesoscale Discussion | SPC | Angelina, Atascosa, Austin, Bexar, Caldwell, Colorado and 23 more | 3 hr |
Nearby
Mesoscale Discussions in Arkansas, 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.