Alert archive / Texas / Mesoscale Discussions in 2003
Mesoscale Discussion 65
The Storm Prediction Center issued this mesoscale discussion at Feb 14, 2003, 6:57 PM CST for Little River County, Arkansas; 49 counties in Texas. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 14, 2003, 6:57 PM CST (00:57 UTC)
- Expired
- Feb 14, 2003, 9:00 PM CST
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 50 counties
Little River County, AR, Anderson County, TX, Bastrop County, TX, Bell County, TX, Blanco County, TX, Bosque County, TX, Bowie County, TX, Brazos County, TX, Burleson County, TX, Burnet County, TX, Camp County, TX, Collin County, TX, Coryell County, TX, Dallas County, TX, Delta County, TX, Denton County, TX, Ellis County, TX, Falls County, TX, Fannin County, TX, Franklin County, TX, Freestone County, TX, Grayson County, TX, Hays County, TX, Henderson County, TX, Hill County, TX, Hopkins County, TX, Hunt County, TX, Johnson County, TX, Kaufman County, TX, Lamar County, TX, Lampasas County, TX, Lee County, TX, Leon County, TX, Limestone County, TX, McLennan County, TX, Milam County, TX, Morris County, TX, Navarro County, TX, Rains County, TX, Red River County, TX, Robertson County, TX, Rockwall County, TX, Smith County, TX, Tarrant County, TX, Titus County, TX, Travis County, TX, Upshur County, TX, Van Zandt County, TX, Williamson County, TX, Wood County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 107 km from the middle of the area, began a volume at 01:01 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, 1.0 hours before the alert went out and 133 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
- 1504 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 757 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 109 m²/s²
- 0-3 km storm-relative helicity
- 155 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 4.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 ACUS11 KWNS 150057 SWOMCD SPC MCD 150057 TXZ000-150300- MESOSCALE DISCUSSION 0065 NWS STORM PREDICTION CENTER NORMAN OK 0657 PM CST FRI FEB 14 2003 AREAS AFFECTED...CNTRL INTO NERN TX CONCERNING...SEVERE THUNDERSTORM WATCH 3... VALID 150057Z - 150300Z SEVERE THUNDERSTORMS CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING WINDS REMAIN POSSIBLE ACROSS WW 003. LATEST MESOANALYSIS INDICATES A WEAK CONFLUENCE ZONE/DRYLINE FROM AROUND SPS SWD TO W OF MWL TO E OF JCT. AIRMASS TO THE E OF THIS BOUNDARY REMAINS MODERATELY UNSTABLE WITH SBCAPES OF 1000-2000 J/KG. ERN EDGE OF BUOYANT WARM SECTOR APPEARS TO BE MARKED BY N-S OUTFLOW BOUNDARY EXTENDING FROM THE TKI/TRL AREA SWD THROUGH CRS TO AROUND OCH. REGIONAL RADAR DATA SHOWS TSTMS TRYING TO ORGANIZE ACROSS THE SRN PORTION OF WW 003. LACK OF STRONG...SUSTAINED LOW LEVEL CONVERGENCE APPEARS TO LIMITING ACTIVITY THUS FAR AS 00Z FWD SOUNDING INDICATED A SBCAPE OF 2000 J/KG WITH LITTLE OR NO CIN. CURRENT THINKING IS THAT CONVERGENCE ALONG AFOREMENTIONED CONFLUENT ZONE/DRYLINE WILL BEGIN TO INCREASE OVER THE NEXT COUPLE OF HOURS AS SHORTWAVE MOVING OUT OF NRN MEXICO ENHANCES LARGE SCALE ASCENT OVER REGION. GIVEN THE INSTABILITY/SHEAR PROFILES OBSERVED ON THE 00Z FWD/DRT SOUNDINGS...SEVERE THUNDERSTORMS CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING WINDS REMAIN POSSIBLE. ..MEAD/GOSS.. 02/15/2003 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... 30039783 30039908 31939792 33849676 33859545 33849414 31939536 30039657
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 14, 7:37 PM CST | Mesoscale Discussion | SPC | Little River | 113 min |
| Feb 14, 11:09 PM CST | Mesoscale Discussion | SPC | Benton, Carroll, Crawford, Franklin, Madison, Sebastian and 1 more | 2 hr |
| Feb 14, 11:20 PM CST | Severe Thunderstorm Watch | SPC | Benton, Carroll, Crawford, Franklin, Madison, Sebastian and 1 more | 6 hr |
| Feb 15, 12:31 AM CST | Mesoscale Discussion | SPC | Benton, Carroll, Crawford, Franklin, Madison, Sebastian and 1 more | 119 min |
| Feb 15, 3:15 AM CST | Mesoscale Discussion | SPC | Benton, Carroll, Crawford, Madison, Sebastian, Washington | 60 min |
| Feb 14, 9:12 PM CST | Mesoscale Discussion | SPC | Atascosa, Bandera, Bee, Bexar, Caldwell, Comal and 22 more | 2 hr |
| Feb 14, 10:16 PM CST | Mesoscale Discussion | SPC | Atascosa, Bandera, Bastrop, Bee, Bell, Bexar and 40 more | 119 min |
| Feb 15, 4:12 AM CST | Mesoscale Discussion | SPC | Refugio | 3 hr |
| Feb 15, 4:35 AM CST | Severe Thunderstorm Watch | SPC | Brooks, Cameron, Duval, Hidalgo, Jim Hogg, Jim Wells and 6 more | 4 hr |
| Feb 15, 6:48 AM CST | Mesoscale Discussion | SPC | Brooks, Cameron, Duval, Hidalgo, Jim Hogg, Jim Wells and 6 more | 87 min |
| Feb 15, 2:47 PM CST | Mesoscale Discussion | SPC | Atascosa, Bee, DeWitt, Goliad, Jim Wells, Karnes and 6 more | 118 min |
Nearby
Mesoscale Discussions in Texas, 2003Mesoscale Discussions in Arkansas, 2003Every mesoscale discussion in 2003
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.