Alert archive / Texas / Mesoscale Discussions in 2003
Mesoscale Discussion 697
The Storm Prediction Center issued this mesoscale discussion at May 2, 2003, 8:09 PM CDT for 29 counties in Texas. It was in force for 96 min.
The area
The outline as issued.
The facts
- Issued
- May 2, 2003, 8:09 PM CDT (01:09 UTC)
- Expired
- May 2, 2003, 9:45 PM CDT
- In force
- 96 min
- Issued by
- the Storm Prediction Center
All 29 counties
Anderson County, TX, Bell County, TX, Bosque County, TX, Burnet County, TX, Comanche County, TX, Coryell County, TX, Dallas County, TX, Ellis County, TX, Erath County, TX, Falls County, TX, Freestone County, TX, Hamilton County, TX, Henderson County, TX, Hill County, TX, Hood County, TX, Johnson County, TX, Lampasas County, TX, Leon County, TX, Limestone County, TX, McLennan County, TX, Milam County, TX, Mills County, TX, Navarro County, TX, Palo Pinto County, TX, Parker County, TX, Robertson County, TX, Somervell County, TX, Tarrant County, TX, Williamson County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 80 km from the middle of the area, began a volume at 01:13 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, 1.2 hours before the alert went out and 109 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
- 2747 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 846 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 71 m²/s²
- 0-3 km storm-relative helicity
- 168 m²/s²
- Significant tornado parameter
- 3.2
- Supercell composite
- 12.6
The text
As transmitted, in the capitals the NWS used until 2016.
253 ACUS11 KWNS 030109 SWOMCD SPC MCD 030109 TXZ000-030245- MESOSCALE DISCUSSION 0697 NWS STORM PREDICTION CENTER NORMAN OK 0809 PM CDT FRI MAY 02 2003 AREAS AFFECTED...CENTRAL AND ERN TX CONCERNING...SEVERE THUNDERSTORM WATCH 213... VALID 030109Z - 030245Z ISOLATED SEVERE THUNDERSTORMS REMAIN POSSIBLE IN CENTRAL WW 213...AS WELL AS JUST N INTO THE DAL/FTW METROPLEX. LATEST RADAR SHOWS STRONGEST CELL TO BE OVER HOOD COUNTY...MOVING ENE. THIS CELL COULD INTENSIFY OVER THE NEXT HOUR OR SO AS IT STAYS IN AREA OF STRONG INSTABILITY AND MODERATE SHEAR. 00Z FWD SOUNDING SHOWS 3000 MLCAPE...BUT WEAK BOUNDARY LAYER FLOW. HOWEVER...LATEST VWP OUT OF FWS DOES SHOW ABOUT 15 KTS OF SELY FLOW ABOUT 1 KM DEEP. THESE TRAJECTORIES WILL KEEP INFLOW AIR TO HOOD COUNTY STORM NORTH OF CURRENT CONVECTIVE CLUSTER FURTHER SOUTH. FWS VWP CERTAINLY FAVORS RIGHT MOVING STORMS WITH STORM MOTIONS SOUTH OF EAST...BUT SUPERCELL CHARACTERISTICS WILL BE POSSIBLE WITH ANY LEFT SPLITS AS WELL. ..JEWELL.. 05/03/2003 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...HGX...FWD...EWX...SJT... 31879892 32689871 33009770 32919695 32389587 31459535 31189556 30719719 30499820
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 2, 9:30 PM CDT | Mesoscale Discussion | SPC | Bowie, Camp, Cass, Collin, Delta, Fannin and 14 more | 2 hr |
| May 2, 9:50 PM CDT | Severe Thunderstorm Watch | SPC | Bowie, Cass, Morris, Red River, Titus | 5 hr |
| May 2, 10:25 PM CDT | Mesoscale Discussion | SPC | Bosque, Brown, Callahan, Coleman, Comanche, Concho and 11 more | 95 min |
| May 2, 11:42 PM CDT | Mesoscale Discussion | SPC | Bowie, Cass, Franklin, Morris, Red River, Titus | 93 min |
| May 3, 12:29 PM CDT | Mesoscale Discussion | SPC | Bowie, Camp, Cass, Collin, Delta, Denton and 16 more | 3 hr |
| May 3, 1:40 PM CDT | Tornado Watch | SPC | Bowie, Camp, Cass, Collin, Cooke, Delta and 20 more | 6 hr |
| May 3, 1:42 PM CDT | Mesoscale Discussion | SPC | Archer, Armstrong, Baylor, Briscoe, Carson, Childress and 33 more | 3 hr |
| May 3, 3:42 PM CDT | Mesoscale Discussion | SPC | Bowie, Camp, Cass, Collin, Cooke, Delta and 18 more | 2 hr |
| May 3, 4:00 PM CDT | Tornado Watch | SPC | Archer, Armstrong, Baylor, Briscoe, Childress, Clay and 22 more | 5 hr |
| May 3, 6:10 PM CDT | Mesoscale Discussion | SPC | Archer, Armstrong, Baylor, Borden, Briscoe, Brown and 51 more | 65 min |
| May 3, 6:49 PM CDT | Mesoscale Discussion | SPC | Bowie, Camp, Cass, Collin, Cooke, Delta and 18 more | 56 min |
Nearby
Mesoscale Discussions in Texas, 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.