Alert archive / Texas / Mesoscale Discussions in 2003
Mesoscale Discussion 616
The Storm Prediction Center issued this mesoscale discussion at Apr 28, 2003, 9:20 PM CDT for 44 counties in Texas. It was in force for 85 min.
The area
The outline as issued.
The facts
- Issued
- Apr 28, 2003, 9:20 PM CDT (02:20 UTC)
- Expired
- Apr 28, 2003, 10:45 PM CDT
- In force
- 85 min
- Issued by
- the Storm Prediction Center
All 44 counties
Bell County, TX, Blanco County, TX, Bosque County, TX, Brown County, TX, Burnet County, TX, Caldwell County, TX, Callahan County, TX, Coke County, TX, Coleman County, TX, Comal County, TX, Comanche County, TX, Concho County, TX, Coryell County, TX, Crockett County, TX, Eastland County, TX, Edwards County, TX, Erath County, TX, Gillespie County, TX, Hamilton County, TX, Hays County, TX, Irion County, TX, Jones County, TX, Kendall County, TX, Kerr County, TX, Kimble County, TX, Lampasas County, TX, Llano County, TX, Mason County, TX, McCulloch County, TX, Menard County, TX, Mills County, TX, Nolan County, TX, Runnels County, TX, San Saba County, TX, Schleicher County, TX, Shackelford County, TX, Somervell County, TX, Stephens County, TX, Sterling County, TX, Sutton County, TX, Taylor County, TX, Tom Green County, TX, Travis County, TX, Williamson County, TX
The nearest sounding before it
Midland Regional, TX (KMAF), launched 00:00Z, 2.3 hours before the alert went out and 244 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
- 1070 J/kg
- Mixed-layer CIN
- -37 J/kg
- Mixed-layer LCL
- 2134 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 44 m²/s²
- 0-3 km storm-relative helicity
- 128 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
The text
As transmitted, in the capitals the NWS used until 2016.
218 ACUS11 KWNS 290220 SWOMCD SPC MCD 290220 TXZ000-290345- MESOSCALE DISCUSSION 0616 NWS STORM PREDICTION CENTER NORMAN OK 0920 PM CDT MON APR 28 2003 AREAS AFFECTED...PORTIONS W-CENTRAL TX CONCERNING...SEVERE THUNDERSTORM WATCH 178... VALID 290220Z - 290345Z CLUSTER OF STRONG-SEVERE TSTMS MOVING SEWD ACROSS PORTIONS W-CENTRAL TX SHOULD MAINTAIN POTENTIAL FOR DAMAGING WIND AND OCCASIONAL LARGE HAIL FOR AT LEAST ANOTHER 1-2 HOURS TOWARD PORTIONS COKE/RUNNELS/CONCHO/MCCULLOCH COUNTIES. ADDITIONAL WW MAY BE NECESSARY OVER REGION. SOME WEAKENING TREND IS ANTICIPATED WITH LOSS OF DIABATIC DESTABILIZATION IN FOREGOING BOUNDARY LAYER...AND GUST FRONT IS EVIDENT ARCING FROM 5 NM E THRU 20-25 NM SW OF MAIN REFLECTIVITY GRADIENT. STILL...ELEVATED INSTABILITY AND MOIST INFLOW MAY HELP TO MAINTAIN COMPLEX AS FORWARD-PROPAGATING MCS SEWD DOWN OLD OUTFLOW/DIFFERENTIAL HEATING BOUNDARY THROUGH REMAINDER EVENING...SEWD TOWARD SRN HILL COUNTRY. ELEVATED MUCAPE 1500-2000 J/KG ESTIMATED BASED ON MODIFIED RAOBS AND RUC FORECAST SOUNDINGS. ..EDWARDS.. 04/29/2003 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...FWD...EWX...SJT...EWX...SJT...LUB...MAF... 30409967 32979919 32049715 29619746 30100167 32220125 32220072 32870023 33049993 32939918 29809978
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 28, 7:22 PM CDT | Mesoscale Discussion | SPC | Armstrong, Borden, Briscoe, Carson, Castro, Coke and 29 more | 53 min |
| Apr 29, 1:38 PM CDT | Mesoscale Discussion | SPC | Borden, Briscoe, Childress, Coke, Cottle, Crockett and 31 more | 3 hr |
| Apr 29, 2:30 PM CDT | Severe Thunderstorm Watch | SPC | Armstrong, Borden, Briscoe, Carson, Childress, Coke and 32 more | 6 hr |
| Apr 29, 5:50 PM CDT | Mesoscale Discussion | SPC | Armstrong, Borden, Briscoe, Childress, Coke, Collingsworth and 40 more | 85 min |
| Apr 29, 6:25 PM CDT | Severe Thunderstorm Watch | SPC | Archer, Baylor, Borden, Callahan, Childress, Coke and 42 more | 6 hr |
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.