Alert archive / Texas / Mesoscale Discussions in 2003
Mesoscale Discussion 1221
The Storm Prediction Center issued this mesoscale discussion at Jun 3, 2003, 12:34 PM MDT for 5 counties in New Mexico; 15 counties in Texas. It was in force for 116 min.
The area
The outline as issued.
The facts
- Issued
- Jun 3, 2003, 12:34 PM MDT (18:34 UTC)
- Expired
- Jun 3, 2003, 2:30 PM MDT
- In force
- 116 min
- Issued by
- the Storm Prediction Center
Counties Curry County, NM, Harding County, NM, Mora County, NM, Quay County, NM, Roosevelt County, NM, Bailey County, TX, Castro County, TX, Cochran County, TX, Crosby County, TX, Deaf Smith County, TX, Hale County, TX, Hockley County, TX, Lamb County, TX, Lubbock County, TX, Lynn County, TX, Oldham County, TX, Parmer County, TX, Swisher County, TX, Terry County, TX, Yoakum County, TX
The watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Amarillo Airport, TX (KAMA), launched 12:00Z, 6.6 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
- 116 J/kg
- Mixed-layer CIN
- -288 J/kg
- Mixed-layer LCL
- 922 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 120 m²/s²
- 0-3 km storm-relative helicity
- 563 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.0
The text
As transmitted, in the capitals the NWS used until 2016.
197 ACUS11 KWNS 031835 SWOMCD SPC MCD 031834 TXZ000-NMZ000-032030- MESOSCALE DISCUSSION 1221 NWS STORM PREDICTION CENTER NORMAN OK 0134 PM CDT TUE JUN 03 2003 AREAS AFFECTED...ERN NM AND WRN TX CONCERNING...SEVERE THUNDERSTORM POTENTIAL VALID 031834Z - 032030Z SEVERE THREAT WILL CONTINUE TO INCREASE OVER ERN NM AND THE TX SOUTH PLAINS THROUGH THE MID AFTERNOON. A WW WILL LIKELY BE NEEDED BY 03/20Z. GREATEST POTENTIAL FOR SEVERE THUNDERSTORM DEVELOPMENT OVER THE NEXT 2 HOURS WILL BE IN THE TCC/CVS AREA. SFC MESOANALYSIS AND VISIBLE SAT IMAGERY INDICATED A MESOLOW...POSSIBLY TERRAIN ENHANCED...CENTERED 10 SE OF TCC OR JUST NORTH OF THE CAPROCK ESCARPMENT. DESPITE MODERATE INHIBITION REMAINING OVER THE AREA ...100 J/KG OF CIN... STRONG CONVERGENCE IN THE VICINITY OF THE SURFACE LOW AND ADDITIONAL CONVERGENCE ASSOCIATED WITH A FRONTAL BOUNDARY MOVING SWD AT 20 KTS OVER THE CENTRAL/NRN TX PANHANDLE SHOULD ALLOW FOR CONVECTIVE INITIATION IN THIS AREA WITHIN THE NEXT 2 HOURS. SEWD STORM MOTION WILL TAKE ANY CONVECTION THAT DEVELOPS OVER THIS AREA INTO TX SOUTH PLAINS/LBB AREA. STRONG LOW LEVEL SHEAR...ESPECIALLY IN THE VICINITY OF A NW-SE OUTFLOW BOUNDARY EXTENDING FROM BAILY TO GARZA COUNTIES ALONG WITH MODERATE INSTABILITY /2000-2500 J/KG/ AND RELATIVELY LOW LCL HEIGHTS FAVOR THE THREAT FOR ISOLATED TORNADOES. ..CROSBIE.. 06/03/2003 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...LUB...AMA...MAF...ABQ... 33410343 34250405 36150506 36250315 33450084 32680252
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 2, 7:31 PM MDT | Mesoscale Discussion | SPC | Colfax, Harding, Mora, Quay, San Miguel, Union | 89 min |
| Jun 2, 10:05 PM MDT | Severe Thunderstorm Watch | SPC | Union | 5 hr |
| Jun 3, 2:20 PM MDT | Tornado Watch | SPC | Curry, Harding, Quay, Roosevelt | 6 hr |
| Jun 3, 2:55 PM MDT | Severe Thunderstorm Watch | SPC | Lea | 5 hr |
| Jun 2, 6:02 PM MDT | Mesoscale Discussion | SPC | Atascosa, Brazoria, Chambers, Colorado, DeWitt, Fort Bend and 12 more | 118 min |
| Jun 3, 12:06 AM MDT | Mesoscale Discussion | SPC | Armstrong, Briscoe, Carson, Castro, Childress, Cottle and 18 more | 114 min |
| Jun 3, 4:48 AM MDT | Mesoscale Discussion | SPC | Armstrong, Briscoe, Carson, Cottle, Crosby, Dickens and 11 more | 117 min |
| Jun 3, 12:02 PM MDT | Mesoscale Discussion | SPC | Bandera, Blanco, Comal, Edwards, Gillespie, Hays and 8 more | 118 min |
| Jun 3, 12:25 PM MDT | Severe Thunderstorm Watch | SPC | Atascosa, Bandera, Bastrop, Bexar, Blanco, Caldwell and 18 more | 6 hr |
| Jun 3, 3:40 PM MDT | Severe Thunderstorm Watch | SPC | Bee, Brooks, Cameron, Dimmit, Duval, Hidalgo and 13 more | 5 hr |
| Jun 3, 4:43 PM MDT | Mesoscale Discussion | SPC | Atascosa, Bandera, Bastrop, Bexar, Blanco, Caldwell and 15 more | 62 min |
Nearby
Mesoscale Discussions in Texas, 2003Mesoscale Discussions in New Mexico, 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.