Alert archive / Texas / Mesoscale Discussions in 2007
Mesoscale Discussion 1007
The Storm Prediction Center issued this mesoscale discussion at Jun 5, 2007, 7:21 AM CDT for 32 counties in Texas. It was in force for 84 min.
The area
The outline as issued.
The facts
- Issued
- Jun 5, 2007, 7:21 AM CDT (12:21 UTC)
- Expired
- Jun 5, 2007, 8:45 AM CDT
- In force
- 84 min
- Issued by
- the Storm Prediction Center
All 32 counties
Aransas County, TX, Atascosa County, TX, Bandera County, TX, Bee County, TX, Bexar County, TX, Calhoun County, TX, Comal County, TX, DeWitt County, TX, Dimmit County, TX, Duval County, TX, Frio County, TX, Goliad County, TX, Gonzales County, TX, Guadalupe County, TX, Jackson County, TX, Jim Wells County, TX, Karnes County, TX, Kendall County, TX, Kerr County, TX, Kleberg County, TX, La Salle County, TX, Lavaca County, TX, Live Oak County, TX, McMullen County, TX, Medina County, TX, Nueces County, TX, Refugio County, TX, San Patricio County, TX, Victoria County, TX, Webb County, TX, Wilson County, TX, Zavala County, TX
The radar
The Corpus Christi radar (KCRP), 131 km from the middle of the area, began a volume at 12:22 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
Corpus Christi, TX (KCRP), launched 12:00Z, 0.4 hours before the alert went out and 149 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
- 2234 J/kg
- Mixed-layer CIN
- -64 J/kg
- Mixed-layer LCL
- 848 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- -15 m²/s²
- 0-3 km storm-relative helicity
- 80 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 4.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 ACUS11 KWNS 051221 SWOMCD SPC MCD 051221 TXZ000-051345- MESOSCALE DISCUSSION 1007 NWS STORM PREDICTION CENTER NORMAN OK 0721 AM CDT TUE JUN 05 2007 AREAS AFFECTED...SOUTH CENTRAL TX CONCERNING...SEVERE THUNDERSTORM WATCH 346... VALID 051221Z - 051345Z THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 346 CONTINUES. STRONG DAMAGING WINDS LIKELY WITH BOW ECHO AS IT ACCELERATES ESEWD ACROSS SRN HALF OF WW 346. 61 KT GUST REPORTED AT COT AT 1210Z. AT 12Z...REGIONAL RADARS SHOWED THE BOW ECHO EXTENDING FROM MEDINA COUNTY TO LA SALLE COUNTY AND THEN SWWD TO THE INTERNATIONAL BORDER IN NWRN WEBB COUNTY. THE APEX OF THE BOW...NOW LOCATED IN LA SALLE COUNTY...CONTINUES TO ACCELERATE AT NEAR 45 KT AS IT TRACKS ESEWD ALONG A SURFACE BOUNDARY...WHICH EXTENDED FROM JUST S OF DRT THROUGH THE BOW APEX NEAR COT TO THE TX COASTAL BEND AT 50 S VCT. AIR MASS ALONG/S OF THIS BOUNDARY IS VERY UNSTABLE. THIS INSTABILITY COMBINED WITH EFFECTIVE BULK SHEAR VALUES OF 30-35 KT SUGGEST THE MCS WILL BE MAINTAINED DOWNSTREAM TOWARD THE TX COAST AS IS CURRENTLY INDICATED BY EXPANSIVE/ INCREASING SPATIAL COVERAGE OF COLD CLOUD TOP TEMPERATURES. ..PETERS.. 06/05/2007 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...HGX...CRP...EWX...BRO... 28310032 28709984 30269943 29549671 28139604 27109675 27249952
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 4, 7:19 PM CDT | Mesoscale Discussion | SPC | Andrews, Crane, Culberson, Ector, Gaines, Hudspeth and 7 more | 56 min |
| Jun 5, 2:01 AM CDT | Mesoscale Discussion | SPC | Dimmit, Frio, Kinney, Maverick, Medina, Terrell and 3 more | 59 min |
| Jun 5, 5:13 AM CDT | Severe Thunderstorm Watch | SPC | Aransas, Atascosa, Bandera, Bee, Bexar, Calhoun and 29 more | 7 hr |
| Jun 5, 10:40 AM CDT | Mesoscale Discussion | SPC | Aransas, Atascosa, Bee, Calhoun, DeWitt, Duval and 13 more | 95 min |
Nearby
Mesoscale Discussions in Texas, 2007Every mesoscale discussion in 2007
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.