Alert archive / Texas / Mesoscale Discussions in 2007

Mesoscale Discussion 375

March 30, 200726 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Mar 30, 2007, 4:44 AM CDT for 26 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Mar 30, 2007, 4:44 AM CDT (09:44 UTC)
Expired
Mar 30, 2007, 6:45 AM CDT
In force
2 hr
Issued by
the Storm Prediction Center
All 26 counties

Andrews County, TX, Bandera County, TX, Crane County, TX, Crockett County, TX, Dimmit County, TX, Ector County, TX, Edwards County, TX, Frio County, TX, Glasscock County, TX, Irion County, TX, Kerr County, TX, Kimble County, TX, Kinney County, TX, Martin County, TX, Maverick County, TX, Medina County, TX, Midland County, TX, Reagan County, TX, Real County, TX, Schleicher County, TX, Sutton County, TX, Terrell County, TX, Upton County, TX, Uvalde County, TX, Val Verde County, TX, Zavala County, TX

The radar

The Laughlin AFB radar (KDFX), 86 km from the middle of the area, began a volume at 09:45 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 9.7 hours before the alert went out and 77 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.

Skew-T log-pSkew-T log-p diagram, Del Rio, TX at 00:00Z on 2007-03-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Del Rio, TX at 00:00Z on 2007-03-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -34 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2708 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
-34 m²/s²
0-3 km storm-relative helicity
76 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 29, 7:32 PM CDTMesoscale DiscussionSPCAnderson, Camp, Cherokee, Franklin, Freestone, Gregg and 9 more88 min
Mar 29, 10:01 PM CDTMesoscale DiscussionSPCAnderson, Collin, Cooke, Dallas, Delta, Denton and 23 more119 min
Mar 30, 6:11 AM CDTSevere Thunderstorm WatchSPCAndrews, Borden, Brown, Callahan, Coke, Coleman and 40 more6 hr
Mar 30, 9:31 AM CDTMesoscale DiscussionSPCBandera, Bell, Bexar, Blanco, Bosque, Brown and 55 more59 min
Mar 30, 9:51 AM CDTTornado WatchSPCArcher, Bell, Blanco, Bosque, Brown, Burnet and 48 more8 hr
Mar 30, 11:47 AM CDTTornado WatchSPCCoke, Crockett, Edwards, Fisher, Irion, Jones and 12 more6 hr
Mar 30, 12:00 PM CDTMesoscale DiscussionSPCBrown, Callahan, Coleman, Comanche, Concho, Eastland and 20 more2 hr
Mar 30, 2:58 PM CDTMesoscale DiscussionSPCCoryell, McLennan92 min
Mar 30, 3:31 PM CDTMesoscale DiscussionSPCBosque, Brown, Clay, Coleman, Collin, Comanche and 34 more89 min
Mar 30, 4:51 PM CDTMesoscale DiscussionSPCBandera, Bastrop, Bell, Blanco, Bosque, Brown and 67 more54 min
Mar 30, 5:25 PM CDTTornado WatchSPCAnderson, Bandera, Bell, Bexar, Blanco, Bosque and 65 more8 hr

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.