Alert archive / Texas / Mesoscale Discussions in 2013

Mesoscale Discussion 614

May 9, 201353 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 9, 2013, 6:12 PM CDT for 53 counties in Texas. It was in force for 63 min.

The area

The outline as issued.

The facts

Issued
May 9, 2013, 6:12 PM CDT (23:12 UTC)
Expired
May 9, 2013, 7:15 PM CDT
In force
63 min
Issued by
the Storm Prediction Center
All 53 counties

Anderson County, TX, Atascosa County, TX, Bandera County, TX, Bexar County, TX, Blanco County, TX, Brown County, TX, Burnet County, TX, Callahan County, TX, Coke County, TX, Coleman County, TX, Comal County, TX, Comanche County, TX, Concho County, TX, Crockett County, TX, Dimmit County, TX, Edwards County, TX, Freestone County, TX, Frio County, TX, Gillespie County, TX, Hays County, TX, Henderson County, TX, Irion County, TX, Kendall County, TX, Kerr County, TX, Kimble County, TX, Kinney County, TX, Lampasas County, TX, Leon County, TX, Llano County, TX, Mason County, TX, Maverick County, TX, McCulloch County, TX, Medina County, TX, Menard County, TX, Milam County, TX, Mills County, TX, Navarro County, TX, Nolan County, TX, Real County, TX, Robertson County, TX, Runnels County, TX, San Saba County, TX, Schleicher County, TX, Sterling County, TX, Sutton County, TX, Taylor County, TX, Tom Green County, TX, Travis County, TX, Uvalde County, TX, Val Verde County, TX, Van Zandt County, TX, Williamson County, TX, Zavala 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

Fort Worth, TX (KFWD), launched 12:00Z, 11.2 hours before the alert went out and 208 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, Fort Worth, TX at 12:00Z on 2013-05-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 474 joules per kilogram.LCLLFCEL10008507005003002001001 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, Fort Worth, TX at 12:00Z on 2013-05-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 229 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
474 J/kg
Mixed-layer CIN
-390 J/kg
Mixed-layer LCL
797 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
229 m²/s²
0-3 km storm-relative helicity
228 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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
May 9, 6:39 AM CDTMesoscale DiscussionSPCBosque, Brown, Callahan, Coleman, Comanche, Concho and 13 more3 hr
May 9, 9:37 AM CDTMesoscale DiscussionSPCBell, Bosque, Brown, Burnet, Coleman, Comanche and 15 more113 min
May 9, 11:52 AM CDTSevere Thunderstorm WatchSPCAnderson, Bell, Bosque, Brown, Burnet, Callahan and 44 more9 hr
May 9, 2:52 PM CDTMesoscale DiscussionSPCAngelina, Brazos, Grimes, Hardin, Houston, Jasper and 12 more53 min
May 9, 3:19 PM CDTMesoscale DiscussionSPCAnderson, Bell, Bosque, Brown, Burnet, Callahan and 42 more56 min
May 9, 3:34 PM CDTSevere Thunderstorm WatchSPCAngelina, Brazos, Burleson, Chambers, Cherokee, Gregg and 25 more6 hr
May 9, 5:38 PM CDTMesoscale DiscussionSPCBriscoe, Childress, Collingsworth, Cottle, Crosby, Donley and 4 more67 min
May 9, 6:40 PM CDTMesoscale DiscussionSPCAngelina, Cherokee, Hardin, Jasper, Liberty, Montgomery and 10 more2 hr

Nearby

Mesoscale Discussions in Texas, 2013Every mesoscale discussion in 2013

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.