Alert archive / Texas / Mesoscale Discussions in 2014

Mesoscale Discussion 722

May 26, 2014Starr County, Texas

The Storm Prediction Center issued this mesoscale discussion at May 26, 2014, 11:45 PM CDT for Starr County, Texas. It was in force for 60 min.

The area

The outline as issued.

The facts

Issued
May 26, 2014, 11:45 PM CDT (04:45 UTC)
Expired
May 27, 2014, 12:45 AM CDT
In force
60 min
Issued by
the Storm Prediction Center
Chance of a watch
5%

County Starr County, TX

The radar

The Brownsville radar (KBRO), 151 km from the middle of the area, began a volume at 04:48 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 00:00Z, 4.8 hours before the alert went out and 198 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, Corpus Christi, TX at 00:00Z on 2014-05-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 759 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, Corpus Christi, TX at 00:00Z on 2014-05-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 95 square meters per square second.19395878Sfc1 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
759 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
642 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
95 m²/s²
0-3 km storm-relative helicity
306 m²/s²
Significant tornado parameter
1.2
Supercell composite
8.4

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 26, 7:38 PM CDTMesoscale DiscussionSPCComanche, Eastland, Erath, Hamilton, Jack, Lampasas and 4 more67 min
May 26, 8:04 PM CDTMesoscale DiscussionSPCBorden, Coke, Crane, Crockett, Dickens, Edwards and 19 more86 min
May 26, 10:21 PM CDTMesoscale DiscussionSPCBrown, Coleman, Concho, Irion, McCulloch, Reagan and 2 more54 min
May 27, 2:17 AM CDTMesoscale DiscussionSPCAtascosa, Bandera, Bexar, Blanco, Caldwell, Comal and 9 more2 hr
May 27, 9:19 AM CDTMesoscale DiscussionSPCJasper, Jefferson, Newton, Orange, Sabine56 min
May 27, 3:03 PM CDTMesoscale DiscussionSPCBosque, Brown, Callahan, Coleman, Collin, Comanche and 30 more117 min
May 27, 3:13 PM CDTMesoscale DiscussionSPCAransas, Atascosa, Bee, Duval, Frio, Goliad and 10 more62 min
May 27, 3:18 PM CDTSevere Thunderstorm WatchSPCBell, Bosque, Brown, Burnet, Callahan, Coleman and 45 more6 hr
May 27, 3:40 PM CDTTornado WatchSPCAransas, Atascosa, Bandera, Bee, Bexar, Blanco and 24 more6 hr
May 27, 5:30 PM CDTMesoscale DiscussionSPCAransas, Atascosa, Bee, Duval, Frio, Goliad and 10 more90 min
May 27, 6:00 PM CDTMesoscale DiscussionSPCBell, Bosque, Coryell, Ellis, Falls, Hamilton and 8 more90 min
May 27, 6:27 PM CDTMesoscale DiscussionSPCKenedy, Willacy93 min
May 27, 6:40 PM CDTTornado WatchSPCBrooks, Kenedy, Willacy2 hr

Nearby

Mesoscale Discussions in Texas, 2014Every mesoscale discussion in 2014

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.