Alert archive / Texas / Mesoscale Discussions in 2013

Mesoscale Discussion 367

April 1, 201333 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Apr 1, 2013, 11:52 PM CDT for 33 counties in Texas. It was in force for 53 min.

The area

The outline as issued.

The facts

Issued
Apr 1, 2013, 11:52 PM CDT (04:52 UTC)
Expired
Apr 2, 2013, 12:45 AM CDT
In force
53 min
Issued by
the Storm Prediction Center
Chance of a watch
40%
All 33 counties

Bell County, TX, Bosque County, TX, Brown County, TX, Callahan County, TX, Coke County, TX, Coleman County, TX, Comanche County, TX, Concho County, TX, Coryell County, TX, Eastland County, TX, Erath County, TX, Fisher County, TX, Glasscock County, TX, Hamilton County, TX, Hill County, TX, Hood County, TX, Johnson County, TX, Jones County, TX, Lampasas County, TX, McCulloch County, TX, McLennan County, TX, Mills County, TX, Mitchell County, TX, Nolan County, TX, Palo Pinto County, TX, Parker County, TX, Runnels County, TX, San Saba County, TX, Shackelford County, TX, Somervell County, TX, Stephens County, TX, Sterling County, TX, Taylor County, TX

The radar

The Dyess AFB radar (KDYX), 68 km from the middle of the area, began a volume at 04:41 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

Fort Worth, TX (KFWD), launched 00:00Z, 4.9 hours before the alert went out and 204 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 00:00Z on 2013-04-02Temperature 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, Fort Worth, TX at 00:00Z on 2013-04-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -2 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2618 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
-2 m²/s²
0-3 km storm-relative helicity
100 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
Apr 1, 7:39 PM CDTMesoscale DiscussionSPCBaylor, Callahan, Haskell, Jones, King, Knox and 5 more66 min
Apr 2, 3:20 AM CDTMesoscale DiscussionSPCBell, Bosque, Burleson, Coryell, Falls, Hamilton and 6 more115 min
Apr 2, 1:42 PM CDTMesoscale DiscussionSPCBrewster, Concho, Crockett, Edwards, Irion, Jeff Davis and 11 more93 min
Apr 2, 1:59 PM CDTMesoscale DiscussionSPCBandera, Bastrop, Bell, Blanco, Bosque, Burleson and 25 more61 min
Apr 2, 2:35 PM CDTSevere Thunderstorm WatchSPCAtascosa, Bandera, Bastrop, Bell, Bexar, Blanco and 56 more8 hr
Apr 2, 3:38 PM CDTMesoscale DiscussionSPCAustin, Brazoria, Brazos, Burleson, Colorado, Fort Bend and 7 more67 min
Apr 2, 3:54 PM CDTSevere Thunderstorm WatchSPCAustin, Brazoria, Brazos, Burleson, Chambers, Colorado and 14 more7 hr
Apr 2, 5:03 PM CDTMesoscale DiscussionSPCBandera, Bastrop, Bell, Bexar, Blanco, Brewster and 41 more87 min
Apr 2, 5:41 PM CDTMesoscale DiscussionSPCAustin, Brazoria, Burleson, Colorado, Fayette, Fort Bend and 9 more94 min
Apr 2, 6:33 PM CDTMesoscale DiscussionSPCArcher, Baylor, Callahan, Eastland, Fisher, Haskell and 12 more117 min

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; radar from the NEXRAD Level II archive.