Alert archive / Texas / Mesoscale Discussions in 2016

Mesoscale Discussion 469

April 26, 20165 states

The Storm Prediction Center issued this mesoscale discussion at Apr 26, 2016, 9:36 PM CDT for 5 states. It was in force for 114 min.

The area

The outline as issued.

The facts

Issued
Apr 26, 2016, 9:36 PM CDT (02:36 UTC)
Expired
Apr 26, 2016, 11:30 PM CDT
In force
114 min
Issued by
the Storm Prediction Center
Chance of a watch
95%
All 96 counties

Benton County, AR, Carroll County, AR, Crawford County, AR, Franklin County, AR, Garland County, AR, Hempstead County, AR, Howard County, AR, Johnson County, AR, Lafayette County, AR, Little River County, AR, Logan County, AR, Madison County, AR, Miller County, AR, Montgomery County, AR, Nevada County, AR, Newton County, AR, Pike County, AR, Polk County, AR, Pope County, AR, Scott County, AR, Sebastian County, AR, Sevier County, AR, Washington County, AR, Yell County, AR, Bossier Parish, LA, Caddo Parish, LA, McDonald County, MO, Adair County, OK, Atoka County, OK, Bryan County, OK, Cherokee County, OK, Choctaw County, OK, Craig County, OK, Delaware County, OK, Haskell County, OK, Latimer County, OK, LeFlore County, OK, Mayes County, OK, McCurtain County, OK, McIntosh County, OK, Muskogee County, OK, Pittsburg County, OK, Pushmataha County, OK, Sequoyah County, OK, Wagoner County, OK, Anderson County, TX, Bell County, TX, Bosque County, TX, Bowie County, TX, Burnet County, TX, Camp County, TX, Cass County, TX, Cherokee County, TX, Collin County, TX, Coryell County, TX, Delta County, TX, Ellis County, TX, Falls County, TX, Fannin County, TX, Franklin County, TX, Freestone County, TX, Gregg County, TX, Hamilton County, TX, Harrison County, TX, Henderson County, TX, Hill County, TX, Hopkins County, TX, Houston County, TX, Hunt County, TX, Kaufman County, TX, Lamar County, TX, Lampasas County, TX, Leon County, TX, Limestone County, TX, Llano County, TX, Madison County, TX, Marion County, TX, Mason County, TX, McLennan County, TX, Milam County, TX, Morris County, TX, Nacogdoches County, TX, Navarro County, TX, Panola County, TX, Rains County, TX, Red River County, TX, Robertson County, TX, Rockwall County, TX, Rusk County, TX, San Saba County, TX, Smith County, TX, Titus County, TX, Upshur County, TX, Van Zandt County, TX, Williamson County, TX, Wood County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 167 km from the middle of the area, began a volume at 02:34 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

Fort Worth, TX (KFWD), launched 00:00Z, 2.6 hours before the alert went out and 152 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 2016-04-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2622 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 00:00Z on 2016-04-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 126 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
2622 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
1224 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
126 m²/s²
0-3 km storm-relative helicity
95 m²/s²
Significant tornado parameter
1.5
Supercell composite
11.0

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 26, 10:21 PM CDTSevere Thunderstorm WatchSPCBenton, Boone, Carroll, Clark, Columbia, Conway and 26 more9 hr
Apr 27, 1:35 AM CDTMesoscale DiscussionSPCBaxter, Boone, Bradley, Calhoun, Carroll, Clark and 45 more115 min
Apr 27, 4:28 AM CDTMesoscale DiscussionSPCBeauregard, Natchitoches, Red River, Sabine, Vernon92 min
Apr 27, 4:56 AM CDTSevere Thunderstorm WatchSPCAllen, Beauregard, Calcasieu, Cameron, De Soto, Evangeline and 9 more5 hr
Apr 27, 7:30 AM CDTMesoscale DiscussionSPCAcadia, Allen, Avoyelles, Beauregard, Calcasieu, Caldwell and 19 more2 hr
Apr 27, 7:54 AM CDTSevere Thunderstorm WatchSPCAcadia, Ascension, Assumption, Avoyelles, Catahoula, Concordia and 29 more7 hr
Apr 26, 8:17 PM CDTMesoscale DiscussionSPCBates28 min
Apr 26, 8:50 PM CDTSevere Thunderstorm WatchSPCBarry, Barton, Bates, Benton, Camden, Cass and 26 more7 hr
Apr 27, 12:40 AM CDTMesoscale DiscussionSPCBarry, Benton, Camden, Cedar, Christian, Dade and 26 more95 min
Apr 27, 1:58 PM CDTMesoscale DiscussionSPCAdair, Andrew, Atchison, Buchanan, Caldwell, Clay and 16 more2 hr
Apr 27, 2:33 PM CDTTornado WatchSPCAdair, Andrew, Atchison, Audrain, Boone, Buchanan and 35 more7 hr
Apr 27, 5:34 PM CDTMesoscale DiscussionSPCAdair, Audrain, Boone, Caldwell, Callaway, Camden and 64 more116 min
Apr 26, 8:52 PM CDTMesoscale DiscussionSPCAtoka, Bryan, Canadian, Carter, Choctaw, Cleveland and 40 more53 min

Nearby

Mesoscale Discussions in Texas, 2016Mesoscale Discussions in Arkansas, 2016Mesoscale Discussions in Oklahoma, 2016Every mesoscale discussion in 2016

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.