Alert archive / Texas / Mesoscale Discussions in 2019

Mesoscale Discussion 192

March 13, 20194 states

The Storm Prediction Center issued this mesoscale discussion at Mar 13, 2019, 5:59 AM CDT for 4 states. It was in force for 91 min.

The area

The outline as issued.

The facts

Issued
Mar 13, 2019, 5:59 AM CDT (10:59 UTC)
Expired
Mar 13, 2019, 7:30 AM CDT
In force
91 min
Issued by
the Storm Prediction Center
Chance of a watch
40%
All 23 counties

Little River County, AR, Caddo Parish, LA, De Soto Parish, LA, Atoka County, OK, Choctaw County, OK, McCurtain County, OK, Pushmataha County, OK, Bowie County, TX, Camp County, TX, Cass County, TX, Franklin County, TX, Gregg County, TX, Harrison County, TX, Lamar County, TX, Marion County, TX, Morris County, TX, Panola County, TX, Red River County, TX, Rusk County, TX, Smith County, TX, Titus County, TX, Upshur County, TX, Wood County, TX

The radar

The Shreveport radar (KSHV), 166 km from the middle of the area, began a volume at 10:58 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, 11.0 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 2019-03-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 22 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 2019-03-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 402 square meters per square second.1939587897117Sfc1 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
22 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
558 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
402 m²/s²
0-3 km storm-relative helicity
368 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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
Mar 13, 5:51 PM CDTMesoscale DiscussionSPCAshley, Chicot, Craighead, Crittenden, Cross, Desha and 6 more114 min
Mar 13, 12:31 AM CDTMesoscale DiscussionSPCCaddo, Comanche, Cotton, Grady, Greer, Harmon and 6 more59 min
Mar 13, 12:47 AM CDTSevere Thunderstorm WatchSPCBeckham, Caddo, Carter, Comanche, Cotton, Grady and 12 more5 hr
Mar 12, 7:25 PM CDTMesoscale DiscussionSPCAndrews, Bailey, Borden, Briscoe, Castro, Childress and 29 more2 hr
Mar 12, 8:28 PM CDTMesoscale DiscussionSPCAndrews, Ector, Gaines, Reeves, Terry, Ward and 2 more2 hr
Mar 12, 9:43 PM CDTSevere Thunderstorm WatchSPCBriscoe, Childress, Cottle, Crosby, Dickens, Floyd and 10 more5 hr
Mar 12, 10:01 PM CDTTornado WatchSPCBorden, Brown, Callahan, Coke, Coleman, Concho and 36 more7 hr
Mar 12, 10:19 PM CDTMesoscale DiscussionSPCBorden, Coke, Crane, Crockett, Dawson, Glasscock and 12 more116 min
Mar 13, 12:42 AM CDTMesoscale DiscussionSPCCallahan, Coke, Coleman, Concho, Crockett, Edwards and 18 more93 min
Mar 13, 1:37 AM CDTMesoscale DiscussionSPCBell, Bosque, Brown, Burnet, Callahan, Coleman and 22 more83 min
Mar 13, 1:51 AM CDTSevere Thunderstorm WatchSPCBell, Bosque, Collin, Comanche, Cooke, Coryell and 36 more5 hr
Mar 13, 3:03 AM CDTMesoscale DiscussionSPCComanche, Erath, Hood, Jack, Palo Pinto, Parker57 min
Mar 13, 4:19 AM CDTMesoscale DiscussionSPCBell, Bosque, Burnet, Collin, Cooke, Coryell and 11 more86 min

Nearby

Mesoscale Discussions in Texas, 2019Mesoscale Discussions in Oklahoma, 2019Mesoscale Discussions in Louisiana, 2019Every mesoscale discussion in 2019

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.