Alert archive / Texas / Mesoscale Discussions in 2023

Mesoscale Discussion 1017

June 13, 2023Miller County, Arkansas; 6 parishes in Louisiana; 11 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 13, 2023, 2:25 PM CDT for Miller County, Arkansas; 6 parishes in Louisiana; 11 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Jun 13, 2023, 2:25 PM CDT (19:25 UTC)
Expired
Jun 13, 2023, 4:30 PM CDT
In force
2 hr
Issued by
the Storm Prediction Center
Concerning
Severe thunderstorm watch 280

Counties Miller County, AR, Bossier Parish, LA, Caddo Parish, LA, De Soto Parish, LA, Natchitoches Parish, LA, Red River Parish, LA, Webster Parish, LA, Camp County, TX, Cass County, TX, Gregg County, TX, Harrison County, TX, Marion County, TX, Morris County, TX, Panola County, TX, Rusk County, TX, Smith County, TX, Titus County, TX, Upshur County, TX

The radar

The Shreveport radar (KSHV), 53 km from the middle of the area, began a volume at 19:27 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

Shreveport, LA (KSHV), launched 12:00Z, 7.4 hours before the alert went out and 60 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, Shreveport, LA at 12:00Z on 2023-06-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1618 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, Shreveport, LA at 12:00Z on 2023-06-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 167 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
1618 J/kg
Mixed-layer CIN
-97 J/kg
Mixed-layer LCL
592 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
167 m²/s²
0-3 km storm-relative helicity
257 m²/s²
Significant tornado parameter
-0.1
Supercell composite
-1.0

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
Jun 13, 2:52 AM CDTMesoscale DiscussionSPCColumbia, Hempstead, Lafayette, Little River, Miller, Sevier83 min
Jun 13, 3:30 AM CDTSevere Thunderstorm WatchSPCColumbia, Hempstead, Howard, Lafayette, Little River, Miller and 2 more7 hr
Jun 13, 5:39 AM CDTMesoscale DiscussionSPCHoward, Little River, Miller, Sevier96 min
Jun 13, 8:02 AM CDTMesoscale DiscussionSPCAshley, Bradley, Calhoun, Columbia, Hempstead, Howard and 7 more88 min
Jun 13, 9:30 AM CDTMesoscale DiscussionSPCAshley, Bradley, Calhoun, Chicot, Columbia, Drew and 7 more60 min
Jun 13, 12:11 PM CDTSevere Thunderstorm WatchSPCColumbia, Lafayette, Little River, Miller, Union5 hr
Jun 13, 4:43 PM CDTSevere Thunderstorm WatchSPCArkansas, Bradley, Calhoun, Clark, Cleveland, Columbia and 17 more6 hr
Jun 13, 11:22 AM CDTMesoscale DiscussionSPCBienville, Bossier, Caddo, De Soto, Red River, Webster2 hr
Jun 12, 7:49 PM CDTMesoscale DiscussionSPCBell, Bosque, Brown, Burnet, Comanche, Coryell and 7 more86 min
Jun 12, 9:33 PM CDTMesoscale DiscussionSPCBell, Bosque, Burnet, Comanche, Coryell, Erath and 10 more57 min
Jun 13, 1:07 PM CDTMesoscale DiscussionSPCDallam, Hansford, Sherman83 min
Jun 13, 1:30 PM CDTMesoscale DiscussionSPCBosque, Collin, Dallas, Denton, Ellis, Erath and 15 more90 min
Jun 13, 2:00 PM CDTSevere Thunderstorm WatchSPCCollin, Cooke, Dallas, Delta, Denton, Ellis and 17 more6 hr
Jun 13, 2:26 PM CDTSevere Thunderstorm WatchSPCCarson, Dallam, Gray, Hansford, Hartley, Hemphill and 7 more7 hr
Jun 13, 4:04 PM CDTMesoscale DiscussionSPCBosque, Brown, Burnet, Coleman, Comanche, Concho and 11 more86 min
Jun 13, 4:51 PM CDTMesoscale DiscussionSPCCarson, Dallam, Gray, Hansford, Hartley, Hemphill and 7 more84 min
Jun 13, 5:49 PM CDTMesoscale DiscussionSPCCollin, Cooke, Dallas, Delta, Denton, Ellis and 17 more86 min
Jun 13, 6:57 PM CDTMesoscale DiscussionSPCCarson, Gray, Hemphill, Hutchinson, Roberts, Wheeler63 min

Nearby

Mesoscale Discussions in Texas, 2023Mesoscale Discussions in Louisiana, 2023Mesoscale Discussions in Arkansas, 2023Every mesoscale discussion in 2023

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.