Alert archive / Texas / Mesoscale Discussions in 2016

Mesoscale Discussion 195

March 9, 2016Beauregard Parish, Calcasieu Parish, Louisiana; 53 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Mar 9, 2016, 7:29 AM CST for Beauregard Parish, Calcasieu Parish, Louisiana; 53 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Mar 9, 2016, 7:29 AM CST (13:29 UTC)
Expired
Mar 9, 2016, 9:30 AM CST
In force
2 hr
Issued by
the Storm Prediction Center
Chance of a watch
60%
All 55 counties

Beauregard Parish, LA, Calcasieu Parish, LA, Angelina County, TX, Aransas County, TX, Austin County, TX, Bee County, TX, Brazoria County, TX, Brooks County, TX, Calhoun County, TX, Chambers County, TX, Colorado County, TX, DeWitt County, TX, Duval County, TX, Fayette County, TX, Fort Bend County, TX, Galveston County, TX, Goliad County, TX, Gonzales County, TX, Grimes County, TX, Hardin County, TX, Harris County, TX, Hidalgo County, TX, Jackson County, TX, Jasper County, TX, Jefferson County, TX, Jim Hogg County, TX, Jim Wells County, TX, Karnes County, TX, Kenedy County, TX, Kleberg County, TX, Lavaca County, TX, Liberty County, TX, Live Oak County, TX, Matagorda County, TX, McMullen County, TX, Montgomery County, TX, Nacogdoches County, TX, Newton County, TX, Nueces County, TX, Orange County, TX, Polk County, TX, Refugio County, TX, Sabine County, TX, San Augustine County, TX, San Jacinto County, TX, San Patricio County, TX, Trinity County, TX, Tyler County, TX, Victoria County, TX, Walker County, TX, Waller County, TX, Washington County, TX, Wharton County, TX, Willacy County, TX, Wilson County, TX

The radar

The Houston radar (KHGX), 144 km from the middle of the area, began a volume at 13:30 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

Corpus Christi, TX (KCRP), launched 12:00Z, 1.5 hours before the alert went out and 150 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 12:00Z on 2016-03-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1989 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 12:00Z on 2016-03-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 116 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
1989 J/kg
Mixed-layer CIN
-73 J/kg
Mixed-layer LCL
647 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
116 m²/s²
0-3 km storm-relative helicity
172 m²/s²
Significant tornado parameter
1.7
Supercell composite
8.3

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 9, 10:07 AM CSTMesoscale DiscussionSPCAllen, Beauregard, Calcasieu, Grant, Rapides, Vernon2 hr
Mar 8, 6:25 PM CSTMesoscale DiscussionSPCBandera, Brooks, Dimmit, Duval, Edwards, Frio and 13 more3 hr
Mar 8, 7:03 PM CSTSevere Thunderstorm WatchSPCAransas, Atascosa, Bandera, Bastrop, Bee, Bexar and 46 more9 hr
Mar 8, 7:07 PM CSTMesoscale DiscussionSPCBosque, Brown, Callahan, Coke, Coleman, Comanche and 37 more113 min
Mar 8, 9:26 PM CSTMesoscale DiscussionSPCAransas, Atascosa, Bandera, Bastrop, Bee, Bell and 44 more2 hr
Mar 8, 11:54 PM CSTMesoscale DiscussionSPCAransas, Atascosa, Austin, Bastrop, Bee, Bell and 63 more2 hr
Mar 9, 3:59 AM CSTMesoscale DiscussionSPCAnderson, Angelina, Austin, Brazos, Burleson, Cherokee and 23 more3 hr
Mar 9, 7:58 AM CSTSevere Thunderstorm WatchSPCAransas, Bee, Brazoria, Calhoun, Fort Bend, Goliad and 8 more4 hr
Mar 9, 10:29 AM CSTMesoscale DiscussionSPCAransas, Brazoria, Calhoun, Fort Bend, Harris, Jackson and 6 more91 min

Nearby

Mesoscale Discussions in Texas, 2016Mesoscale Discussions in Louisiana, 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.