Alert archive / Texas / Mesoscale Discussions in 2005

Mesoscale Discussion 467

March 31, 2005Miller County, Arkansas; 34 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Mar 31, 2005, 7:07 PM CST for Miller County, Arkansas; 34 counties in Texas. It was in force for 113 min.

The area

The outline as issued.

The facts

Issued: Mar 31, 2005, 7:07 PM CST (01:07 UTC)
Expired: Mar 31, 2005, 9:00 PM CST
In force: 113 min
Issued by: the Storm Prediction Center

All 35 counties

Miller County, AR, Anderson County, TX, Bowie County, TX, Camp County, TX, Cass County, TX, Cherokee County, TX, Delta County, TX, Franklin County, TX, Freestone County, TX, Gregg County, TX, Harrison County, TX, Henderson County, TX, Hopkins County, TX, Houston County, TX, Lamar County, TX, Leon County, TX, Limestone County, TX, Madison County, TX, Marion County, TX, Milam County, TX, Morris County, TX, Nacogdoches County, TX, Navarro County, TX, Panola County, TX, Polk County, TX, Rains County, TX, Red River County, TX, Robertson County, TX, Rusk County, TX, Smith County, TX, Titus County, TX, Trinity County, TX, Upshur County, TX, Van Zandt County, TX, Wood County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 146 km from the middle of the area, began a volume at 01:11 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, 1.1 hours before the alert went out and 158 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 3306 m above ground
0-6 km bulk shear: 78 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: 183 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.

Issued	Product	Office	Counties	Lasted
Mar 31, 6:49 PM CST	Mesoscale Discussion	SPC	Jasper, Newton, Orange, Sabine, San Augustine, Shelby	56 min
Mar 31, 7:05 PM CST	Severe Thunderstorm Watch	SPC	Angelina, Jasper, Newton, Sabine, San Augustine, Shelby and 1 more	5 hr
Mar 31, 8:25 PM CST	Mesoscale Discussion	SPC	Austin, Brazos, Burleson, Chambers, Colorado, Fayette and 11 more	65 min
Mar 31, 8:45 PM CST	Severe Thunderstorm Watch	SPC	Austin, Brazoria, Chambers, Fort Bend, Galveston, Grimes and 11 more	7 hr
Mar 31, 9:27 PM CST	Mesoscale Discussion	SPC	Angelina, Jasper, Newton, Panola, Sabine, San Augustine and 2 more	63 min
Mar 31, 10:53 PM CST	Mesoscale Discussion	SPC	Angelina, Jasper, Newton, Polk, Sabine, San Augustine and 2 more	67 min
Apr 1, 12:25 AM CST	Mesoscale Discussion	SPC	Hardin, Jefferson, Liberty, Orange	95 min

Nearby

Mesoscale Discussions in Texas, 2005 Mesoscale Discussions in Arkansas, 2005 Every mesoscale discussion in 2005

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.