Alert archive / Texas / Mesoscale Discussions in 2008

Mesoscale Discussion 328

March 3, 200815 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Mar 3, 2008, 3:24 AM CST for 15 counties in Texas. It was in force for 96 min.

The area

The outline as issued.

The facts

Issued: Mar 3, 2008, 3:24 AM CST (09:24 UTC)
Expired: Mar 3, 2008, 5:00 AM CST
In force: 96 min
Issued by: the Storm Prediction Center

Counties Bastrop County, TX, Blanco County, TX, Brazos County, TX, Burleson County, TX, Burnet County, TX, Grimes County, TX, Lee County, TX, Llano County, TX, Madison County, TX, Milam County, TX, San Saba County, TX, Travis County, TX, Walker County, TX, Washington County, TX, Williamson County, TX

The radar

The Ft Hood radar (KGRK), 15 km from the middle of the area, began a volume at 09:24 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.

Severe Thunderstorm Watch 90Mar 3, 6:50 AM CST

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 9.4 hours before the alert went out and 233 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: 1534 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 836 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 210 m²/s²
0-3 km storm-relative helicity: 335 m²/s²
Significant tornado parameter: 2.3
Supercell composite: 10.5

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 2, 6:05 PM CST	Tornado Watch	SPC	Bosque, Callahan, Collin, Comanche, Cooke, Dallas and 28 more	8 hr
Mar 2, 8:01 PM CST	Mesoscale Discussion	SPC	Collin, Delta, Fannin, Franklin, Grayson, Hopkins and 4 more	59 min
Mar 2, 8:23 PM CST	Tornado Watch	SPC	Bowie, Camp, Cass, Franklin, Morris, Red River and 3 more	8 hr
Mar 2, 11:04 PM CST	Mesoscale Discussion	SPC	Brown, Callahan, Coke, Coleman, Comanche, Concho and 12 more	56 min
Mar 2, 11:27 PM CST	Severe Thunderstorm Watch	SPC	Brown, Coke, Coleman, Concho, Crockett, Irion and 13 more	5 hr
Mar 3, 1:36 AM CST	Mesoscale Discussion	SPC	Anderson, Bell, Bosque, Bowie, Burnet, Camp and 31 more	54 min
Mar 3, 1:57 AM CST	Tornado Watch	SPC	Anderson, Bell, Bosque, Collin, Comanche, Coryell and 26 more	6 hr
Mar 3, 3:01 AM CST	Mesoscale Discussion	SPC	Bowie, Camp, Cass, Franklin, Harrison, Marion and 4 more	89 min
Mar 3, 5:21 AM CST	Mesoscale Discussion	SPC	Anderson, Angelina, Bowie, Brazos, Burleson, Camp and 28 more	84 min
Mar 3, 6:47 AM CST	Severe Thunderstorm Watch	SPC	Angelina, Austin, Bowie, Brazoria, Brazos, Burleson and 43 more	6 hr
Mar 3, 10:18 AM CST	Mesoscale Discussion	SPC	Angelina, Austin, Bowie, Brazoria, Brazos, Burleson and 43 more	87 min
Mar 3, 10:36 AM CST	Tornado Watch	SPC	Hardin, Jasper, Jefferson, Newton, Orange, Sabine and 3 more	9 hr

Nearby

Mesoscale Discussions in Texas, 2008 Every mesoscale discussion in 2008

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.