Alert archive / Texas / Mesoscale Discussions in 2010

Mesoscale Discussion 76

January 28, 201025 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jan 28, 2010, 2:36 PM CST for 25 counties in Texas. It was in force for 84 min.

The area

The outline as issued.

The facts

Issued: Jan 28, 2010, 2:36 PM CST (20:36 UTC)
Expired: Jan 28, 2010, 4:00 PM CST
In force: 84 min
Issued by: the Storm Prediction Center

All 25 counties

Bosque County, TX, Collin County, TX, Coryell County, TX, Dallas County, TX, Delta County, TX, Denton County, TX, Ellis County, TX, Franklin County, TX, Freestone County, TX, Henderson County, TX, Hill County, TX, Hopkins County, TX, Hunt County, TX, Johnson County, TX, Kaufman County, TX, Limestone County, TX, McLennan County, TX, Navarro County, TX, Rains County, TX, Rockwall County, TX, Smith County, TX, Tarrant County, TX, Upshur County, TX, Van Zandt County, TX, Wood County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 70 km from the middle of the area, began a volume at 20:37 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 13Jan 28, 2:40 PM CST

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 8.6 hours before the alert went out and 76 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: 2 J/kg
Mixed-layer CIN: -175 J/kg
Mixed-layer LCL: 535 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 91 m²/s²
0-3 km storm-relative helicity: 98 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
Jan 28, 12:22 AM CST	Mesoscale Discussion	SPC	Armstrong, Bailey, Briscoe, Carson, Castro, Childress and 24 more	6 hr
Jan 28, 5:05 AM CST	Mesoscale Discussion	SPC	Andrews, Borden, Brewster, Coke, Crane, Crockett and 25 more	2 hr
Jan 28, 7:01 AM CST	Mesoscale Discussion	SPC	Armstrong, Bailey, Briscoe, Carson, Castro, Childress and 27 more	5 hr
Jan 28, 9:52 AM CST	Mesoscale Discussion	SPC	Concho, Edwards, Gillespie, Kerr, Kimble, Llano and 9 more	83 min
Jan 28, 10:48 AM CST	Mesoscale Discussion	SPC	Hansford, Lipscomb, Ochiltree, Sherman	5 hr
Jan 28, 1:47 PM CST	Mesoscale Discussion	SPC	Edwards, Kimble, Kinney, Maverick, Menard, Real and 4 more	118 min
Jan 28, 2:39 PM CST	Severe Thunderstorm Watch	SPC	Bosque, Coryell, Dallas, Ellis, Hamilton, Hill and 11 more	4 hr
Jan 28, 3:15 PM CST	Tornado Watch	SPC	Bandera, Blanco, Burnet, Concho, Edwards, Gillespie and 14 more	7 hr
Jan 28, 5:06 PM CST	Mesoscale Discussion	SPC	Coryell, Ellis, Falls, Hamilton, Hill, Kaufman and 6 more	114 min

Nearby

Mesoscale Discussions in Texas, 2010 Every mesoscale discussion in 2010

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.