Alert archive / Texas / Mesoscale Discussions in 2010

Mesoscale Discussion 596

May 17, 201029 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 17, 2010, 4:42 PM CDT for 29 counties in Texas. It was in force for 63 min.

The area

The outline as issued.

The facts

Issued: May 17, 2010, 4:42 PM CDT (21:42 UTC)
Expired: May 17, 2010, 5:45 PM CDT
In force: 63 min
Issued by: the Storm Prediction Center

All 29 counties

Anderson County, TX, Bell County, TX, Blanco County, TX, Burnet County, TX, Coryell County, TX, Falls County, TX, Freestone County, TX, Gillespie County, TX, Henderson County, TX, Hill County, TX, Kaufman County, TX, Kerr County, TX, Kimble County, TX, Lampasas County, TX, Leon County, TX, Limestone County, TX, Llano County, TX, Mason County, TX, McCulloch County, TX, McLennan County, TX, Menard County, TX, Milam County, TX, Navarro County, TX, Robertson County, TX, San Saba County, TX, Schleicher County, TX, Sutton County, TX, Van Zandt County, TX, Williamson County, TX

The radar

The Ft Hood radar (KGRK), 97 km from the middle of the area, began a volume at 21:43 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 182May 17, 5:00 PM CDT

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 9.7 hours before the alert went out and 206 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: 1818 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 1010 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 56 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.7

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
May 16, 8:24 PM CDT	Mesoscale Discussion	SPC	Baylor, Briscoe, Childress, Cottle, Crosby, Dickens and 18 more	66 min
May 17, 10:16 AM CDT	Mesoscale Discussion	SPC	Brown, Callahan, Coleman, Comanche, Dickens, Eastland and 13 more	59 min
May 17, 10:44 AM CDT	Severe Thunderstorm Watch	SPC	Borden, Brown, Callahan, Coke, Coleman, Comanche and 30 more	7 hr
May 17, 1:19 PM CDT	Mesoscale Discussion	SPC	Crane, Crockett, Ector, Loving, Pecos, Reeves and 4 more	86 min
May 17, 1:34 PM CDT	Mesoscale Discussion	SPC	Angelina, Bell, Brazos, Burleson, Falls, Grimes and 16 more	56 min
May 17, 1:35 PM CDT	Mesoscale Discussion	SPC	Bosque, Brown, Burnet, Callahan, Coke, Coleman and 34 more	85 min
May 17, 2:37 PM CDT	Severe Thunderstorm Watch	SPC	Andrews, Brewster, Crane, Culberson, Ector, Gaines and 12 more	7 hr
May 17, 2:45 PM CDT	Mesoscale Discussion	SPC	Dallam, Hartley, Oldham	2 hr
May 17, 5:00 PM CDT	Severe Thunderstorm Watch	SPC	Anderson, Austin, Bandera, Bastrop, Bell, Bexar and 60 more	7 hr
May 17, 5:53 PM CDT	Mesoscale Discussion	SPC	Andrews, Brewster, Crane, Culberson, Ector, Gaines and 9 more	67 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.