Alert archive / Texas / Mesoscale Discussions in 2008

Mesoscale Discussion 606

April 9, 2008Jackson County, Oklahoma; 19 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Apr 9, 2008, 6:12 PM CDT for Jackson County, Oklahoma; 19 counties in Texas. It was in force for 63 min.

The area

The outline as issued.

The facts

Issued: Apr 9, 2008, 6:12 PM CDT (23:12 UTC)
Expired: Apr 9, 2008, 7:15 PM CDT
In force: 63 min
Issued by: the Storm Prediction Center

Counties Jackson County, OK, Briscoe County, TX, Childress County, TX, Cottle County, TX, Crosby County, TX, Dickens County, TX, Floyd County, TX, Foard County, TX, Garza County, TX, Hale County, TX, Hall County, TX, Hardeman County, TX, Hockley County, TX, Kent County, TX, King County, TX, Lamb County, TX, Lubbock County, TX, Lynn County, TX, Motley County, TX, Terry County, TX

The radar

The Lubbock radar (KLBB), 73 km from the middle of the area, began a volume at 23:15 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 181Apr 9, 6:55 PM CDT

The nearest sounding before it

Midland Regional, TX (KMAF), launched 12:00Z, 11.2 hours before the alert went out and 232 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: 23 J/kg
Mixed-layer CIN: -289 J/kg
Mixed-layer LCL: 636 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: 580 m²/s²
0-3 km storm-relative helicity: 675 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 10.2

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
Apr 8, 10:36 PM CDT	Mesoscale Discussion	SPC	McCurtain	84 min
Apr 8, 11:51 PM CDT	Severe Thunderstorm Watch	SPC	McCurtain	5 hr
Apr 9, 3:29 AM CDT	Mesoscale Discussion	SPC	McCurtain	61 min
Apr 9, 9:06 AM CDT	Mesoscale Discussion	SPC	Beckham, Blaine, Caddo, Comanche, Cotton, Custer and 9 more	54 min
Apr 9, 9:35 AM CDT	Severe Thunderstorm Watch	SPC	Beckham, Caddo, Comanche, Cotton, Custer, Grady and 9 more	6 hr
Apr 9, 12:24 PM CDT	Mesoscale Discussion	SPC	Atoka, Beckham, Blaine, Bryan, Caddo, Canadian and 29 more	66 min
Apr 9, 3:07 PM CDT	Mesoscale Discussion	SPC	Blaine, Caddo, Canadian, Cleveland, Comanche, Cotton and 25 more	53 min
Apr 9, 3:33 PM CDT	Mesoscale Discussion	SPC	Atoka, Bryan, Carter, Choctaw, Coal, Johnston and 5 more	27 min
Apr 9, 3:48 PM CDT	Tornado Watch PDS	SPC	Atoka, Bryan, Carter, Choctaw, Coal, Johnston and 6 more	7 hr
Apr 9, 5:38 PM CDT	Tornado Watch	SPC	Adair, Cherokee, Delaware, Haskell, Hughes, Latimer and 11 more	5 hr
Apr 9, 6:55 PM CDT	Severe Thunderstorm Watch	SPC	Caddo, Canadian, Cleveland, Comanche, Cotton, Garvin and 15 more	8 hr
Apr 8, 7:33 PM CDT	Mesoscale Discussion	SPC	Bowie, Camp, Cass, Franklin, Gregg, Harrison and 6 more	117 min
Apr 8, 8:06 PM CDT	Mesoscale Discussion	SPC	Bell, Bosque, Burnet, Coryell, Ellis, Falls and 16 more	114 min
Apr 8, 8:48 PM CDT	Tornado Watch	SPC	Bell, Burnet, Coryell, Falls, Gillespie, Kimble and 11 more	2 hr
Apr 9, 6:00 AM CDT	Mesoscale Discussion	SPC	Armstrong, Bailey, Briscoe, Castro, Childress, Cochran and 22 more	60 min
Apr 9, 6:27 AM CDT	Severe Thunderstorm Watch	SPC	Andrews, Armstrong, Bailey, Borden, Briscoe, Carson and 36 more	8 hr
Apr 9, 12:46 PM CDT	Mesoscale Discussion	SPC	Bosque, Brown, Callahan, Coke, Coleman, Comanche and 41 more	59 min
Apr 9, 1:20 PM CDT	Tornado Watch PDS	SPC	Bosque, Brown, Callahan, Coke, Coleman, Comanche and 40 more	7 hr
Apr 9, 4:01 PM CDT	Mesoscale Discussion	SPC	Cass, Harrison, Marion	59 min
Apr 9, 5:12 PM CDT	Mesoscale Discussion	SPC	Archer, Baylor, Bell, Borden, Bosque, Brown and 51 more	63 min
Apr 9, 6:59 PM CDT	Mesoscale Discussion	SPC	Brown, Callahan, Coke, Coleman, Comanche, Concho and 34 more	61 min

Nearby

Mesoscale Discussions in Texas, 2008 Mesoscale Discussions in Oklahoma, 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.