Alert archive / Texas / Mesoscale Discussions in 2007

Mesoscale Discussion 2086

October 17, 200719 counties in Kansas; 10 counties in Oklahoma; 30 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Oct 17, 2007, 1:12 AM CDT for 19 counties in Kansas; 10 counties in Oklahoma; 30 counties in Texas. It was in force for 93 min.

The area

The outline as issued.

The facts

Issued
Oct 17, 2007, 1:12 AM CDT (06:12 UTC)
Expired
Oct 17, 2007, 2:45 AM CDT
In force
93 min
Issued by
the Storm Prediction Center
All 59 counties

Barber County, KS, Clark County, KS, Comanche County, KS, Edwards County, KS, Finney County, KS, Ford County, KS, Grant County, KS, Gray County, KS, Haskell County, KS, Hodgeman County, KS, Kearny County, KS, Kiowa County, KS, Meade County, KS, Morton County, KS, Pawnee County, KS, Pratt County, KS, Seward County, KS, Stafford County, KS, Stevens County, KS, Beaver County, OK, Beckham County, OK, Dewey County, OK, Ellis County, OK, Harmon County, OK, Harper County, OK, Roger Mills County, OK, Texas County, OK, Woods County, OK, Woodward County, OK, Armstrong County, TX, Briscoe County, TX, Carson County, TX, Castro County, TX, Childress County, TX, Collingsworth County, TX, Crosby County, TX, Donley County, TX, Floyd County, TX, Gray County, TX, Hale County, TX, Hall County, TX, Hansford County, TX, Hemphill County, TX, Hockley County, TX, Hutchinson County, TX, Lamb County, TX, Lipscomb County, TX, Lubbock County, TX, Lynn County, TX, Moore County, TX, Motley County, TX, Ochiltree County, TX, Potter County, TX, Randall County, TX, Roberts County, TX, Sherman County, TX, Swisher County, TX, Terry County, TX, Wheeler County, TX

The radar

The Amarillo radar (KAMA), 88 km from the middle of the area, began a volume at 06:13 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.

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 6.2 hours before the alert went out and 88 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-pSkew-T log-p diagram, Amarillo Airport, TX at 00:00Z on 2007-10-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 234 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Amarillo Airport, TX at 00:00Z on 2007-10-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 86 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
234 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
2083 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
86 m²/s²
0-3 km storm-relative helicity
174 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.5

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.

IssuedProductOfficeCountiesLasted
Oct 17, 1:44 AM CDTSevere Thunderstorm WatchSPCBarber, Clark, Comanche, Edwards, Ellis, Finney and 21 more7 hr
Oct 17, 4:07 AM CDTMesoscale DiscussionSPCAllen, Anderson, Atchison, Bourbon, Brown, Butler and 52 more113 min
Oct 17, 6:50 AM CDTMesoscale DiscussionSPCClark, Comanche, Edwards, Ford, Gray, Hodgeman and 9 more100 min
Oct 17, 10:24 AM CDTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Butler, Chase, Chautauqua and 25 more96 min
Oct 17, 10:43 AM CDTTornado WatchSPCAllen, Anderson, Bourbon, Chautauqua, Cherokee, Coffey and 8 more7 hr
Oct 17, 12:58 PM CDTMesoscale DiscussionSPCBarber, Barton, Clark, Comanche, Edwards, Ellis and 16 more92 min
Oct 17, 2:25 PM CDTTornado WatchSPCBarber, Chautauqua, Cowley, Elk, Harper, Kingman and 4 more8 hr
Oct 17, 2:59 PM CDTSevere Thunderstorm WatchSPCBarton, Cloud, Decatur, Edwards, Ellis, Ellsworth and 21 more7 hr
Oct 17, 5:30 PM CDTTornado WatchSPCBourbon, Cherokee, Crawford6 hr
Oct 17, 5:44 PM CDTMesoscale DiscussionSPCBarton, Cloud, Decatur, Edwards, Ellis, Ellsworth and 22 more61 min
Oct 17, 6:23 PM CDTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Butler, Chase, Chautauqua and 32 more37 min
Oct 16, 10:36 PM CDTMesoscale DiscussionSPCBeckham, Greer, Harmon, Jackson, Roger Mills114 min
Oct 17, 1:36 AM CDTTornado WatchSPCBeckham, Custer, Dewey, Ellis, Greer, Harmon and 7 more7 hr
Oct 17, 6:07 AM CDTMesoscale DiscussionSPCBeckham, Custer, Dewey, Ellis, Greer, Harmon and 7 more113 min
Oct 17, 7:43 AM CDTTornado WatchSPCBlaine, Caddo, Canadian, Carter, Cleveland, Comanche and 33 more7 hr
Oct 17, 1:20 PM CDTMesoscale DiscussionSPCAtoka, Bryan, Cherokee, Choctaw, Coal, Creek and 25 more85 min
Oct 17, 4:31 PM CDTTornado WatchSPCAdair, Cherokee, Craig, Delaware, Haskell, LeFlore and 9 more7 hr
Oct 16, 11:45 PM CDTSevere Thunderstorm WatchSPCArmstrong, Carson, Collingsworth, Donley, Gray, Hansford and 10 more2 hr
Oct 17, 4:41 AM CDTMesoscale DiscussionSPCArcher, Baylor, Borden, Brown, Callahan, Coke and 32 more2 hr
Oct 17, 9:36 AM CDTMesoscale DiscussionSPCJasper, Jefferson, Newton, Orange, Panola, Sabine and 2 more114 min
Oct 17, 11:13 AM CDTTornado WatchSPCAngelina, Bowie, Camp, Cass, Cherokee, Franklin and 21 more7 hr
Oct 17, 2:36 PM CDTMesoscale DiscussionSPCAngelina, Bowie, Camp, Cass, Cherokee, Franklin and 22 more114 min

Nearby

Mesoscale Discussions in Texas, 2007Mesoscale Discussions in Kansas, 2007Mesoscale Discussions in Oklahoma, 2007Every mesoscale discussion in 2007

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.