Alert archive / Texas / Mesoscale Discussions in 2005

Mesoscale Discussion 1316

June 12, 200520 counties in Oklahoma; 21 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 12, 2005, 5:41 PM CDT for 20 counties in Oklahoma; 21 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Jun 12, 2005, 5:41 PM CDT (22:41 UTC)
Expired
Jun 12, 2005, 7:45 PM CDT
In force
2 hr
Issued by
the Storm Prediction Center
All 41 counties

Caddo County, OK, Canadian County, OK, Cleveland County, OK, Comanche County, OK, Cotton County, OK, Creek County, OK, Garvin County, OK, Grady County, OK, Jackson County, OK, Jefferson County, OK, Kiowa County, OK, Lincoln County, OK, Logan County, OK, McClain County, OK, Okfuskee County, OK, Oklahoma County, OK, Pottawatomie County, OK, Seminole County, OK, Stephens County, OK, Tillman County, OK, Archer County, TX, Baylor County, TX, Clay County, TX, Cottle County, TX, Dickens County, TX, Fisher County, TX, Foard County, TX, Hardeman County, TX, Haskell County, TX, Jones County, TX, Kent County, TX, King County, TX, Knox County, TX, Nolan County, TX, Scurry County, TX, Shackelford County, TX, Stonewall County, TX, Taylor County, TX, Throckmorton County, TX, Wichita County, TX, Wilbarger County, TX

The radar

The Altus AFB radar (KFDR), 35 km from the middle of the area, began a volume at 22:41 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

Norman, OK (KOUN), launched 12:00Z, 10.7 hours before the alert went out and 181 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, Norman, OK at 12:00Z on 2005-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1489 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, Norman, OK at 12:00Z on 2005-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 74 square meters per square second.193958Sfc1 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
1489 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
1069 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
74 m²/s²
0-3 km storm-relative helicity
57 m²/s²
Significant tornado parameter
0.4
Supercell composite
2.1

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
Jun 11, 8:27 PM CDTMesoscale DiscussionSPCAlfalfa, Beckham, Blaine, Custer, Dewey, Ellis and 9 more33 min
Jun 11, 10:11 PM CDTMesoscale DiscussionSPCAlfalfa, Beaver, Beckham, Blaine, Custer, Dewey and 10 more64 min
Jun 12, 5:03 AM CDTMesoscale DiscussionSPCBeaver, Harper, Texas2 hr
Jun 12, 5:30 AM CDTSevere Thunderstorm WatchSPCBeaver, Cimarron, Texas6 hr
Jun 12, 9:03 AM CDTMesoscale DiscussionSPCCotton, Jefferson, Tillman57 min
Jun 12, 10:08 AM CDTMesoscale DiscussionSPCBeckham, Blaine, Canadian, Custer, Dewey, Ellis and 8 more67 min
Jun 12, 11:35 AM CDTMesoscale DiscussionSPCGreer, Harmon85 min
Jun 12, 12:20 PM CDTTornado WatchSPCBeckham, Blaine, Caddo, Comanche, Cotton, Custer and 8 more10 hr
Jun 12, 12:38 PM CDTMesoscale DiscussionSPCGarfield, Kay, Noble, Nowata, Osage, Pawnee and 2 more67 min
Jun 12, 1:20 PM CDTTornado WatchSPCCanadian, Garfield, Grant, Kay, Kingfisher, Logan and 7 more9 hr
Jun 12, 3:02 PM CDTMesoscale DiscussionSPCCraig, Creek, Delaware, Mayes, Ottawa, Rogers and 2 more58 min
Jun 12, 3:29 PM CDTMesoscale DiscussionSPCBeckham, Blaine, Caddo, Comanche, Cotton, Custer and 8 more91 min
Jun 12, 3:47 PM CDTMesoscale DiscussionSPCCimarron, Texas88 min
Jun 12, 6:05 PM CDTTornado WatchSPCAdair, Carter, Cherokee, Cleveland, Creek, Delaware and 20 more5 hr
Jun 12, 6:13 PM CDTMesoscale DiscussionSPCDelaware, Mayes, Ottawa2 hr

Nearby

Mesoscale Discussions in Texas, 2005Mesoscale Discussions in Oklahoma, 2005Every mesoscale discussion in 2005

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.