Alert archive / Texas / Mesoscale Discussions in 2008

Mesoscale Discussion 159

February 5, 20087 counties in Oklahoma; 29 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Feb 5, 2008, 2:15 PM CST for 7 counties in Oklahoma; 29 counties in Texas. It was in force for 90 min.

The area

The outline as issued.

The facts

Issued
Feb 5, 2008, 2:15 PM CST (20:15 UTC)
Expired
Feb 5, 2008, 3:45 PM CST
In force
90 min
Issued by
the Storm Prediction Center
All 36 counties

Atoka County, OK, Bryan County, OK, Choctaw County, OK, Haskell County, OK, Latimer County, OK, McCurtain County, OK, Pushmataha County, OK, Anderson County, TX, Bowie County, TX, Camp County, TX, Cass County, TX, Collin County, TX, Dallas County, TX, Delta County, TX, Ellis County, TX, Fannin County, TX, Franklin County, TX, Freestone County, TX, Gregg County, TX, Henderson County, TX, Hopkins County, TX, Hunt County, TX, Kaufman County, TX, Lamar County, TX, Limestone County, TX, McLennan County, TX, Morris County, TX, Navarro County, TX, Rains County, TX, Red River County, TX, Rockwall County, TX, Smith County, TX, Titus County, TX, Upshur County, TX, Van Zandt County, TX, Wood County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 180 km from the middle of the area, began a volume at 20:18 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

Fort Worth, TX (KFWD), launched 12:00Z, 8.3 hours before the alert went out and 168 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, Fort Worth, TX at 12:00Z on 2008-02-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 711 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, Fort Worth, TX at 12:00Z on 2008-02-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 271 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
711 J/kg
Mixed-layer CIN
-245 J/kg
Mixed-layer LCL
1028 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
271 m²/s²
0-3 km storm-relative helicity
369 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

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
Feb 4, 7:48 PM CSTMesoscale DiscussionSPCCraig, Creek, Delaware, Lincoln, Mayes, Nowata and 6 more87 min
Feb 5, 2:31 AM CSTMesoscale DiscussionSPCBeckham, Blaine, Caddo, Canadian, Cleveland, Comanche and 24 more2 hr
Feb 5, 5:03 AM CSTMesoscale DiscussionSPCAtoka, Bryan, Carter, Cherokee, Choctaw, Cleveland and 37 more117 min
Feb 5, 6:39 AM CSTMesoscale DiscussionSPCAdair, LeFlore, Sequoyah3 hr
Feb 5, 10:18 AM CSTMesoscale DiscussionSPCAdair, Atoka, Cherokee, Coal, Delaware, Haskell and 13 more87 min
Feb 5, 11:56 AM CSTTornado WatchSPCAtoka, Bryan, Choctaw, Haskell, Latimer, LeFlore and 4 more7 hr
Feb 5, 3:17 PM CSTMesoscale DiscussionSPCLeFlore, McCurtain88 min
Feb 5, 2:00 AM CSTMesoscale DiscussionSPCBandera, Blanco, Bosque, Brown, Burnet, Callahan and 40 more3 hr
Feb 5, 2:28 AM CSTSevere Thunderstorm WatchSPCBell, Bosque, Collin, Comanche, Cooke, Coryell and 36 more6 hr
Feb 5, 11:16 AM CSTMesoscale DiscussionSPCBowie, Camp, Cass, Franklin, Gregg, Harrison and 14 more89 min
Feb 5, 3:59 PM CSTSevere Thunderstorm WatchSPCAnderson, Angelina, Cherokee, Gregg, Harrison, Leon and 7 more4 hr
Feb 5, 5:54 PM CSTMesoscale DiscussionSPCAustin, Brazoria, Chambers, Colorado, Fort Bend, Galveston and 14 more96 min

Nearby

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