Alert archive / Texas / Mesoscale Discussions in 2007

Mesoscale Discussion 1287

June 26, 2007Bryan County, Love County, Marshall County, Oklahoma; 19 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 26, 2007, 4:44 PM CDT for Bryan County, Love County, Marshall County, Oklahoma; 19 counties in Texas. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
Jun 26, 2007, 4:44 PM CDT (21:44 UTC)
Expired
Jun 26, 2007, 7:15 PM CDT
In force
3 hr
Issued by
the Storm Prediction Center
All 22 counties

Bryan County, OK, Love County, OK, Marshall County, OK, Bosque County, TX, Collin County, TX, Comanche County, TX, Dallas County, TX, Denton County, TX, Eastland County, TX, Ellis County, TX, Erath County, TX, Fannin County, TX, Grayson County, TX, Hamilton County, TX, Hill County, TX, Hood County, TX, Hunt County, TX, Johnson County, TX, Kaufman County, TX, Rockwall County, TX, Somervell County, TX, Tarrant County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 34 km from the middle of the area, began a volume at 21:47 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 nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 9.7 hours before the alert went out and 7 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 2007-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 841 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 2007-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 57 square meters per square second.1939Sfc1 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
841 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
636 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
57 m²/s²
0-3 km storm-relative helicity
102 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 26, 2:48 PM CDTMesoscale DiscussionSPCCimarron, Texas87 min
Jun 26, 3:31 PM CDTSevere Thunderstorm WatchSPCCimarron, Texas7 hr
Jun 26, 5:55 PM CDTMesoscale DiscussionSPCCimarron, Texas2 hr
Jun 26, 1:08 AM CDTMesoscale DiscussionSPCBell, Bosque, Burnet, Collin, Coryell, Dallas and 20 more97 min
Jun 26, 6:07 PM CDTSevere Thunderstorm WatchSPCAndrews, Bailey, Borden, Briscoe, Castro, Cochran and 29 more9 hr

Nearby

Mesoscale Discussions in Texas, 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.