Alert archive / Texas / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 378, NWS Fort Worth, TX

August 15, 2008Kaufman County, Rains County, Van Zandt County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Aug 15, 2008, 4:18 AM CDT for Kaufman County, Rains County, Van Zandt County, Texas. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 15, 2008, 4:18 AM CDT (09:18 UTC)
Expired
Aug 15, 2008, 5:02 AM CDT
In force
44 min
Issued by
NWS Fort Worth, TX
Area
Storm-based polygon

Counties Kaufman County, TX, Rains County, TX, Van Zandt County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 125 km from the middle of the area, began a volume at 09:22 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

Norman, OK (KOUN), launched 00:00Z, 9.3 hours before the alert went out and 312 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 00:00Z on 2008-08-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1268 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 00:00Z on 2008-08-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 57 square meters per square second.19395878Sfc1 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
1268 J/kg
Mixed-layer CIN
-27 J/kg
Mixed-layer LCL
1836 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
57 m²/s²
0-3 km storm-relative helicity
93 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.5

Open this sounding in Storm Lab

The office that day

Everything else NWS Fort Worth, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 14, 11:32 PM CDTSpecial Weather StatementFWDJack, Montague, Young58 min
Aug 15, 2:04 AM CDTSpecial Weather StatementFWDCollin, Dallas, Grayson, Tarrant56 min
Aug 15, 2:39 AM CDTSpecial Weather StatementFWDCollin, Dallas, Ellis, Johnson, Tarrant66 min
Aug 15, 3:15 AM CDTAreal Flood AdvisoryFWDCollin, Dallas, Denton, Rockwall, Tarrant2 hr
Aug 15, 3:38 AM CDTSpecial Weather StatementFWDBosque, Dallas, Ellis, Hill, Hood, Johnson and 5 more67 min
Aug 15, 4:55 AM CDTAreal Flood AdvisoryFWDCollin, Dallas, Denton, Johnson, Parker, Rockwall and 2 more2 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2008Every severe thunderstorm warning 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.