Alert archive / Texas / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 5, NWS Fort Worth, TX

February 6, 2018Hill County, Limestone County, McLennan County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Feb 6, 2018, 2:30 PM CST for Hill County, Limestone County, McLennan County, Texas. It was in force for 30 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
Feb 6, 2018, 2:30 PM CST (20:30 UTC)
Expired
Feb 6, 2018, 3:00 PM CST
In force
30 min
Issued by
NWS Fort Worth, TX
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

Counties Hill County, TX, Limestone County, TX, McLennan County, TX

The nearest sounding before it

Shreveport, LA (KBAD), launched 12:00Z, 8.5 hours before the alert went out and 316 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, Shreveport, LA at 12:00Z on 2018-02-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLEL10008507005003002001001 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, Shreveport, LA at 12:00Z on 2018-02-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 140 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
498 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
140 m²/s²
0-3 km storm-relative helicity
155 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 6, 3:41 AM CSTWinter Weather AdvisoryFWDCollin, Cooke, Denton, Eastland, Fannin, Grayson and 7 more22 hr
Feb 6, 1:56 PM CSTSpecial Weather StatementFWDVan Zandt34 min
Feb 6, 2:18 PM CSTSpecial Weather StatementFWDMcLennan27 min
Feb 6, 2:26 PM CSTSpecial Weather StatementFWDLimestone34 min
Feb 6, 2:36 PM CSTSpecial Weather StatementFWDHenderson24 min
Feb 6, 2:52 PM CSTSpecial Weather StatementFWDFreestone23 min
Feb 6, 3:16 PM CSTSpecial Weather StatementFWDHenderson29 min
Feb 6, 3:48 PM CSTSpecial Weather StatementFWDHenderson27 min
Feb 6, 4:23 PM CSTSpecial Weather StatementFWDEllis52 min
Feb 6, 5:11 PM CSTSpecial Weather StatementFWDDenton34 min

Nearby

Severe Thunderstorm Warnings in Texas, 2018Every severe thunderstorm warning in 2018

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.