Alert archive / Texas / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 107, NWS Lake Charles, LA

October 21, 2019Hardin County, Jasper County, Tyler County, Texas

NWS Lake Charles, LA issued this severe thunderstorm warning at Oct 21, 2019, 6:54 AM CDT for Hardin County, Jasper County, Tyler County, Texas. It was in force for 38 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
Oct 21, 2019, 6:54 AM CDT (11:54 UTC)
Expired
Oct 21, 2019, 7:32 AM CDT
In force
38 min
Issued by
NWS Lake Charles, LA
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Hardin County, TX, Jasper County, TX, Tyler County, TX

The radar

The Lake Charles radar (KLCH), 114 km from the middle of the area, began a volume at 11:56 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

Shreveport, LA (KSHV), launched 00:00Z, 11.9 hours before the alert went out and 213 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 00:00Z on 2019-10-21Temperature 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, Shreveport, LA at 00:00Z on 2019-10-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 110 square meters per square second.1939587897117Sfc1 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
-12 J/kg
Mixed-layer LCL
1355 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
110 m²/s²
0-3 km storm-relative helicity
184 m²/s²
Significant tornado parameter
0.6
Supercell composite
5.4

Open this sounding in Storm Lab

The office that day

Everything else NWS Lake Charles, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 21, 3:30 AM CDTSmall Craft AdvisoryLCH10 hr
Oct 21, 7:19 AM CDTSpecial Weather StatementLCHVernon41 min
Oct 21, 7:21 AM CDTSpecial Marine WarningLCH54 min
Oct 21, 8:11 AM CDTSpecial Marine WarningLCH49 min
Oct 21, 8:33 AM CDTSpecial Weather StatementLCHCalcasieu42 min
Oct 21, 8:54 AM CDTSevere Thunderstorm WarningLCHCalcasieu27 min
Oct 21, 8:59 AM CDTSpecial Marine WarningLCH46 min
Oct 21, 9:42 AM CDTSpecial Marine WarningLCH63 min
Oct 21, 2:53 PM CDTSmall Craft AdvisoryLCH32 hr
Oct 21, 6:13 AM CDTSpecial Weather StatementLCHJasper47 min
Oct 21, 6:28 AM CDTSevere Thunderstorm WarningLCHJasper, Newton, Tyler62 min
Oct 21, 6:34 AM CDTSpecial Weather StatementLCHJasper41 min
Oct 21, 6:39 AM CDTSpecial Weather StatementLCHHardin, Jasper51 min
Oct 21, 7:54 AM CDTSpecial Weather StatementLCHOrange51 min
Oct 21, 11:19 AM CDTRiver Flood WarningLCHHardin, Jasper, Jefferson, Orange8 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2019Every severe thunderstorm warning in 2019

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.