Alert archive / Texas / Special Weather Statements in 2021

Special Weather Statement, NWS Houston/Galveston, TX

December 6, 2021Brazos County, Burleson County, Washington County, Texas

NWS Houston/Galveston, TX issued this special weather statement at Dec 6, 2021, 10:09 AM CST for Brazos County, Burleson County, Washington County, Texas. It was in force for 21 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Dec 6, 2021, 10:09 AM CST (16:09 UTC)
Expired
Dec 6, 2021, 10:30 AM CST
In force
21 min
Issued by
NWS Houston/Galveston, TX
Hail
0.00 in
Wind
30

Counties Brazos County, TX, Burleson County, TX, Washington County, TX

The radar

The Ft Hood radar (KGRK), 86 km from the middle of the area, began a volume at 16:11 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

Lake Charles Mun, LA (KLCH), launched 12:00Z, 4.2 hours before the alert went out and 334 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, Lake Charles Mun, LA at 12:00Z on 2021-12-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1185 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, Lake Charles Mun, LA at 12:00Z on 2021-12-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 134 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
1185 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
725 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
134 m²/s²
0-3 km storm-relative helicity
186 m²/s²
Significant tornado parameter
0.8
Supercell composite
7.2

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Houston/Galveston, TX wrote its last area forecast discussion before this special weather statement went out at Dec 6, 5:24 AM CST, 4 hours 45 minutes earlier.

Area forecast discussion, Dec 6, 5:24 AM CST, 4 hours 45 minutes before
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In the hours before

Special weather statement, Dec 6, 6:09 AM CST, 4 hours before
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Special weather statement, Dec 6, 10:09 AM CST, 0 minutes before
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The office that day

Everything else NWS Houston/Galveston, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 6, 3:28 AM CSTSmall Craft AdvisoryHGX24 hr
Dec 6, 6:09 AM CSTSpecial Weather StatementHGXLiberty36 min
Dec 6, 6:20 AM CSTTornado WarningHGXLiberty25 min
Dec 6, 12:05 PM CSTSpecial Weather StatementHGXFort Bend, Harris, Liberty, Wharton70 min

Nearby

Special Weather Statements in Texas, 2021Every special weather statement in 2021

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.