Alert archive / Texas / Winter Storm Watches in 2021

Winter Storm Watch 1, NWS Houston/Galveston, TX

January 8, 20218 counties in Texas

NWS Houston/Galveston, TX issued this winter storm watch at Jan 8, 2021, 2:20 PM CST for 8 counties in Texas. It took effect at Jan 10, 2021, 12:00 PM CST. It was in force for .

The area

The counties it named.

The facts

Issued
Jan 8, 2021, 2:20 PM CST (20:20 UTC)
In effect from
Jan 10, 2021, 12:00 PM CST
Expired
Jan 9, 2021, 2:34 PM CST
In force
Issued by
NWS Houston/Galveston, TX

Counties Brazos County, TX, Burleson County, TX, Grimes County, TX, Houston County, TX, Madison County, TX, Trinity County, TX, Walker County, TX, Washington County, TX

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 8.3 hours before the alert went out and 265 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 2021-01-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 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, Fort Worth, TX at 12:00Z on 2021-01-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -54 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
1 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
724 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
-54 m²/s²
0-3 km storm-relative helicity
-4 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this winter storm watch 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 winter storm watch went out at Jan 8, 4:51 AM CST, 9 hours 29 minutes earlier.

Area forecast discussion, Jan 8, 4:51 AM CST, 9 hours 29 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jan 8, 2:06 AM CSTLow Water AdvisoryHGX37 hr

Nearby

Winter Storm Watches in Texas, 2021Every winter storm watch 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.