Alert archive / Texas / Rip Current Statements in 2021

Rip Current Statement 56, NWS Houston/Galveston, TX

October 24, 2021Brazoria County, Galveston County, Texas

NWS Houston/Galveston, TX issued this rip current statement at Oct 24, 2021, 9:53 AM CDT for Brazoria County, Galveston County, Texas. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued
Oct 24, 2021, 9:53 AM CDT (14:53 UTC)
Expired
Oct 24, 2021, 10:00 PM CDT
In force
12 hr
Issued by
NWS Houston/Galveston, TX

Counties Brazoria County, TX, Galveston County, TX

The radar

The Houston radar (KHGX), 27 km from the middle of the area, began a volume at 14:56 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

Lake Charles Mun, LA (KLCH), launched 12:00Z, 2.9 hours before the alert went out and 210 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 2021-10-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 20 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°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 2021-10-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 22 square meters per square second.193958Sfc1 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
20 J/kg
Mixed-layer CIN
-137 J/kg
Mixed-layer LCL
1396 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
22 m²/s²
0-3 km storm-relative helicity
56 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

065 
WHUS44 KHGX 241453
CFWHGX

Coastal Hazard Message
National Weather Service Houston/Galveston TX
953 AM CDT Sun Oct 24 2021

TXZ437>439-242300-
/O.NEW.KHGX.RP.S.0056.211024T1453Z-211025T0300Z/
Brazoria Islands-Galveston Island-Bolivar Peninsula-
953 AM CDT Sun Oct 24 2021

...HIGH RIP CURRENT RISK IN EFFECT THROUGH THIS EVENING...

* WHAT...Dangerous rip currents along Gulf-facing beaches.

* WHERE...Brazoria Islands, Galveston Island and Bolivar 
  Peninsula.

* WHEN...Through this evening.

* IMPACTS...Rip currents can sweep even the best swimmers away 
  from shore into deeper water.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Swim near a lifeguard. If caught in a rip current, relax and
float. Don't swim against the current. If able, swim in a
direction following the shoreline. If unable to escape, face the
shore and call or wave for help.

&&

$$

Cady

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 23, 7:10 PM CDTSpecial Weather StatementHGXChambers, Galveston35 min
Oct 23, 7:40 PM CDTSpecial Weather StatementHGXChambers35 min
Oct 23, 8:12 PM CDTSpecial Weather StatementHGXLiberty33 min
Oct 23, 11:45 PM CDTSmall Craft AdvisoryHGX10 hr

Nearby

Rip Current Statements in Texas, 2021Every rip current 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.