Alert archive / Texas / Rip Current Statements in 2021

Rip Current Statement 28, NWS Houston/Galveston, TX

May 23, 2021Brazoria County, Galveston County, Matagorda County, Texas

NWS Houston/Galveston, TX issued this rip current statement at May 23, 2021, 3:25 AM CDT for Brazoria County, Galveston County, Matagorda County, Texas. It was in force for 16 hr.

The area

The counties it named.

The facts

Issued
May 23, 2021, 3:25 AM CDT (08:25 UTC)
Expired
May 23, 2021, 7:00 PM CDT
In force
16 hr
Issued by
NWS Houston/Galveston, TX

Counties Brazoria County, TX, Galveston County, TX, Matagorda County, TX

The radar

The Houston radar (KHGX), 54 km from the middle of the area, began a volume at 08:27 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

Corpus Christi, TX (KCRP), launched 00:00Z, 8.4 hours before the alert went out and 241 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, Corpus Christi, TX at 00:00Z on 2021-05-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 569 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, Corpus Christi, TX at 00:00Z on 2021-05-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -7 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
569 J/kg
Mixed-layer CIN
-26 J/kg
Mixed-layer LCL
815 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
-7 m²/s²
0-3 km storm-relative helicity
17 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

451 
WHUS44 KHGX 230825
CFWHGX

Coastal Hazard Message
National Weather Service Houston/Galveston TX
325 AM CDT Sun May 23 2021

TXZ436>439-231630-
/O.NEW.KHGX.RP.S.0028.210523T0825Z-210524T0000Z/
/O.CON.KHGX.CF.Y.0009.000000T0000Z-210523T1200Z/
Matagorda Islands-Brazoria Islands-Galveston Island-
Bolivar Peninsula-
325 AM CDT Sun May 23 2021

...HIGH RIP CURRENT RISK IN EFFECT THROUGH THIS EVENING...
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 7 AM CDT THIS
MORNING...

* WHAT...For the Coastal Flood Advisory, minor coastal flooding. 
  For the High Rip Current Risk, dangerous rip currents.

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

* WHEN...For the Coastal Flood Advisory, until 7 AM CDT this 
  morning. For the High Rip Current Risk, through this evening.

* IMPACTS...Flooding of lots, parks, and roads with only 
  isolated road closures expected. Rip currents can sweep even 
  the best swimmers away from shore into deeper water.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.

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.

&&

$$

TXZ214-313-337-338-231200-
/O.CON.KHGX.CF.Y.0009.000000T0000Z-210523T1200Z/
Chambers-Coastal Harris-Coastal Brazoria-Coastal Galveston-
325 AM CDT Sun May 23 2021

...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 7 AM CDT THIS
MORNING...

* WHAT...Minor coastal flooding.

* WHERE...Chambers, Coastal Harris, Coastal Brazoria, Coastal 
  Galveston, Matagorda Islands, Brazoria Islands, Galveston 
  Island and Bolivar Peninsula.

* WHEN...For the Coastal Flood Advisory, from 7 AM Saturday to 7 
  AM CDT Sunday.

* IMPACTS...Flooding of lots, parks, and roads with only 
  isolated road closures expected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.

&&

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 23, 8:32 AM CDTRiver Flood WarningHGXMatagorda, Wharton25 hr
May 23, 3:37 PM CDTRiver Flood WarningHGXAustin, Colorado, Fort Bend, Wharton5 days
May 23, 3:38 PM CDTRiver Flood WarningHGXColorado, Jackson, Wharton3 days

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.