Alert archive / Texas / Rip Current Statements in 2021

Rip Current Statement 19, NWS Houston/Galveston, TX

April 26, 2021Brazoria County, Galveston County, Matagorda County, Texas

NWS Houston/Galveston, TX issued this rip current statement at Apr 26, 2021, 10:28 AM CDT for Brazoria County, Galveston County, Matagorda County, Texas. It was in force for 11 hr.

The area

The counties it named.

The facts

Issued
Apr 26, 2021, 10:28 AM CDT (15:28 UTC)
Expired
Apr 26, 2021, 9:00 PM CDT
In force
11 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 15:28 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 12:00Z, 3.5 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 12:00Z on 2021-04-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 5 joules per kilogram.LCLEL10008507005003002001001 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 12:00Z on 2021-04-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 41 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
5 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
582 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
41 m²/s²
0-3 km storm-relative helicity
86 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

932 
WHUS44 KHGX 261528
CFWHGX

Coastal Hazard Message
National Weather Service Houston/Galveston TX
1028 AM CDT Mon Apr 26 2021

TXZ436>439-262330-
/O.NEW.KHGX.RP.S.0019.210426T1528Z-210427T0200Z/
Matagorda Islands-Brazoria Islands-Galveston Island-
Bolivar Peninsula-
1028 AM CDT Mon Apr 26 2021

...HIGH RIP CURRENT RISK IN EFFECT UNTIL 9 PM CDT THIS EVENING...

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

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

* WHEN...Until 9 PM CDT this evening.

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

* ADDITIONAL DETAILS...The Galveston Island Beach Patrol continues 
  to report strong rip current activity this morning and has posted
  red flags.

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.

&&

$$
1 follow-up statement
150 
WHUS44 KHGX 262022
CFWHGX

Coastal Hazard Message
National Weather Service Houston/Galveston TX
322 PM CDT Mon Apr 26 2021

TXZ436>439-270430-
/O.NEW.KHGX.CF.Y.0004.210427T0700Z-210427T1400Z/
/O.CON.KHGX.RP.S.0019.000000T0000Z-210427T0200Z/
Matagorda Islands-Brazoria Islands-Galveston Island-
Bolivar Peninsula-
322 PM CDT Mon Apr 26 2021

...HIGH RIP CURRENT RISK REMAINS IN EFFECT UNTIL 9 PM CDT THIS
EVENING...
...COASTAL FLOOD ADVISORY IN EFFECT FROM 2 AM TO 9 AM CDT
TUESDAY...

* WHAT...For the Coastal Flood Advisory, minor coastal flooding 
  expected. 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, during high tide from 
  2 AM to 9 AM CDT Tuesday. For the High Rip Current Risk, until 
  9 PM CDT 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.

* ADDITIONAL DETAILS...For the Coastal Flood Advisory, water may 
  approach the Blue Water Highway near Surfside Beach, Highway 
  87 along Bolivar Peninsula, and parts of the seawall on Galveston
  Island.

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.

&&

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 26, 3:22 PM CDTCoastal Flood AdvisoryHGXBrazoria, Galveston, Matagorda18 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.