Alert archive / Texas / Rip Current Statements in 2021

Rip Current Statement 5, NWS Houston/Galveston, TX

March 24, 2021Brazoria County, Galveston County, Matagorda County, Texas

NWS Houston/Galveston, TX issued this rip current statement at Mar 24, 2021, 8:42 AM CDT for Brazoria County, Galveston County, Matagorda County, Texas. It was in force for 13 hr.

The area

The counties it named.

The facts

Issued
Mar 24, 2021, 8:42 AM CDT (13:42 UTC)
Expired
Mar 24, 2021, 10:00 PM CDT
In force
13 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 13:46 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, 1.7 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 2021-03-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1752 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 12:00Z on 2021-03-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 77 square meters per square second.1939587897117Sfc1 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
1752 J/kg
Mixed-layer CIN
-53 J/kg
Mixed-layer LCL
457 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
77 m²/s²
0-3 km storm-relative helicity
92 m²/s²
Significant tornado parameter
0.5
Supercell composite
1.9

Open this sounding in Storm Lab

The text

As transmitted.

362 
WHUS44 KHGX 241342
CFWHGX

Coastal Hazard Message
National Weather Service Houston/Galveston TX
842 AM CDT Wed Mar 24 2021

TXZ436>438-250000-
/O.NEW.KHGX.RP.S.0005.210324T1342Z-210325T0000Z/
Matagorda Islands-Brazoria Islands-
Galveston Island and Bolivar Peninsula-
842 AM CDT Wed Mar 24 2021

...HIGH RIP CURRENT RISK IN EFFECT UNTIL 7 PM CDT THIS EVENING...

* WHAT...Dangerous rip currents.

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

* WHEN...Until 7 PM CDT 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.

&&

$$
3 follow-up statements
804 
WHUS44 KHGX 241922
CFWHGX

Coastal Hazard Message
National Weather Service Houston/Galveston TX
222 PM CDT Wed Mar 24 2021

TXZ438-250300-
/O.NEW.KHGX.CF.Y.0001.210324T1922Z-210325T0300Z/
/O.CON.KHGX.RP.S.0005.000000T0000Z-210325T0000Z/
Galveston Island and Bolivar Peninsula-
222 PM CDT Wed Mar 24 2021

...COASTAL FLOOD ADVISORY IN EFFECT UNTIL 10 PM CDT THIS
EVENING...

...HIGH RIP CURRENT RISK REMAINS IN EFFECT UNTIL 7 PM CDT THIS
EVENING...

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

* WHERE...Galveston Island and the Bolivar Peninsula.

* WHEN...For the Coastal Flood Advisory, until 10 PM CDT this 
  evening. For the High Rip Current Risk, until 7 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...Strong east winds combined with high tide
have produced water levels near 3.4 feet. Water levels are 
expected to drop this evening as tide levels approach low tide 
and winds decrease.

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.

&&

$$

TXZ436-437-250000-
/O.CON.KHGX.RP.S.0005.000000T0000Z-210325T0000Z/
Matagorda Islands-Brazoria Islands-
222 PM CDT Wed Mar 24 2021

...HIGH RIP CURRENT RISK REMAINS IN EFFECT UNTIL 7 PM CDT THIS
EVENING...

* WHAT...Dangerous rip currents.

* WHERE...Brazoria Islands and Matagorda Islands Counties.

* WHEN...Until 7 PM CDT 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.

&&

$$
811 
WHUS44 KHGX 242036
CFWHGX

Coastal Hazard Message
National Weather Service Houston/Galveston TX
336 PM CDT Wed Mar 24 2021

TXZ438-250300-
/O.EXT.KHGX.RP.S.0005.000000T0000Z-210325T0300Z/
/O.CON.KHGX.CF.Y.0001.000000T0000Z-210325T0300Z/
Galveston Island and Bolivar Peninsula-
336 PM CDT Wed Mar 24 2021

...HIGH RIP CURRENT RISK NOW IN EFFECT UNTIL 10 PM CDT THIS
EVENING...

...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT THIS
EVENING...

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

* WHERE...Galveston Island and the Bolivar Peninsula.

* WHEN...Until 10 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.


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.

&&

$$

TXZ436-437-250300-
/O.EXT.KHGX.RP.S.0005.000000T0000Z-210325T0300Z/
Matagorda Islands-Brazoria Islands-
336 PM CDT Wed Mar 24 2021

...HIGH RIP CURRENT RISK NOW IN EFFECT UNTIL 10 PM CDT THIS
EVENING...

* WHAT...Dangerous rip currents.

* WHERE...Brazoria Islands and Matagorda Islands Counties.

* WHEN...Until 10 PM CDT 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.

&&

$$
060 
WHUS44 KHGX 250321
CFWHGX

Coastal Hazard Message
National Weather Service Houston/Galveston TX
1021 PM CDT Wed Mar 24 2021

TXZ438-251130-
/O.EXP.KHGX.CF.Y.0001.000000T0000Z-210325T0300Z/
/O.EXP.KHGX.RP.S.0005.000000T0000Z-210325T0300Z/
/O.NEW.KHGX.CF.Y.0002.210325T0321Z-210325T1500Z/
/O.NEW.KHGX.RP.S.0006.210325T0321Z-210325T1500Z/
Galveston Island and Bolivar Peninsula-
1021 PM CDT Wed Mar 24 2021

...COASTAL FLOOD ADVISORY IN EFFECT UNTIL 10 AM CDT THURSDAY...
...HIGH RIP CURRENT RISK IN EFFECT UNTIL 10 AM CDT THURSDAY...

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

* WHERE...Galveston Island and Bolivar Peninsula.

* WHEN...Until 10 AM CDT Thursday.

* 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.

&&

$$

TXZ436-437-251130-
/O.EXP.KHGX.RP.S.0005.000000T0000Z-210325T0300Z/
/O.NEW.KHGX.RP.S.0006.210325T0321Z-210325T1500Z/
Matagorda Islands-Brazoria Islands-
1021 PM CDT Wed Mar 24 2021

...HIGH RIP CURRENT RISK IN EFFECT UNTIL 10 AM CDT THURSDAY...

* WHAT...Dangerous rip currents.

* WHERE...Matagorda Islands and Brazoria Islands Counties.

* WHEN...Until 10 AM CDT Thursday.

* 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.

&&

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 24, 12:28 PM CDTSmall Craft AdvisoryHGX10 hr
Mar 24, 2:22 PM CDTCoastal Flood AdvisoryHGXGalveston8 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.