Alert archive / Texas / Rip Current Statements in 2021
Rip Current Statement 20, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this rip current statement at Apr 28, 2021, 8:50 AM CDT for Brazoria County, Galveston County, Matagorda County, Texas. It was in force for 34 hr.
The area
The counties it named.
The facts
- Issued
- Apr 28, 2021, 8:50 AM CDT (13:50 UTC)
- Expired
- Apr 29, 2021, 7:00 PM CDT
- In force
- 34 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 13:53 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, 1.8 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.
- Mixed-layer CAPE
- 409 J/kg
- Mixed-layer CIN
- -407 J/kg
- Mixed-layer LCL
- 538 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 144 m²/s²
- 0-3 km storm-relative helicity
- 294 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
568 WHUS44 KHGX 281350 CFWHGX Coastal Hazard Message National Weather Service Houston/Galveston TX 850 AM CDT Wed Apr 28 2021 TXZ436>439-290000- /O.NEW.KHGX.RP.S.0020.210428T1350Z-210429T0000Z/ /O.CON.KHGX.CF.Y.0005.000000T0000Z-210428T2300Z/ Matagorda Islands-Brazoria Islands-Galveston Island- Bolivar Peninsula- 850 AM CDT Wed Apr 28 2021 ...HIGH RIP CURRENT RISK IN EFFECT UNTIL 7 PM CDT THIS EVENING... ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 6 PM CDT THIS EVENING... * 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 6 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. 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. && $$
4 follow-up statements
678 WHUS44 KHGX 282021 CFWHGX Coastal Hazard Message National Weather Service Houston/Galveston TX 321 PM CDT Wed Apr 28 2021 TXZ436>439-291100- /O.EXT.KHGX.RP.S.0020.000000T0000Z-210430T0000Z/ /O.CON.KHGX.CF.Y.0005.000000T0000Z-210428T2300Z/ Matagorda Islands-Brazoria Islands-Galveston Island- Bolivar Peninsula- 321 PM CDT Wed Apr 28 2021 ...HIGH RIP CURRENT RISK NOW IN EFFECT THROUGH THURSDAY EVENING... ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 6 PM CDT THIS EVENING... * WHAT...For the Coastal Flood Advisory, minor coastal flooding. For the High Rip Current Risk, dangerous rip currents. * WHERE...Brazoria Islands, Matagorda Islands, Bolivar Peninsula and Galveston Island Counties. * WHEN...For the Coastal Flood Advisory, until 6 PM CDT this evening. For the High Rip Current Risk, through Thursday evening. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. Rip currents can sweep even the best swimmers away from shore into deeper water. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. Swim near a lifeguard. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help. && $$
282 WHUS44 KHGX 290307 CFWHGX Coastal Hazard Message National Weather Service Houston/Galveston TX 1007 PM CDT Wed Apr 28 2021 TXZ436>439-291115- /O.CON.KHGX.RP.S.0020.000000T0000Z-210430T0000Z/ Matagorda Islands-Brazoria Islands-Galveston Island- Bolivar Peninsula- 1007 PM CDT Wed Apr 28 2021 ...HIGH RIP CURRENT RISK REMAINS IN EFFECT THROUGH THURSDAY EVENING... * WHAT...Dangerous rip currents. * WHERE...Brazoria Islands, Matagorda Islands, Bolivar Peninsula and Galveston Island Counties. * WHEN...Through Thursday evening. * IMPACTS...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. && $$
795 WHUS44 KHGX 291219 CFWHGX Coastal Hazard Message National Weather Service Houston/Galveston TX 719 AM CDT Thu Apr 29 2021 TXZ436>439-292030- /O.CON.KHGX.RP.S.0020.000000T0000Z-210430T0000Z/ Matagorda Islands-Brazoria Islands-Galveston Island- Bolivar Peninsula- 719 AM CDT Thu Apr 29 2021 ...HIGH RIP CURRENT RISK REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... * WHAT...Dangerous rip currents. * WHERE...Brazoria Islands, Matagorda Islands, Bolivar Peninsula and Galveston Island Counties. * WHEN...Through Thursday evening. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water. PRECAUTIONARY/PREPAREDNESS ACTIONS... Swim near a lifeguard. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help. && $$
409 WHUS44 KHGX 292035 CFWHGX Coastal Hazard Message National Weather Service Houston/Galveston TX 335 PM CDT Thu Apr 29 2021 TXZ436>439-300000- /O.CON.KHGX.RP.S.0020.000000T0000Z-210430T0000Z/ Matagorda Islands-Brazoria Islands-Galveston Island- Bolivar Peninsula- 335 PM CDT Thu Apr 29 2021 ...HIGH RIP CURRENT RISK REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... * WHAT...Dangerous rip currents. * WHERE...Brazoria Islands, Matagorda Islands, Bolivar Peninsula and Galveston Island 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. && $$
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 28, 4:42 AM CDT | Wind Advisory | HGX | Austin, Brazoria, Brazos, Burleson, Colorado, Fort Bend and 9 more | 14 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.