Alert archive / Texas / Rip Current Statements in 2021
Rip Current Statement 47, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this rip current statement at Aug 22, 2021, 3:21 AM CDT for Brazoria County, Galveston County, Matagorda County, Texas. It took effect at Aug 22, 2021, 7:00 AM CDT. It was in force for 13 hr.
The area
The counties it named.
The facts
- Issued
- Aug 22, 2021, 3:21 AM CDT (08:21 UTC)
- In effect from
- Aug 22, 2021, 7:00 AM CDT
- Expired
- Aug 22, 2021, 8:00 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 08:26 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.
- Mixed-layer CAPE
- 1694 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 1116 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -2 m²/s²
- 0-3 km storm-relative helicity
- 20 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
876 WHUS44 KHGX 220821 CFWHGX Coastal Hazard Message National Weather Service Houston/Galveston TX 321 AM CDT Sun Aug 22 2021 TXZ436>439-230100- /O.NEW.KHGX.RP.S.0047.210822T1200Z-210823T0100Z/ Matagorda Islands-Brazoria Islands-Galveston Island- Bolivar Peninsula- 321 AM CDT Sun Aug 22 2021 ...HIGH RIP CURRENT RISK IN EFFECT FROM 7 AM CDT THIS MORNING THROUGH THIS EVENING... * WHAT...Dangerous rip currents expected. * WHERE...Matagorda Islands, Brazoria Islands, Galveston Island and Bolivar Peninsula Counties. * WHEN...From 7 AM CDT this morning 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. && $$
1 follow-up statement
384 WHUS44 KHGX 230047 CFWHGX Coastal Hazard Message National Weather Service Houston/Galveston TX 747 PM CDT Sun Aug 22 2021 TXZ436>439-230200- /O.EXP.KHGX.RP.S.0047.000000T0000Z-210823T0100Z/ Matagorda Islands-Brazoria Islands-Galveston Island- Bolivar Peninsula- 747 PM CDT Sun Aug 22 2021 ...HIGH RIP CURRENT RISK WILL EXPIRE AT 8 PM CDT THIS EVENING... The rip current risk has been lowered to MODERATE for the rest of the night. Swimmers are urged to exercise caution and monitor beach flags/conditions as models suggest another period of HIGH risk of rip currents for Monday. $$
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 21, 8:58 PM CDT | Small Craft Advisory | HGX | 6 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.