Alert archive / Texas / Rip Current Statements in 2018

Rip Current Statement 19, NWS Houston/Galveston, TX

June 22, 2018Brazoria County, Galveston County, Texas

NWS Houston/Galveston, TX issued this rip current statement at Jun 22, 2018, 9:21 AM CDT for Brazoria County, Galveston County, Texas. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued
Jun 22, 2018, 9:21 AM CDT (14:21 UTC)
Expired
Jun 22, 2018, 9:00 PM CDT
In force
12 hr
Issued by
NWS Houston/Galveston, TX

Counties Brazoria County, TX, Galveston County, TX

The radar

The Houston radar (KHGX), 27 km from the middle of the area, began a volume at 14:18 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

Lake Charles Mun, LA (KLCH), launched 12:00Z, 2.4 hours before the alert went out and 210 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, Lake Charles Mun, LA at 12:00Z on 2018-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1454 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, Lake Charles Mun, LA at 12:00Z on 2018-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -14 square meters per square second.1939Sfc1 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
1454 J/kg
Mixed-layer CIN
-68 J/kg
Mixed-layer LCL
802 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
-14 m²/s²
0-3 km storm-relative helicity
28 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.7

Open this sounding in Storm Lab

The text

As transmitted.

286 
WHUS44 KHGX 221421
CFWHGX

Coastal Hazard Message
National Weather Service Houston/Galveston TX
921 AM CDT Fri Jun 22 2018

...High Risk of Rip Currents Today...

.Galveston Island Beach Patrol is reporting strong rip currents and 
longshore currents along area beaches. Beachgoers should make sure 
to swim near a lifeguard if entering the water.

TXZ437-438-230200-
/O.NEW.KHGX.RP.S.0019.180622T1421Z-180623T0200Z/
Brazoria Islands-Galveston Island and Bolivar Peninsula-
921 AM CDT Fri Jun 22 2018

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

The National Weather Service in Houston/Galveston has issued a
High Rip Current Risk, which is in effect until 9 PM CDT this
evening. 

* TIMING...through this evening.

* IMPACTS...Hazardous swimming conditions at Gulf-facing 
  beaches, especially near piers, jetties, and rock groins. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

There is a high risk of rip currents. Life threatening rip
currents are likely in the surf zone.
               
Rip currents are powerful channels of water flowing quickly away
from shore...which occur most often at low spots or breaks in the
sandbar and in the vicinity of structures such as groins...
jetties and piers. Heed the advice of lifeguards...beach patrol...
flags and signs. Swim near a lifeguard.
               
If you become caught in a rip current...yell for help. Remain
calm...do not exhaust yourself and stay afloat while waiting for
help. If you have to swim out of a rip current...swim parallel to
shore and back toward the beach when possible. Do not attempt to
swim directly against a rip current as you will tire quickly.

&&

$$

Nearby

Rip Current Statements in Texas, 2018Every rip current statement in 2018

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.