Alert archive / Texas / Rip Current Statements in 2017

Rip Current Statement 9, NWS Houston/Galveston, TX

July 24, 2017Brazoria County, Chambers County, Galveston County, Texas

NWS Houston/Galveston, TX issued this rip current statement at Jul 24, 2017, 8:59 AM CDT for Brazoria County, Chambers County, Galveston County, Texas. It was in force for 14 hr.

The area

The counties it named.

The facts

Issued
Jul 24, 2017, 8:59 AM CDT (13:59 UTC)
Expired
Jul 24, 2017, 11:00 PM CDT
In force
14 hr
Issued by
NWS Houston/Galveston, TX

Counties Brazoria County, TX, Chambers County, TX, Galveston County, TX

The radar

The Houston radar (KHGX), 14 km from the middle of the area, began a volume at 13:58 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, 2.0 hours before the alert went out and 189 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 2017-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2568 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, Lake Charles Mun, LA at 12:00Z on 2017-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -4 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
2568 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
744 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
-4 m²/s²
0-3 km storm-relative helicity
54 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

449 
WHUS44 KHGX 241359
CFWHGX

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
859 AM CDT MON JUL 24 2017

...HIGH RIP CURRENT RISK IN EFFECT THROUGH THIS EVENING...

.GALVESTON ISLAND BEACH PATROL HAS REPORTED A HIGH RISK OF RIP 
CURRENTS AND HAS RED FLAGS POSTED. BEACH GOERS ARE ADVISED TO 
FOLLOW THE GUIDANCE OF LOCAL BEACH PATROLS. IF YOU DO SWIM, SWIM 
NEAR A LIFE GAURD AND AWAY FROM ANY JETTIES OR PIERS.

TXZ214-237-238-250400-
/O.NEW.KHGX.RP.S.0009.170724T1359Z-170725T0400Z/
BRAZORIA-CHAMBERS-GALVESTON-
859 AM CDT MON JUL 24 2017

...HIGH RIP CURRENT RISK IN EFFECT THROUGH THIS EVENING...

THE NATIONAL WEATHER SERVICE IN HOUSTON/GALVESTON HAS ISSUED A
HIGH RIP CURRENT RISK, WHICH IS IN EFFECT THROUGH THIS EVENING. 

* TIMING...THIS MORNING THROUGH 11PM TONIGHT.

* IMPACTS...LIFE THREATENING RIP CURRENTS ARE LIKELY IN THE SURF ZONE.

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.

&&

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 23, 8:39 PM CDTSevere Thunderstorm WarningHGXHouston36 min
Jul 24, 4:11 AM CDTAreal Flood AdvisoryHGXHouston, Trinity3 hr
Jul 24, 4:36 AM CDTFlash Flood WarningHGXHouston, Trinity3 hr
Jul 24, 5:25 AM CDTAreal Flood AdvisoryHGXHouston, Polk, San Jacinto, Trinity, Walker3 hr
Jul 24, 7:13 AM CDTFlash Flood WarningHGXHouston, Polk, San Jacinto, Trinity3 hr
Jul 24, 7:28 AM CDTAreal Flood AdvisoryHGXHouston2 hr
Jul 24, 9:38 AM CDTAreal Flood AdvisoryHGXHouston, Polk, San Jacinto, Trinity2 hr
Jul 24, 11:47 AM CDTAreal Flood AdvisoryHGXHouston, Polk, San Jacinto, Trinity58 min

Nearby

Rip Current Statements in Texas, 2017Every rip current statement in 2017

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.