Alert archive / Texas / Rip Current Statements in 2017

Rip Current Statement 4, NWS Houston/Galveston, TX

May 28, 20174 counties in Texas

NWS Houston/Galveston, TX issued this rip current statement at May 28, 2017, 9:19 AM CDT for 4 counties in Texas. It was in force for 15 hr.

The area

The counties it named.

The facts

Issued
May 28, 2017, 9:19 AM CDT (14:19 UTC)
Expired
May 29, 2017, 12:00 AM CDT
In force
15 hr
Issued by
NWS Houston/Galveston, TX

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

The radar

The Houston radar (KHGX), 30 km from the middle of the area, began a volume at 14:20 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, 2.3 hours before the alert went out and 219 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 2017-05-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3612 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 2017-05-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 58 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
3612 J/kg
Mixed-layer CIN
-37 J/kg
Mixed-layer LCL
517 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
58 m²/s²
0-3 km storm-relative helicity
87 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

531 
WHUS44 KHGX 281419
CFWHGX

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
919 AM CDT SUN MAY 28 2017

...POTENTIAL FOR STRONG RIP CURRENTS THROUGH SUNDAY NIGHT...

.A MODERATE ONSHORE FLOW WILL PRODUCE STRONG RIP CURRENTS ALONG
AREA BEACHES TODAY. THE ROUGH SURF AND POTENTIAL RIP CURRENTS WILL 
PRODUCE DANGEROUS SWIMMING CONDITIONS. SWIM NEAR A LIFEGUARD AND 
AWAY FROM STRUCTURES SUCH AS JETTIES AND PIERS.

TXZ214-236>238-282230-
/O.NEW.KHGX.RP.S.0004.170528T1419Z-170529T0500Z/
BRAZORIA-CHAMBERS-GALVESTON-MATAGORDA-
919 AM CDT SUN MAY 28 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...THROUGH THIS EVENING

* IMPACTS...UPPER TEXAS COASTLINE

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
May 28, 5:43 PM CDTSpecial Weather StatementHGXHouston47 min
May 28, 5:53 PM CDTSevere Thunderstorm WarningHGXHouston37 min
May 28, 6:28 PM CDTSpecial Weather StatementHGXHouston47 min
May 28, 6:42 PM CDTSpecial Weather StatementHGXBrazos, Burleson, Grimes48 min
May 28, 6:42 PM CDTSevere Thunderstorm WarningHGXHouston48 min
May 28, 6:57 PM CDTSevere Thunderstorm WarningHGXBrazos, Burleson, Grimes, Madison33 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.