Alert archive / Texas / Rip Current Statements in 2020

Rip Current Statement 15, NWS Houston/Galveston, TX

May 16, 2020Brazoria County, Galveston County, Matagorda County, Texas

NWS Houston/Galveston, TX issued this rip current statement at May 16, 2020, 11:55 AM CDT for Brazoria County, Galveston County, Matagorda County, Texas. It was in force for 10 hr.

The area

The counties it named.

The facts

Issued
May 16, 2020, 11:55 AM CDT (16:55 UTC)
Expired
May 16, 2020, 10:00 PM CDT
In force
10 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 16:58 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, 4.9 hours before the alert went out and 243 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 2020-05-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1558 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°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 2020-05-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 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
1558 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
500 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
77 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

730 
WHUS44 KHGX 161655
CFWHGX

Coastal Hazard Message
National Weather Service Houston/Galveston TX
1155 AM CDT Sat May 16 2020

TXZ436>438-170100-
/O.NEW.KHGX.RP.S.0015.200516T1655Z-200517T0300Z/
Matagorda Islands-Brazoria Islands-
Galveston Island and Bolivar Peninsula-
1155 AM CDT Sat May 16 2020

...HIGH RIP CURRENT RISK IN EFFECT UNTIL 10 PM CDT THIS EVENING...

* WHAT...Dangerous rip currents.

* WHERE...Matagorda Islands, Brazoria Islands and Galveston 
  Island and Bolivar Peninsula Counties.

* WHEN...Until 10 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 and away from rocks, jetties and piers. 
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.

IssuedProductOfficeCountiesLasted
May 15, 7:17 PM CDTAreal Flood AdvisoryHGXBrazoria, Matagorda, Wharton118 min
May 15, 8:08 PM CDTAreal Flood AdvisoryHGXBrazoria, Galveston52 min
May 15, 11:34 PM CDTSpecial Marine WarningHGX41 min
May 16, 1:00 AM CDTSpecial Weather StatementHGXAustin, Brazos, Burleson, Colorado, Jackson, Washington60 min
May 16, 1:25 AM CDTSevere Thunderstorm WarningHGXColorado, Jackson, Wharton50 min
May 16, 1:33 AM CDTSevere Thunderstorm WarningHGXJackson, Wharton42 min
May 16, 1:40 AM CDTSpecial Marine WarningHGX95 min
May 16, 2:09 AM CDTSevere Thunderstorm WarningHGXFort Bend, Wharton36 min
May 16, 2:10 AM CDTSpecial Weather StatementHGXFort Bend, Matagorda, Wharton65 min
May 16, 2:27 AM CDTSevere Thunderstorm WarningHGXAustin, Fort Bend, Wharton33 min
May 16, 2:32 AM CDTSevere Thunderstorm WarningHGXMatagorda28 min
May 16, 2:41 AM CDTSevere Thunderstorm WarningHGXBrazoria, Fort Bend, Wharton23 min
May 16, 2:44 AM CDTSevere Thunderstorm WarningHGXMatagorda, Wharton16 min
May 16, 2:52 AM CDTSevere Thunderstorm WarningHGXFort Bend23 min
May 16, 2:58 AM CDTSevere Thunderstorm WarningHGXBrazoria, Matagorda32 min
May 16, 3:02 AM CDTSevere Thunderstorm WarningHGXFort Bend, Harris28 min
May 16, 3:21 AM CDTSpecial Marine WarningHGX84 min
May 16, 3:27 AM CDTSpecial Weather StatementHGXHarris48 min
May 16, 3:58 AM CDTSpecial Marine WarningHGX92 min
May 16, 4:41 AM CDTSpecial Marine WarningHGX64 min
May 16, 5:33 AM CDTSpecial Marine WarningHGX57 min
May 16, 5:49 AM CDTSpecial Marine WarningHGX56 min
May 16, 10:59 AM CDTAreal Flood AdvisoryHGXBrazos, Grimes, Madison, Walker2 hr

Nearby

Rip Current Statements in Texas, 2020Every rip current statement in 2020

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.