Alert archive / Texas / Coastal Flood Statements in 2021

Coastal Flood Statement 3, NWS Brownsville, TX

April 20, 2021Kenedy County, Texas

NWS Brownsville, TX issued this coastal flood statement at Apr 20, 2021, 2:39 AM CDT for Kenedy County, Texas. It took effect at Apr 20, 2021, 11:00 AM CDT. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Apr 20, 2021, 2:39 AM CDT (07:39 UTC)
In effect from
Apr 20, 2021, 11:00 AM CDT
Expired
Apr 20, 2021, 3:05 PM CDT
In force
4 hr
Issued by
NWS Brownsville, TX

County Kenedy County, TX

The radar

The Corpus Christi radar (KCRP), 96 km from the middle of the area, began a volume at 07:44 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, 7.7 hours before the alert went out and 94 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, Corpus Christi, TX at 00:00Z on 2021-04-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLEL10008507005003002001001 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, Corpus Christi, TX at 00:00Z on 2021-04-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -20 square meters per square second.1939587897117Sfc1 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
1 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
1005 m above ground
0-6 km bulk shear
82 kt
0-1 km storm-relative helicity
-20 m²/s²
0-3 km storm-relative helicity
105 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

065 
WHUS44 KBRO 200739
CFWBRO

Coastal Hazard Message
National Weather Service Brownsville TX
239 AM CDT Tue Apr 20 2021

TXZ256-257-351-202100-
/O.NEW.KBRO.CF.S.0003.210420T1600Z-210420T2100Z/
Coastal Willacy-Coastal Cameron-Coastal Kenedy-
239 AM CDT Tue Apr 20 2021

* WHAT...Isolated minor coastal flooding expected.

* WHERE...Coastal Kenedy, Coastal Cameron and Coastal Willacy 
  Counties.

* WHEN...From 11 AM CDT this morning through this afternoon.

* IMPACTS...Wave run-up may approach the dunes along narrow 
  beaches. Beach equipment, such as umbrellas and chairs, could 
  be moved by waves. Vehicles driving along narrow beaches may 
  experience higher water levels. Elevated water levels may also 
  occur across the Laguna Madre and South Bay, and along State 
  Highway 4 west of Boca Chica State Park.

* ADDITIONAL DETAILS...Isolated minor coastal flooding will be
  most likely around high tide this afternoon, which will occur at
  2:24 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not drive through flooded roadways.

&&

$$
1 follow-up statement
757 
WHUS44 KBRO 202005
CFWBRO

Coastal Hazard Message
National Weather Service Brownsville TX
Issued by National Weather Service San Juan PR
305 PM CDT Tue Apr 20 2021

TXZ256-257-351-202115-
/O.CAN.KBRO.CF.S.0003.000000T0000Z-210420T2100Z/
Coastal Willacy-Coastal Cameron-Coastal Kenedy-
305 PM CDT Tue Apr 20 2021

Isolated minor coastal flooding and wave run-up is no longer
expected, and therefore the coastal flood statement is cancelled.

$$

Nearby

Coastal Flood Statements in Texas, 2021Every coastal flood 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.