A 500mb shortwave trough worked from northwest to southeast from the Texas Big Bend through Deep South Texas and the Rio Grande Valley, bringing a cold front through the region. The Storm Prediction Center (SPC) forecasted an Enhanced Risk of severe weather for all of Deep South Texas and the Rio Grande Valley for April 23rd. While hail was a potential threat, damaging winds were the highlight of the event as the squall line raced from north to south across the region. Following the squall line, a strong wake low formed and lasted for a few hours the afternoon of April 23rd and contributed to a coastal flooding event and a capsized boat in the Laguna Madre near Port Isabel and some dock damage in Port Mansfield.

Flood in CAMERON, TEXAS
From 23-APR-23 12:40:00 to 23-APR-23 13:30:00 (CST-6)
Location: PORT ISABEL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Several members of the public posted images of Padre Blvd on South Padre Island covered in one to two feet of water. One picture showed the water halfway up the wheels of a car near the Grapevine Cafe. The cause of this was the squall line that moved through early in the afternoon of April 23rd.

Thunderstorm Wind in CAMERON, TEXAS
From 23-APR-23 12:15:00 to 23-APR-23 12:20:00 (CST-6)
Location: LOS FRESNOS
Magnitude: 65.00 EG
Property damage: 150.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

An NWS Storm Survey conducted the evening of April 23rd found wind damage consistent with 65 to 75 mph wind gusts between Los Fresnos to Bayview along and north of Old Port Road. Some of the strongest winds were found near along Calle Hermosa where a large pine tree trunk was split. Also, a metal roof of the parish hall at St. Cecilia Church in Los Fresnos was blown off a strewn across W Ocean Blvd. Another cluster of wind damage was reported in and around Bayview with several tree limbs down along North San Roman Road. A large tree was uprooted on South San Roman n Road at the intersection of E Toronja Road. Several other tree limbs were downed along North San Roman Road up to Schafer Road.

Thunderstorm Wind in CAMERON, TEXAS
From 23-APR-23 12:28:00 to 23-APR-23 12:40:00 (CST-6)
Location: PORT BROWNSVILLE
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: NWS Employee

An NWS Employee reported two power poles blown over along Ruben Torres Blvd, just west of Oscar Dancy, across the street from Bella Vista Apartments. Time estimated by report of power outage by another NWS employee and radar.

Thunderstorm Wind in CAMERON, TEXAS
From 23-APR-23 12:42:00 to 23-APR-23 12:48:00 (CST-6)
Location: PORT ISABEL
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A palm tree was blown down in front of the Port Isabel Lighthouse and fell across Highway 100, blocking most of the west bound lanes. Time was estimated by radar and the 57 mph gust at Port Isabel's NOAA National Ocean Service site (PTIT2) about 0.6 miles away.

Thunderstorm Wind in WILLACY, TEXAS
From 23-APR-23 11:25:00 to 23-APR-23 11:35:00 (CST-6)
Location: RAYMONDVILLE
Magnitude: 61.00 EG
Property damage: 40.00K
Crop damage: 0.00K
Reported by: Social Media

Pictures from the Raymondville area of Willacy County showed damage from a line from south of HWY 186 and S 1st Street to a quarter mile north of the Raymondville Country Club along S 7th Street. Some of the pictures included a part of a wood roof peeled back from a porch on W Gem Street and some gate and metal roof damage to a garage along S 7th Street. There was also a video shared from the Holiday Inn Express near the intersection of US-77/I-69E and HWY 186 looking to the southwest showing a large gust front blowing through Raymondville in the areas mentioned above. A closer inspection of the video shows some debris lofted into the air and was used a guide for the estimated 70 mph wind gusts. The time is based on the video and radar.

Thunderstorm Wind in CAMERON, TEXAS
From 23-APR-23 12:36:00 to 23-APR-23 13:15:00 (CST-6)
Location: PORT ISABEL
Magnitude: 53.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

Powerlines and traffic lights were downed at the intersection of Highway 100 and Padre Blvd on South Padre Island. Additional images from social media show the sign for the Coral Reef Lounge that had fallen on top of a Camaro. Time approximated based on radar and time report was received.

Thunderstorm Wind in CAMERON, TEXAS
From 23-APR-23 12:38:00 to 23-APR-23 12:38:00 (CST-6)
Location: PORT ISABEL ARPT
Magnitude: 59.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The ASOS at Port Isabel-Cameron County Airport (KPIL) recorded at wind gust of 59 knots, or 68 mph, at 1:38PM CDT.

Thunderstorm Wind in CAMERON, TEXAS
From 23-APR-23 12:47:00 to 23-APR-23 12:47:00 (CST-6)
Location: (BRO)BROWNSVILLE ARP
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The ASOS at Brownsville-South Padre Island International Airport (KBRO) recorded a wind gust of 51 knots, or 59 mph, at 1:47PM CDT.

Coastal Flood in COASTAL CAMERON, TEXAS
From 23-APR-23 12:42:00 to 23-APR-23 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: C-MAN Station

High northeasterly winds, associated with a wake low developing behind a thunderstorm complex, contributed to enhanced northeasterly swell which led to coastal flooding across portions of Coastal Cameron County on the afternoon of April 23rd. Water levels topped out at 2.68ft above normally dry ground around 2:30PM CDT in the Port Isabel area. Other high water levels measured included 2.32ft above normally dry ground at SPI Brazos Santiago, and 2.32ft above normally high ground at the South Padre Island Coast Guard Station. These highest levels occurred generally between 2PM CDT and 6:00PM CDT.  Several docks and a boat sustained damage from the Gale-force to Storm-force wind gusts and pounding waves associated with the event.  Dollar damages for boats are estimated and provided in a separate episode for Marine High Wind.

Coastal Flood in COASTAL WILLACY, TEXAS
From 23-APR-23 11:54:00 to 23-APR-23 15:36:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: C-MAN Station

High northeasterly winds, associated with a wake low developing behind a thunderstorm complex, contributed to enhanced northeasterly swell which led to coastal flooding across portions of Coastal Willacy County on the afternoon of April 23rd. Water levels topped out at 2.38ft above mean sea level (an estimated for water levels above normally dry ground) around 2:12PM CDT in the Port Mansfield area. Pictures from the Emergency Manager in Port Mansfield shows portions of docks damaged or washed away.

Thunderstorm Wind in HIDALGO, TEXAS
From 23-APR-23 12:02:00 to 23-APR-23 12:02:00 (CST-6)
Location: (MFE)MILLER INTL ARP
Magnitude: 59.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The McAllen-Miller International Airport (KMFE) ASOS recorded a wind gust of 59 knots, or 68 mph, at 1:02PM CDT.

Thunderstorm Wind in CAMERON, TEXAS
From 23-APR-23 12:03:00 to 23-APR-23 12:03:00 (CST-6)
Location: (HRL)RIO GRANDE ARPT
Magnitude: 53.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The ASOS at Valley International Airport (KHRL) in Harlingen recorded a wind gust of 53 knots, or 61 mph, at 1:02PM CDT.

Thunderstorm Wind in CAMERON, TEXAS
From 23-APR-23 12:05:00 to 23-APR-23 12:10:00 (CST-6)
Location: RIO HONDO
Magnitude: 61.00 EG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A storm survey conducted by NWS personal found wind damage consistent with wind gusts of 60 to 70 mph. Several softwood trees were found with broke branches from Rio Hondo to about 1.5 miles east of Rio Hondo along General Brant Road. There were also several buildings with damage, including loss of wood or metal roof panels on some outbuildings and mobile homes. This includes most of an aluminum roofing covering two adjacent single-wide mobile homes blew off. At least two of these pieces were blown across adjacent State Highway 106.