A squall line that originated along and east of the Sierra Madre during the pre-dawn hours of April 7 rolled across the Rio Grande Valley and Deep South Texas during the early morning, then continued across the Lower Texas Gulf waters through mid to late morning, producing dozens of minutes of gale force gusts from Laguna Madre through the waters beyond 20 nautical miles offshore.

Marine Thunderstorm Wind in LAGUNA MADRE FROM 5NM N OF PT MANSFIELD TO BAFFIN BAY TX, GULF OF MEXICO
From 07-APR-19 07:54:00 to 07-APR-19 08:24:00 (CST-6)
Location: ARROYO CITY
Magnitude: 40.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: C-MAN Station

The Texas Coastal Ocean Observing Network (TCOON) site at Rincon del San Jose reported a peak gust of nearly 40 knots at 8 AM CST, part of a 30 minute stretch of Gale force gusts associated with a east-moving squall line.

Marine Thunderstorm Wind in LAGUNA MADRE FROM PORT OF BROWNSVILLE TO ARROYO COLORADO, GULF OF MEXICO
From 07-APR-19 09:54:00 to 07-APR-19 10:00:00 (CST-6)
Location: ARROYO CITY
Magnitude: 38.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: C-MAN Station

The Texas Coastal Ocean Observing Network (TCOON) site at Realitos Peninsula reported a peak gust of nearly 38 knots at 10 AM CST, part of a 6 minute stretch of Gale force gusts associated with the back side of a squall line that had exited the coast about an hour earlier.

Marine Thunderstorm Wind in COASTAL WATERS FROM PT MANSFIELD TO RIO GRANDE RIVER TX OUT 20NM, GULF OF MEXICO
From 07-APR-19 09:24:00 to 07-APR-19 09:30:00 (CST-6)
Location: SOUTH PADRE ISLAND
Magnitude: 39.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: C-MAN Station

The Texas Coastal Ocean Observing Network (TCOON) site at Brazos Santiago reported a peak gust of 39 knots at 930 AM CST, part of a 6 minute stretch of Gale force gusts associated with an eastward moving squall line that had exited the coast about an hour earlier.  Note that Brazos Santiago is about 200 yards inshore, and used as a proxy for the Gulf waters just beyond the surf zone.

Marine Thunderstorm Wind in WATERS FROM BAFFIN BAY TO PT MANSFIELD TX EXT FROM 20 TO 60NM, GULF OF MEXICO
From 07-APR-19 09:00:00 to 07-APR-19 10:10:00 (CST-6)
Location: S BAFFIN BAY
Magnitude: 41.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

NOAA Buoy 42020 reported prolonged period of Gale force gusts associated with an eastward moving squall line and mesoscale effects, such as wake low and high pressure.  Peak gust was measured at 41 knots at 930 AM CST.

Marine Thunderstorm Wind in LAGUNA MADRE FROM PORT OF BROWNSVILLE TO ARROYO COLORADO, GULF OF MEXICO
From 07-APR-19 08:54:00 to 07-APR-19 09:18:00 (CST-6)
Location: ARROYO CITY
Magnitude: 49.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: C-MAN Station

The Texas Coastal Ocean Observing Network (TCOON) site at Realitos Peninsula reported a peak gust of nearly 39 knots at 9 AM CST, part of a 24 minute stretch of Gale force gusts associated with a east-moving squall line.  The Cameron County Airport at Port Isabel, just three miles inland from the coast, reported a gust of 49 knots at 858 AM CST, and is used as a proxy for this report.