Laguna Madre from the Port of Brownsville to the Arroyo Colorado Marine Forecast
| Today...South Winds Around 5 Knots, Becoming East This Afternoon. A Light Chop On The Bay. |
| Tonight...Southeast Winds 5 To 10 Knots, Becoming South After Midnight. A Light Chop On The Bay. |
| Friday...South Winds 5 To 10 Knots, Increasing To 10 To 15 Knots In The Afternoon. A Light Chop On The Bay, Increasing To A Moderate Chop On The Bay In The Afternoon. |
| Friday Night...South Winds 10 To 15 Knots. A Moderate Chop On The Bay. |
| Saturday...South Winds 5 To 10 Knots. A Light Chop On The Bay. |
| Saturday Night...Southeast Winds 5 To 10 Knots. A Light Chop On The Bay. |
| Sunday...North Winds 15 To 20 Knots, Increasing To 20 To 25 Knots In The Afternoon. Choppy Bay Waters, Increasing To Rough Bay Waters In The Afternoon. |
| Sunday Night...North Winds 20 To 25 Knots. Rough Bay Waters. |
| Monday...North Winds 20 To 25 Knots, Becoming Northeast 15 To 20 Knots In The Afternoon. Rough Bay Waters, Diminishing To Choppy Bay Waters In The Afternoon. |
| Monday Night...Northeast Winds 5 To 10 Knots, Becoming Southeast After Midnight. A Light Chop On The Bay. |
| Area Forecast Discussion National Weather Service Brownsville TX 1144am CST Thu Nov 6 2025 Issued at 1128am CST Thu Nov 6 2025 The forecast remains largely unchanged as ridging aloft remains over Deep South Texas, maintaining mainly clear skies and dry conditions through next Thursday. Southeasterly onshore to southerly winds today continue to advect moisture inland through Saturday, courtesy of surface high pressure over the Gulf and southern US. As winds become light and variable to calm overnight tonight, there is the possibility of patchy fog, especially across the northern ranchlands and west of US-281/I-69 C. Upstream, a robust ridge aloft arriving over the Pacific Northwest tonight pushes a mid/upper level shortwave over the Rockies tomorrow with a cold front attached to a surface low pressure developing over the Central Plains on Saturday, moving southward through our County Warning Area (CWA) on Sunday as a trough deepens across the eastern CONUS. Due to the tight pressure gradient developing along this front, a strong high pressure across the Plains will result in breezy north-northeasterly winds, gusting up to 25-30 mph, region-wide behind the front, advecting much drier air into the region on Sunday, thus crashing relative humidity values to as low as the lower 20's on Sunday and the lower teens on Monday (lowest out west both days) with breezy conditions persisting closer to the coast. The combination of such low relative humidity values and breezy conditions continues to draw attention to fire weather concerns, focused on the northern ranchlands and possibly the middle and upper Rio Grande Valley on Sunday and across portions of the coastal counties on Monday; Fire Danger Statements are possible. Temperature wise, a warming trend will increase highs from the upper 80's and lower 90's today to mainly lower to mid 90's on Friday and Saturday, with near record breaking temperatures possible as highs soar to 10-15 degrees F above average. A Minor (level 1 of 4) HeatRisk is expected across most of Deep South Texas today, tomorrow and Saturday. As the front passes through on Sunday, temperatures fall from near average on Sunday, with 80's, to 10-15 degrees F below average on Monday, with 60's and 70's. Another warming trend ensues Tuesday into the later parts of next week as ridging across the western US and surface high across the southern US result in southeasterly winds again. A low risk of rip currents continues through the day tomorrow though dangerous swimming conditions and impacts to the Lower Texas coastal and marine areas are expected Sunday and into the beginning of next week as strong winds over the Gulf results in high surf as well as strong rip and longshore currents. Marine Issued at 1128am CST Thu Nov 6 2025 Mostly gentle southeasterly winds and slight (1-2 ft) seas today become moderate southerly winds with slight to moderate (2-3 ft) seas tonight through Saturday night. Late Saturday night into early morning Sunday, winds shift out of the north as a cold front passes southward through the Lower Texas coastal waters. Small Craft Advisory headlines are likely on Sunday and Monday as a tight pressure gradient enhances north-northeasterly winds to strong to near-gale by Sunday afternoon, persisting into Monday, resulting in moderate to rough seas. Conditions improve Monday night into Tuesday with moderate to fresh southeasterly winds and moderate seas resulting in periods of Small Craft Exercise Caution conditions possibly into the later part of next week. NOAA Brownsville TX Office: Watches - Warnings - Advisories TX...None. GM...None. |
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