textproduct: Brownsville/Rio Grande Valley
This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.
KEY MESSAGES
Updated at 1206 PM CDT Wed Aug 19 2026
- Hot and dry conditions will continue through the forecast period.
- Moderate (level 2 of 4) to major risk (3 of 4) of heat-related impacts continue with peak afternoon heat indices generally between 105 to around 110 degrees.
- The combination of breezy and dry weather coinciding with low afternoon minimum relative humidity values brings a continued risk of fire weather into next week.
DISCUSSION
Issued at 1206 PM CDT Wed Aug 19 2026
Hot temperatures will continue across Deep South Texas under upper level ridging. Temperatures each day will rise into the upper 90s to low 100s with head indices between 105-110F expected. We look to remain just shy of Heat Advisory criteria each day, though a few locations may briefly exceed 111F. There is a Moderate (level 2 of 4) to Major (level 3 of 4) Heat Risk every afternoon into next week.
While dry conditions will prevail (less than 10%), can not rule out very isolated sea breeze activity through the remainder of the period.
Breezy conditions in combination of lower RH value and abnormally dry conditions, could lead to the potential for rapid wildfire spread throughout the period. While we will shy of any Red Flag Warnings or Fire Danger Statements, outdoor burning is not recommended.
AVIATION
(18Z TAFS) Issued at 1206 PM CDT Wed Aug 19 2026
VFR will prevail through the TAF period at all aerodromes. Breezy conditions will continue through this afternoon with gusts to around 20 kts. Winds will decrease this evening.
MARINE
Issued at 1206 PM CDT Wed Aug 19 2026
An enhanced pressure gradient along the immediate coast will result in periodic daily Small Craft Caution conditions along the Laguna Madre. Otherwise, expect light to moderate southeasterly winds with 2 to 3 ft seas and 4 to 6 second periods.
PRELIMINARY POINT TEMPS/POPS
BROWNSVILLE 82 97 81 98 / 0 0 0 0 HARLINGEN 79 101 78 102 / 0 0 0 0 MCALLEN 81 103 81 104 / 0 0 0 0 RIO GRANDE CITY 79 104 79 104 / 0 0 0 0 SOUTH PADRE ISLAND 82 90 82 90 / 0 0 0 0 BAYVIEW/PORT ISABEL 80 97 80 98 / 0 0 0 0
BRO WATCHES/WARNINGS/ADVISORIES
TX...None. GM...None.
IMPORTANT This is an independent project and has no affiliation with the National Weather Service or any other agency. Do not rely on this website for emergency or critical information: please visit weather.gov for the most accurate and up-to-date information available.
textproduct.us is built and maintained by Joshua Thayer.