Red Flag Warning Issued for Deep South Texas Through Wednesday Night

Alert Details

The National Weather Service in Brownsville has issued a Red Flag Warning for Deep South Texas, effective until 11:00 PM CDT this evening, March 11, 2026. This alert signifies that critical fire weather conditions are currently occurring or are imminent. Additionally, a Fire Weather Watch remains in effect from Thursday morning through Thursday evening for the same region.

Affected Areas

The warning covers the following regions in Deep South Texas, excluding the islands:

• Brooks County
• Inland and Coastal Kenedy County
• Northern and Southern Hidalgo County
• Inland and Coastal Willacy County
• Inland and Coastal Cameron County

What You Should Do

Residents in the affected areas are strongly advised to avoid outdoor burning, as any fires that develop will likely catch and spread quickly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. Residents should monitor local forecasts for updates and prepare for hazardous conditions.

Expected Conditions

The region is experiencing a precipitous drop in relative humidity following the passage of a dryline.

• Winds: Northwest winds at 10-20 mph with gusts reaching up to 30 mph.
• Relative Humidity: Values ranging between 15 and 30 percent.
• Temperatures: Highs in the mid to upper 90s.
• Drought Context: The area is currently experiencing ongoing drought conditions ranging from D2 (Severe) to D4 (Exceptional).

Timeline

The current Red Flag Warning is in effect until 11:00 PM CDT on Wednesday, March 11. A Fire Weather Watch is also scheduled for Thursday, March 12, from the morning through the evening, as breezy conditions and low humidity are expected to persist.