2:30 p.m.: A Flash Flood Warning has been extended until 4:45 p.m. for southeast Hidalgo County and far western Cameron County. Rain is decreasing, but some flooded roads may continue, especially from west of Harlingen to near Mercedes. 

9:00 a.m.: A Flash Flood Watch has been issued for the entire Rio Grande Valley through Wednesday afternoon. 

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The National Weather Service in Brownsville issued a Flash Flood Watch for a portion of deep South Texas, including:

• Coastal Cameron County
• Coastal Willacy County
• Inland Cameron County
• Inland Willacy County
• Northern Hidalgo County
• Southern Hidalgo County
• Starr County 

The NWS says numerous showers and thunderstorms may produce heavy rainfall and is expected to continue this morning through Wednesday afternoon. 

Rainfall amounts of three to five inches are expected. 

Low-lying and poorly draining areas may experience flash flooding, according to NWS. 

Heavy rainfall over a short period of time will cause difficulty in driving.