Station Name: Rio Grande nr Mercedes, TX
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 76 feet

Nearest Address:
Mercedes, TX 78570
Hidalgo County

GPS Coordinates: 26.0615722, -97.8999833

Nearby Water Temperatures

Flood Watch issued May 23 at 3:02AM CDT until May 25 at 7:00AM CDT by NWS Brownsville TX

Effective: Sat May 23, 2026, 3:02 AM
Expires: Sat May 23, 2026, 1:15 PM

* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...All of Deep South Texas and the Rio Grande Valley. * WHEN...Through Monday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. Storm drains and ditches may become clogged with debris. * ADDITIONAL DETAILS... - Portions of Deep South Texas have already received 3 to 6 inches of rainfall over the last 48 hours. Additional rounds of heavy rainfall are possible through this weekend. Saturated soil and urban poor drainage could lead to isolated to scattered flash flooding. - http://www.weather.gov/safety/flood

You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.

Severe Thunderstorm Warning issued May 23 at 1:16PM CDT until May 23 at 1:45PM CDT by NWS Brownsville TX

Effective: Sat May 23, 2026, 1:16 PM
Expires: Sat May 23, 2026, 1:45 PM

SVRBRO The National Weather Service in Brownsville has issued a * Severe Thunderstorm Warning for... Central Cameron County in Deep South Texas... * Until 145 PM CDT. * At 116 PM CDT, a severe thunderstorm was located near Palmer Laasko Elementary, or near Laureles, moving east at 30 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Harlingen, San Benito, Los Fresnos, Rancho Viejo, Rio Hondo, Olmito, La Paloma, Cameron Park, Laureles, and Downtown Brownsville.

Remain alert for a possible tornado! Tornadoes can develop quickly from severe thunderstorms. If you spot a tornado go at once into the basement or small central room in a sturdy structure. For your protection move to an interior room on the lowest floor of a building.

Special Weather Statement issued May 23 at 1:10PM CDT by NWS Brownsville TX

Effective: Sat May 23, 2026, 1:10 PM
Expires: Sat May 23, 2026, 2:00 PM

At 109 PM CDT, Doppler radar was tracking a strong thunderstorm near Port Mansfield Chamber Of Commerce, or near Port Mansfield, moving north at 35 mph. HAZARD...Wind gusts up to 50 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Port Mansfield, Arroyo City, Port Mansfield Chamber Of Commerce, and Port Mansfield Airport.

If outdoors, consider seeking shelter inside a building. Torrential rainfall is also occurring with this storm and may lead to localized flooding. Do not drive your vehicle through flooded roadways. Frequent cloud to ground lightning is occurring with this storm. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service.

Severe Thunderstorm Warning issued May 23 at 1:02PM CDT until May 23 at 1:45PM CDT by NWS Brownsville TX

Effective: Sat May 23, 2026, 1:02 PM
Expires: Sat May 23, 2026, 1:45 PM

SVRBRO The National Weather Service in Brownsville has issued a * Severe Thunderstorm Warning for... Southeastern Cameron County in Deep South Texas... * Until 145 PM CDT. * At 102 PM CDT, a severe thunderstorm was located over Olmito Lake, or over Olmito, moving east at 30 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... South Padre Island, Southmost, Port Of Brownsville, Brownsville, U.s. Coast Guard Station, Villa Pancho, Port Isabel Lighthouse, Beach Access Four, Port Isabel Fire And Police Department, and Laguna Vista Police Department.

Remain alert for a possible tornado! Tornadoes can develop quickly from severe thunderstorms. If you spot a tornado go at once into the basement or small central room in a sturdy structure. For your protection move to an interior room on the lowest floor of a building.