Markham, TX Warnings, Watches and Advisories
SAFETY and DATA MESSAGE
Do not drive vehicles through flooded areas. The water depth or fast flowing water/mud/debris from a flash flood will make road conditions unsafe. Do not rely soley on data presented here or other third-party websites - always check your official national and local weather service agency website, socials, radio and/or TV stations for making critical decisions related to weather events.
Please carefully read each posted Warning and Alert as it relates to the area(s) being affected. We may provide a wider range of issued severe weather warnings for surrounding cities and counties, so some alerts may not directly impact this location. This is done to help with preparing for severe weather that may overlap or be heading towards Markham.
Use the Radar Maps link provided to understand the trajectory of a storm.
NWS Active Alerts for TX - Map View
Special Weather Statement
Brooks; Inland Kenedy; Inland Willacy; Northern Hidalgo
Special Weather Statement issued May 20 at 6:04AM CDT by NWS Brownsville TX
At 603 AM CDT, Doppler radar was tracking a cluster of strong thunderstorms near Rudolph, or 13 miles north of Lasara, moving southeast at 45 mph. HAZARD...Wind gusts up to 40 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... San Manuel, Linn, Encino, Rachal, Yturria, El Coyote Ranch Airport, Hargill Elementary, Rudolph, Hargill Reservoir, and Hidalgo City Park. This includes the following highways... Interstate Highway 69 E near mile marker 51. US Highway 77 between mile markers 748 and 762. US Highway 281 between mile markers 716 and 758.
Moderate
Observed
Expected
May 20th, 2026 06:04:00 am CDT
May 20th, 2026 06:04:00 am CDT
May 20th, 2026 06:45:00 am CDT
Severe Thunderstorm Warning
Kenedy, TX
Severe Thunderstorm Warning issued May 20 at 5:43AM CDT until May 20 at 6:30AM CDT by NWS Brownsville TX
SVRBRO The National Weather Service in Brownsville has issued a * Severe Thunderstorm Warning for... Kenedy County in Deep South Texas... * Until 630 AM CDT. * At 543 AM CDT, a severe thunderstorm was located 11 miles southeast of Kenedy County Wind Farms, or 21 miles east of Armstrong, moving southeast at 35 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Armstrong, Sarita, Kenedy County Wind Farms, Norias, U S 77 Border Patrol Station, Kenedy County Sheriffs Office, and Armstrong Ranch Airport.
Severe
Observed
Immediate
May 20th, 2026 05:43:00 am CDT
May 20th, 2026 05:43:00 am CDT
May 20th, 2026 06:30:00 am CDT
Flood Advisory
Brazoria, TX
Flood Advisory issued May 20 at 4:42AM CDT until May 20 at 7:45AM CDT by NWS Houston/Galveston TX
* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...A portion of southeast Texas, including the following county, Brazoria. * WHEN...Until 745 AM CDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 442 AM CDT, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 1 and 2 inches of rain have fallen. - Additional rainfall amounts of 1 to 3 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Lake Jackson, Freeport, Clute, Surfside Beach, Richwood, Jones Creek and Oyster Creek. - http://www.weather.gov/safety/flood
Minor
Likely
Expected
May 20th, 2026 04:42:00 am CDT
May 20th, 2026 04:42:00 am CDT
May 20th, 2026 07:45:00 am CDT
Flood Advisory
Aransas, TX; Refugio, TX; San Patricio, TX
Flood Advisory issued May 20 at 4:27AM CDT until May 20 at 6:30AM CDT by NWS Corpus Christi TX
* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Southwestern Aransas County in south central Texas... Southwestern Refugio County in south central Texas... Eastern San Patricio County in south central Texas... * WHEN...Until 630 AM CDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 427 AM CDT, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 1 and 2 inches of rain have fallen. - Additional rainfall amounts of 1 to 2 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Rockport, Sinton, Taft, Woodsboro, Ingleside, Aransas Pass, Gregory, Bayside, Bonnie View, Copano Village, Fulton and Taft Southwest. - http://www.weather.gov/safety/flood
Minor
Likely
Expected
May 20th, 2026 04:27:00 am CDT
May 20th, 2026 04:27:00 am CDT
May 20th, 2026 06:30:00 am CDT
Rip Current Statement
Matagorda Islands; Brazoria Islands; Galveston Island; Bolivar Peninsula
Rip Current Statement issued May 20 at 1:36AM CDT until May 20 at 10:00PM CDT by NWS Houston/Galveston TX
* WHAT...Dangerous rip currents. * WHERE...Gulf-facing beaches, including the Matagorda Peninsula, Brazoria County beaches, Galveston Island and the Bolivar Peninsula. * WHEN...Through this evening. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water.
Moderate
Likely
Expected
May 20th, 2026 01:36:00 am CDT
May 20th, 2026 01:36:00 am CDT
May 20th, 2026 05:45:00 pm CDT
Coastal Flood Advisory
Coastal Aransas; Coastal Nueces; Coastal San Patricio; Coastal Refugio; Coastal Calhoun
Coastal Flood Advisory issued May 19 at 11:23PM CDT until May 20 at 6:00PM CDT by NWS Corpus Christi TX
* WHAT...Minor coastal flooding expected. * WHERE...Coastal Aransas, Coastal Nueces, Coastal San Patricio, Coastal Refugio and Coastal Calhoun Counties. * WHEN...From 7 AM to 6 PM CDT Wednesday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. * ADDITIONAL DETAILS...High tides today generally mid morning on ocean-facing beaches and mid-afternoon on bay-facing beaches.
Minor
Likely
Expected
May 19th, 2026 11:23:00 pm CDT
May 19th, 2026 11:23:00 pm CDT
May 20th, 2026 06:00:00 pm CDT
Coastal Flood Advisory
Aransas Islands; Kleberg Islands; Nueces Islands; Calhoun Islands
Coastal Flood Advisory issued May 19 at 11:23PM CDT until May 20 at 6:00PM CDT by NWS Corpus Christi TX
* WHAT...For the High Rip Current Risk, dangerous rip currents. For the Coastal Flood Advisory, minor coastal flooding expected. * WHERE...Aransas Islands, Kleberg Islands, Nueces Islands and Calhoun Islands Counties. * WHEN...For the High Rip Current Risk, through Wednesday afternoon. For the Coastal Flood Advisory, from 7 AM to 6 PM CDT Wednesday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. Rip currents can sweep even the most experienced swimmers away from shore into deeper water. These rip currents can become life-threatening to anyone entering the surf. * ADDITIONAL DETAILS...High tides today generally mid-morning on the ocean-facing beaches.
Minor
Likely
Expected
May 19th, 2026 11:23:00 pm CDT
May 19th, 2026 11:23:00 pm CDT
May 20th, 2026 06:00:00 pm CDT
Rip Current Statement
Aransas Islands; Kleberg Islands; Nueces Islands; Calhoun Islands
Rip Current Statement issued May 19 at 11:23PM CDT until May 20 at 6:00PM CDT by NWS Corpus Christi TX
* WHAT...For the High Rip Current Risk, dangerous rip currents. For the Coastal Flood Advisory, minor coastal flooding expected. * WHERE...Aransas Islands, Kleberg Islands, Nueces Islands and Calhoun Islands Counties. * WHEN...For the High Rip Current Risk, through Wednesday afternoon. For the Coastal Flood Advisory, from 7 AM to 6 PM CDT Wednesday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. Rip currents can sweep even the most experienced swimmers away from shore into deeper water. These rip currents can become life-threatening to anyone entering the surf. * ADDITIONAL DETAILS...High tides today generally mid-morning on the ocean-facing beaches.
Moderate
Likely
Expected
May 19th, 2026 11:23:00 pm CDT
May 19th, 2026 11:23:00 pm CDT
May 20th, 2026 06:00:00 pm CDT
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Currently
| 75°F |
29.95 inHg.
Barometer 97%
Humidity SE 10.4 mph Wind |
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| Fog | ||