At least 13 people were reported killed in Ciudad Acuña, a Mexican border town west of San Antonio, after a tornado struck.
In nearby Houston, fans who had just watched the Houston Rockets play the Golden State Warriors were forced to stay in the Toyota Center arena because of emergency flash flooding, while the video board provided news.
Twitter user Jeff Syptak shared this photo of Interstate 45 in Houston on Monday night.
The iconic picture of I-45 at N. main. Just crazy. Need to address this area's recent traffic backup. #Houstonflood pic.twitter.com/S2Gl76QasM
— Jeff Syptak (@JeffSyptak) May 26, 2015
Instagram user Maherfilms posted this picture of Trinity River near Dallas overflowing with water on Tuesday.
A photo posted by Michael Maher (@maherfilms) on May 26, 2015 at 9:07am PDT
Twitter user @astrosguy tweeted out this image of flood water around Reliant Stadium in downtown Houston where the Texans play.
Areas around Reliant Stadium completely under water. #houstonflood pic.twitter.com/UP8eoAJ8go
— Beer and Bae sball (@astrosguy) May 26, 2015
Another Houston Twitter user, Steve Helm tweeted this image showing the extent of the flood damage.
Prayers for all affected by the #HoustonFlood- esp for the #poor who already struggle in "good weather." 3rd/5th Ward pic.twitter.com/Dt8cgRF73x
— Steve Helm (@javapastor) May 26, 2015
Houston Meterologist with AccuWeather, Becky Elliot tweeted out this image showing parts of Houston inundated with water.
Blue=flood. People should not try to go anywhere in #Houstonflood this am. Good site for info. http://t.co/oIz8FkLcFU pic.twitter.com/ypjGxOVNH9
— Becky Elliott (@AccuWxBeck) May 26, 2015
And Twitter user Erin Ruberry posted this photo on Tuesday of the Houston Galleria Mall parking garage submerged underwater.
Wow: The lower parking garage at Houston's Galleria mall is underwater (via @KHOULily) #houstonflood pic.twitter.com/TnRiSoB6EF
— Erin Ruberry (@erinruberry) May 26, 2015
Twitter user @PHILOCALYLOUIS shared these photos of the highway outside Houston.
when you think its a river but it's actually a highway #houstonflood pic.twitter.com/idAROXGPXy
— stephanie (@PHILOCALYLOUIS) May 26, 2015