She called what happened a “once in a generation national disaster” and urged “everyone in the area to remain vigilant, listen to all warnings and

Mr. Trump said his administration was working with state and local officials and that Department of Homeland Security Secretary Kristi Noem would be arriving in Texas shortly. DHS oversees the Federal Emergency Management Agency.

Experts said the NWS did a good job warning about the flooding, but questions remain about whether the cuts played a role.