The situation in Texas and other Southern areas is effecting postal delivery.
The U.S. Postal Service is communicating with shippers and mailers through their Service Alerts.
Here is the site: http://about.usps.com/news/service-alerts/welcome.htm
Currently, the USPS has instructed the mailing community to divert or curtail drop shipments. The USPS has suspended delivery in certain areas, but there has been no decision on stopping widespread residential delivery.
As we have seen on media reports, it’s apparent that many households have been either destroyed or damaged beyond repair.
The USPS has also used social media informing displaced residents to file for a temporary change of address (https://moversguide.usps.com/icoa/home/icoa-main-flow.do?execution=e1s1&_flowId=icoa-main-flow).
Publishers and catalogers might consider suppressing the most impacted ZIP-Codes until further information is available.