The space center of Johnson in Houston was closed because of a hurricane

One of the key centers NASA won't work till September 5. The flood caused by the hurricane Harvey which has struck blow to Texas became the reason of closing. At the same time the Mission control center in Houston which is engaged in operational control of the ISS functions as before. Employees continue to work in him, systems haven't suffered from a hurricane. Also in NASA have noted that the laboratory where these days passes test of the James Webb space telescope hasn't suffered.

 Source