HOUSTON (AP) — Thick black smoke and towering orange flames shot up Friday from a flooded Houston-area chemical plant where highly unstable compounds blew up a day earlier after losing refrigeration.

It was the second day that flames and smoke could be seen at the Arkema plant in Crosby. Arkema says Harvey's floodwaters engulfed its backup generators and knocked out the refrigeration necessary to keep the organic peroxides from degrading and catching fire. After Thursday's fire, Arkema had said it had eight more containers that could blow up.

The Environmental Protection Agency and local offic...