Things seem to be getting worse at the Fukushima Nuclear Plant.

Today Tepco announced radiation readings of up to 4,000 millisieverts per hour at reactor No. 1 -- the highest air radiation yet at that reactor, according to Japan Times. This follows video of steam rising from the reactor floor.

Tepco also warned that pools of radioactive water will overflow by June 20 or sooner if there is heavy rain.

While storage tanks are rushed to the area, the weather forecast for Fukushima is ominous: Thunderstorms tomorrow and rain throughout the week.

According to Japan Times, doubts are growing as to whether Tepco can bring the plant under control by January as promised.