TORONTO, Jan 31 (Reuters) -Shares of Canadian uranium producers rose on Monday, boosted by newsthat Energy Resources of Australia (ERA) will close the processingplant at its Ranger uranium mine for 12 weeks due to bad weather.

The Ranger mine, in the Northern Territory of Australia, accounts forabout 4.5 percent of global uranium supply, Macquarie Research mininganalyst Duncan McKeen said in a note to clients.

"An outage of 12weeks is also relatively severe considering that the uranium market isalready tight with limited supply," he added.

Shares of CamecoCorp were up 4.05 percent at C$41.59, Uranium One rose 7.46 percent toC$6.48, and Denison Mines was up 8.88 percent at C$3.68.

Spot uranium is currently selling for $70 a pound, having risen more than 65 percent since June. Uranium One and Denison Mines are both well exposed to spot pricing.

ERA said on Friday it would close its Ranger processing facilities for12 weeks as a precautionary measure to keep tailings levels below theoperating limit.

The company said that the weather pattern thathas caused significant flooding in Eastern Australia was also causinghigher than average rainfall in the region of the Ranger mine.

Analysts say global uranium supply is tight, with China locking upfuture supply to fuel its expanding nuclear power industry and growingdemand in Europe and Korea.