Stocks in Asia jumped on Tuesday as authorities ramped up stimulus measures to combat the economic impact of the global coronavirus outbreak.

Japan's Nikkei 225 was among the region's major markets that the saw the largest increase. It surged 7.13% by the close to 18,092.35 as shares of index heavyweights Fast Retailing and Softbank Group soared 13.79% and 18.95%, respectively, while the Topix rose 3.18% to end its trading day at 1,333.10.

In South Korea, the Kospi rose 8.6% to close at 1,609.97.

Hong Kong's Hang Seng index also jumped 4.25%, as of its final hour of trading, with shares of Chinese tech juggernaut Tencent gaining 4.71%.

Mainland Chinese stocks also saw gains on the day, with the Shanghai composite up 2.34% to about 2,722.44 while the Shenzhen composite added 2.105% to around 1,666.22.

Meanwhile, shares in Australia advanced, with the S&P/ASX 200 up 4.17% to close at 4,735.70.

Overall, the MSCI Asia ex-Japan index rose 5.02%.

The U.S. Federal Reserve announced an open-ended asset purchase program on Monday. The central bank said the program will run in the "amounts needed to support smooth market functioning and effective transmission of monetary policy to broader financial conditions and the economy."

"The Fed has committed to buying debt, not just government and residential mortgage backed securities but now for the first time commercial mortgages (paper backed by office buildings and the like)," Ray Attrill, head of foreign exchange strategy at National Australia Bank, wrote in a note.

"Unlike during the post (global financial crisis) when there were quantitative limits on how much the Fed would buy each month, purchase amounts are now unlimited," Attrill said.