• USDJPY sets the ground for a bullish reversal, but it's still trapped below key resistance

• Technical signals cannot rule out more bearish actions; sellers wait below 140

• Fed to deliver its first rate cut in four years at 18:00 GMT

USDJPY turned green on Tuesday, marking its best daily session in a month after securing a solid base around the 140 number.

The time has finally come for the Fed to make a crucial decision between a 25bps or a 50bps rate cut today at 18:00 GMT and the pair seems to have completed a bullish dragonfly candlestick pattern. Following a steep downward trend from a 38-year high of 161.94, the price might again push for some recovery, especially if the central bank announces a normal 25bps reduction.

Nevertheless, previous bullish endeavors were unable to surpass the 20-day exponential moving average (EMA) at 143.55, and additional obstacles may arise at the 145.00 trendline region prior to the 50-day EMA at 147.25.

Despite a slight improvement in technical indicators, downside risks persist as the RSI remains deep in bearish territory. Nonetheless, only a close below the 140.00 floor could bolster selling forces towards the 137.00-137.80 trendline zone. There are two more constraining lines to the downside, passing through 135.60 and 134.00. Falling lower, the pair might next stop near 133.00.