A day after the U.S. dollar suffered its largest one-day fall in three years against the yen, strategists say the wild currency moves may be far from over and much is dependent on Friday's key U.S. jobs report.
Japan's yen, which has gone from steep decline to sharp gains in a matter of weeks, hit its highest level in almost two months against the dollar on Thursday. The euro jumped more than 1 percent against the greenback and the battered Australian dollar won a reprieve, bouncing off Thursday's 20-month low.
Analysts say it's hard to pin point exactly what triggered the overnight dollar drubbing, although investors used the opportunity to pull-back on long dollar and short yen positions with some nervousness about the closely-anticipated U.S. payrolls report encouraging the dollar bears.
(Read More: Dollar Still in Firing Line Ahead of US Jobs Report)
"The sell-off in the dollar suggests that some traders may have already priced in a weaker release, but we think there is still room for a downside surprise and further dollar weakness," said Kathy Lien, a managing director at BK Asset Management in a note.
"However if payrolls surprise to the upside and print at 175,000 or better, all of the liquidation of dollar long positions that we saw [Thursday], particularly in dollar/yen could be reversed quickly and aggressively, with the pair potentially trading back to 98 in a blink of an eye," she said.
Economists expect the U.S. economy created about 170,000 new jobs in May versus 165,000 in April and the data are seen key to shaping market expectations on an unwinding of U.S. monetary stimulus.
(Read More: Why May Jobs Report Could Be Watershed for Markets)
The dollar was trading at around 96.80 yen in early Asia trade on Friday, having fallen as far as 95.96 overnight – some 7.5 percent below a four-and-a-half year high hit just over two weeks ago.