A quarter point raise is already priced in. A half point raise could have the opposite effect on the long end of curve because it would likely be taken as a deflationary surprise for future growth and a stronger than expected stance against inflation, which could cause de-risking flows from stocks to bonds. The result is an asymmetric trade opportunity due to the expected outcome already being priced in and the "surprise" outcome potentially resulting in a favorable movement.
Watch for resistance around 2% yield and trendline break in lead up to March FOMC meeting.