Had been looking for a chill hours calculator for current winter and found exactly what I was looking for.

Any fruit tree grower can use this and verify if the tree will respond to amount of chill hours it got. If you grow fruit trees this cold winter may have a silver lining.

Last winter was very warm in Gainesville area and numbers bear that out, winter total was 230 chill hours, where average for area is about 500. Current count is 451 and we have until march to accumulate. For comparison, Wellington in Palm Beach county has a whopping 55 hrs.

None of my olive trees bloomed last year and am hoping.for lots this spring. I had also planted fruit trees that needed more hours than local average to take advantage of colder years. Bartlett pear example needs 700 hrs, Byron plum needs about 600 hrs, may get some blooms and fruit after this winter.

http://agroclimate.org/tools/chill-hours-calculator/