Cherry harvest is underway in the Mid-Columbia, starting last week with Chelans, and the early bing cherries will start to be picked in a couple of days.  Oregon State University extension agent Lynn Long says crop size appears to be very good, and he expects a 40,000-ton crop in Wasco County alone.  What that means for market prices is always a concern, but Long thinks the crop should sell well.  Cool temperatures in the past few days has slowed ripening, which Long says will create longer spacing between varieties.  He added they have been fortunate to have no rain in the past few days, and clear skies are forecast in the middle part of the week.