Updated HAREC spore counts through May 5 are displayed below. Low levels of spores (< 50/day) have been captured on most days.

Accumulated degree-days as of May 9 were 351 in Hermiston, OR (solid line). According to the model, most ascospores are produced in the Lower Columbia Basin when accumulated degree-days are between 414 and 727.

At this time in 2018, accumulated degree-days were 379 (dotted line).