As indicated by the Maryblyt graphic below, the fire blight outlook for this week remains similar to what was predicted last Friday: With warmer temperatures, risk will increase with EIP (epiphytic inoculum potential) by mid-week to the point where infection could occur with wetting Friday, May 10. Risk will remain at an infective level at least through May 12. Most trees in the area still have susceptible bloom, and some is likely to remain into the coming weekend.
The weather conditions used in the predictive part of this graphic are from the Weather Channel for Winchester, supplemented by site-specific data from SkyBit Inc.