Epi Week #25 - 2017 General Statements

June 18 - 24

Though the rain continues to keep drought conditions far at bay, collections are down for 2017 when compared to the past 3 years of data. As predicted, populations of the EEEv-carrying Culiseta melanura remain low despite the precipitation; thoughts are that this will be a year of “rebuilding” for this species following 2 years of dry conditions.

Weather

Our weather expert notes that we have already had 7 days this year above 90’F in Boston. That is several weeks ahead of schedule when compared to the past 3 years. Rain continues to be a frequent part of our weather schedule, though the map shows things switched over to focus on the western part of the state (vs. the accumulation in the eastern part of the state in Epi Week 24)

Precipitation in MA for EPI Week 25, 2017

With the heat returning at the end of Epi Week 26, we should expect to see even more hot days as we round out June. For the start of July, expect above-average temperatures (average is typically 80’F) followed by a slight cool-down, and average precipitation. Outlook maps for Epi Week 27 and beyond are below

Precipitation

Epi Week 27 Precipitation across North America

Temperature

 Epi Week 27 Temperature across North America