Epi Week #37 - 2014 General Statements

Arbovirus activity dropped this week, with numbers of EEEv- and WNV-positive mosquito pools remaining far below those found in 2013 and 2012. Districts/Projects with arbovirus-positive mosquitoes have continued to implement standard control responses, including larviciding of catch basins and ULV truck spraying of adulticide in a wide area around positive finds. However, those activities are winding down for the season, and several Districts/Projects have ended treatments except for emergency responses (and even those will be dependent on nighttime temperatures being high enough).

Weather

Epi Week 37 featured temperatures that were much more typical for early September, and averaged near normal for this time of year. Precipitation generally ranged from about 0.25” to 0.50” for the period, which is below normal.

Epi Week 38 will feature almost “Octoberlike” temperatures by the end of that week. By Thursday, some areas will be hard pressed to crack the 60’F degree mark for the daytime high, which is a dramatic reversal from the low 90’s recorded less than two weeks ago. Additionally, with clear skies, calm winds, and low dewpoints, some areas will likely experience their first frost of the season. Little to no precipitation is expected for the period. While Hurricane Eduard (a Category 1 hurricane) is now racing northeast through the central Atlantic, it poses no threat to the U.S.