Protective Measures of Beehives During Hurricanes
With uncertain track of hurricane Irma, there are some important considerations for beekeepers who may be affected by the heavy rain and winds. Please further disseminate to your local network of beekeepers.
First, make sure hive equipment is secured to resist strong winds. A simple brick on the top lid is likely to be insufficient to keep the lid from flying off in winds above 50 mph. A lidless hive can cause problems for the bees by introducing moisture and letting heat escape. Strapping the lid down with ratchet straps or securing with duct tape might be in order, particularly for outlying yards. The same is true for hive boxes, particularly if they are relatively new (i.e., the bees have not yet propolized them together sufficiently). Also consider removing unnecessary boxes (e.g., top-hive feeders) to minimize the wind profile.
Third, beware of falling trees and tree limbs. These can be particularly problematic for beehives since they can completely crush all equipment and kill the entire colony. It is also hard to prevent with some sort of barrier or cover because of the sheer weight of many trees, so if you apiary is in a wooded location you may need to move the hives temporarily.
Finally, following heavy rains like hurricanes, various local and state agencies have traditionally sprayed regions with stagnant water to control mosquito outbreaks. While important for public health, such insecticides can be extremely problematic for honey bees. If you are registered through the NCDA&CS, you will be contacted directly if your beehives are in an area schedule to be sprayed. If you are not registered, however, the state has no means to notify you and your bees may be at risk to insecticide exposure. Please consult the Agricultural Chemical manual for information and advice about how to mitigate exposure to pesticides.