Heavy rain coming back to bite us - WNEM TV 5

Heavy rain coming back to bite us

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SAGINAW COUNTY, MI (WNEM) -

If you’ve been swatting more mosquitos than usual while enjoying the fall weather, you aren’t alone.

Local mosquito controls report that above average rainfall and temperatures have created a bumper crop of the pests.

Part of the problem is the heavy rain we got on September 8 and 9 that resulted in more than 5 inches in certain areas of Mid-Michigan.

Rain events of more than 2 inches will create nuisance populations. With problems coming back to bite us 10 to 14 days after a high rain event. That gives the eggs time to hatch, and create adults looking for blood.

It’s that water, and the above average temperatures that have created a perfect biting storm of differing size and voraciousness.

Here in Mid-Michigan, the most abundant nuisance mosquito is the Aedes vexans which utilizes all of the floodwater habitats and is most pronounced around sunset and into the night. This type accounts  for over 70% of our mosquitos. The most aggressive mosquito is the Aedes trivittatus and its breeding habitat is found in wooded areas often associated with lowlands along rivers.  This mosquito will bite regardless of time of day as long as humidity and temperatures are ideal. And of course there is the Psorophora ciliata. What the largest native mosquito may lack in numbers, it makes up for in size. Its legs easily spread across a penny. It is said that their bite may be painful.

According to experts, temperatures and humidity determine the biting activity, with temperatures above 60 being ideal.

See our 7-day forecast here.

 For those of you looking for some relief, here’s what Saginaw County Mosquito Control has to say:

Saginaw County Mosquito Control is making every effort to get into those areas experiencing nuisance. The areas experiencing the highest nuisance are portions of City of Saginaw and the following townships, Saginaw, Thomas, Kochville, Tittabawassee, Swan Creek and James. There is also nuisance in those areas adjacent to these townships and the Shiawassee National Wildlife Refuge. Our nighttime spraying operations target mosquitoes in flight. The spray is a contact insecticide. The spray offers no residual control as we are targeting mosquitoes only, not non-target insects such as bees. Nightly weather will dictate the speed at which mosquito control is able to move throughout the County; temperatures below 55°F, winds in excess of 10 mph, and rain will preempt nightly treatment.

Bay County Mosquito Control also has commented on the pesky situation:

Bay County Mosquito Control crews have worked extended hours to treat flooded habitats. While many acres of habitat were treated and many larvae controlled, it was not possible to treat all flooded habitats within the limited ten day window before mosquitoes emerged as adults. Adult mosquito populations are very high, especially in the areas where the heaviest rains fell. Bay County Mosquito Control is aware of this situation and will continue evening truck fogging until adult mosquitoes are reduced in those areas.

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