Monarch PEAK Migration
Sightings report image

Date: 08/29/2020

Number: 146

My friend (Larry) and I went to the beach along Lake Huron at Harrisville State Park with strong northwest winds and recorded 146 migrating monarchs. Some were high overhead with some landing to rest on the beach before taking off again in low directional flight southward. This was the 3rd highest peak count in August since 2010. Last year the peak was on August 30, 2019, with 409. The highest peak still stands at 1,016 on August 22, 2018. Before that, the peaks have been less than 32 in August. Here is the hour by hour count:
10:30 AM to 11:30 AM - 3.
11:30 AM to 12:30 PM - 25.
12:30 PM to 1:30 PM - 34.
1:30 PM to 2:30 PM - 21.
2:30 PM to 3:30 PM - 19.
3:30 PM to 4:30 PM - 28.
4:30 PM to 5:30 PM - 16.
No monarchs were observed after 5 PM.
Total: 146.
Weather was cloudy with about 40% sunshine with the Wind NW 12-30 mph sustaining at 15.8 mph. Temperature at start was 63F., and at 67F. at end of count with the high topping out at 72F.

Harrisville, MI

Latitude: 44.6 Longitude: -83.3

Observed by: Frank
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