Hey Volo.
No, it means that the wind causing the insulative fabric of your (presumably dry?) jersey flop and tribocharge a bunch of static electricity, which screws with your heart rate readings. Later in the ride after your jersey has enough sweat, it becomes less insulative and won't do this. Sometimes it helps if you zip your jersey up all the way to prevent the flapping.

My Saturday Ride: PCH-San Luis Rey Trail-76-West Lilac-Circle R-Twin Oaks Parkway. (God I love living and riding here!) I was really looking forward to hauling the freight up Twin Oaks Grade near CSUSM, but was running late for pizza night with my neighbor.