AnomalyIdle semi truck parked a block away Comes usually in Winter. Even after staying active in gym taking Vitamin D to fight "Winter Blues". It started in 2013 with, I thought a semi was parked a block away and I didn't mind it until one day I decided to go outside to make him find another spot but there was no semi. Have you thought maybe it's a combination of all semi's put together and vibrates through the earth, air and snow? Semi's have to have their truck on in winter because diesel fuel will turn gel in the cold. There is so many semis out there running during the winter.
54736 · 2019-05-05 · from the WORLDHUMMAP archive
An account in 54736
What they reported
First noticed: 2013
Pitch: Sine 70-75 hertz
Loudest: Equal night and day
Where: Equal indoors and outdoors
Symptoms: Just all my hairs in my ears dancing around.
Changes with weather: N/A
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This is a Hum report from Dr Glen MacPherson's World Hum Map, an open, worldwide record of people who hear an unexplained low-frequency hum. Reproduced with permission and with thanks; the project is at thehum.info. We remove anything on request. Location shown is approximate.