San Francisco, 94131 · 2020-03-21 · from the WORLDHUMMAP archive
A low hum in San Francisco, 94131
Low hum that I noticed at night. It goes right through me. Earplugs don’t help. Wakes me up. Can’t stop hearing it once I notice it, omnipresent. Any other noise drowns it out for a moment, then it’s back. Like a distant motor I hear the hum in the walls sometimes. Putting a cup to my ear, I’ve heard it in different walls, but never the same walk twice (yet). I have a stethoscope arriving next week to continue investigating.
What they reported
First noticed: 2020
Loudest: Equal night and day
Where: Indoors
Symptoms: Ear discomfort (pain, fullness, throbbing), Headache, Insomnia, Sense of vibration, Anxiety
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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.
Anomaly