#barometric pressure

The pressure rise is slowing down a little and my body is considerably less cranky now. But during that 22:00-23:00 hour I was very incapacitated. It's a good thing I got that cane.

Microbarom on Wikipedia

This line was particularly interesting: "the aerologists working at the marine Hydrometeorology stations and watercraft drew attention to the strange pain that a person experiences when approaching the surface of a standard meteorological probe".

Strange pain from absurdly low frequency sound?!?! Yeah! That's what I experience almost daily now.

क्या आपने कभी मानसून के मौसम में जोड़ों के दर्द या किसी पुरानी चोट के कारण पुराने दर्द के उभरने का अनुभव किया है? बहुत से लोग देखते हैं कि जब बारिश होती है या मौसम थोड़ा ठंडा होता है, तो उनके जोड़ों का या पुराना दर्द फिर से उभरने लगता है। लेकिन ऐसा क्यों होता है? बारिश से पहले, बैरोमीटर का दबाव बदल सकता है, और इससे पहले से ही संवेदनशील जोड़ों, टेंडन या तंत्रिकाओं के आसपास दबाव थोड़ा बदल सकता है।…

That blob of red/white dots indicates why I hurt right now.

Lightning produces thunder. Thunder contains the full audio spectrum, including frequencies below 20 Hz. Frequencies below 20 Hz are infrasonic (inaudible to humans), but can still mess humans up like any other excruciatingly loud noise. But in this case, it's brain fog, body aches, light sensitivity, and so on.

What's super wild is that when weather fronts move across the continent, it's always at the same-ish point on the map that thunder starts causing physiological problems for me. That's because infrasound frequencies have ridiculously long wavelengths, so it takes a lot of distance to really notice the pressure shifts. It's like an acoustic tsunami.