The best I could find with some research was the Dvorak Technique used to measure cyclone intensity from visible and infrared images.
Also from Wikipedia:
While typical mature storms have eyes that are a few dozen miles across, rapidly intensifyingstorms can develop an extremely small, clear, and circular eye, sometimes referred to as a pinhole eye. Storms with pinhole eyes are prone to large fluctuations in intensity, and provide difficulties and frustrations for forecasters.[7]
Lastly I would guess it has to do with plain angular momentum. A cyclone that contracts will spin faster, if angular momentum is constant, in the same way that a figure skater speeds up when they tuck in their arms.
The smaller the eye, the stronger the wind?
relatable
I'm no weather expert, but because the "eye" is the "calm" part of the storm, maybe having a really small one means less calmness is in the storm.
The best I could find with some research was the Dvorak Technique used to measure cyclone intensity from visible and infrared images.
Also from Wikipedia:
Lastly I would guess it has to do with plain angular momentum. A cyclone that contracts will spin faster, if angular momentum is constant, in the same way that a figure skater speeds up when they tuck in their arms.