Yes the airwaves open up for UHF sometimes as well, especially with a very high antenna. a few years back from 12floor condo balcony I was hearing repeaters from Orlando, Land O lakes and Tampa areas. over 100miles away. Later that day I listened on our local net and everyone was astonished by the opening on many Ham bands as well as UHF.
Last year I was on the SARNet (FL statewide repeater linked network, mostly 440) during a net and was receiving from a ton of repeaters. One ham checked into the Jacksonville repeater from Ft Myers, around a 300 mile hike.