>>2022986There's a reason the alternate minimums required are relatively high. But correct, not all alternates will work, ATC can and will suggest suitable airports if you ask for help. Also consider that "Flight Visibility" is not visibility reported by an AWOS/ASOS, it's what you see with your eyes. A VOR approach may only get you down to 600 feet AGL, but by seeing lights you can continue down as low as 100 feet AGL as an example. As a general statement, if you can see the approach lights/runway environment, your flight visibility is suitable to land. Everyone says "I'd just keep going bro" when vis is low, but until you're actually flying with visibility that low, you don't know how unsettling it really is, and you're more likely to pussy out to another airport unless you are truly about to run out of gas. I've shot less than 5 real approaches to minimums in my life, its just not all that common in the US sunbelt. RIP to the real ones in the Northwest and Northeast, glad I ain't you guys.
Notable exception to this, the RVR on an equipped runway is so good that the FAA says a pilot cannot override its report with flight visibility. Keep in mind there are notable exceptions to visibility requirements depending on your Operating Rules and op specs as applicable.