Even a concrete house is not proof against a forest fire - it may still be there (mostly), but humans inside might not survive in an intense fire (assuming no other fire protection) - and forest fire is the main risk/threat.

The best fire protection for any home is removing fuel around it, and covering the home in foam or a fire protection blanket.

Even underground homes may be iffy if the fire lasts long enough.

Falling trees (due to wind/ice/snow) are the secondary, although I do have trees fall almost every year (so far not close enough to hit the house). Falling trees on the mountain are common in the winter & early spring - often block roads for a few hours - can be days in certain areas.

Volcanoes are a regional threat and not likely to cause me to evacuate. Flooding just doesn’t happen on the mountain - although I get double the precipitation the valley gets, all that water drains off into the valley - at most it is an inconvenience if flood waters block a valley road or cause a landslide somewhere (common, but I just use detours).

I had my back acreage clear cut (and replanted) - although the hardwoods (mostly maple, some oak) have grown back with a vengeance (I am leaving them alone for coppicing - they make good firewood). I had the acreage around the house thinned and somewhat cutback away from the house (although some are still large enough to hit the house if they fall) - almost solely 60+ YO mature conifers now - they serve as a good windbreak and add to curb appeal (what young maple {smaller than 1’ diameter} is near the house I am slowly using for firewood).