I completely understand your concerns. I grew up in a place where they burned the grasslands every year before the rainy season. So one would go outside with a broom and beat back the flames as they encroached to keep the house from burning. The house was made of brick, so one did not need to be terribly effective. The short bermuda grass in the yard was so scrawny that it provided little fuel, so even a young child could fight back the flames over a wide front. What fond memories that evokes!
Here in Prescott, the area is surrounded by national forest. The forestry department does periodic controlled burns. So for several weeks each winter the whole place smells like a great outdoor barbeque. And the smoke pools in the low basin at the center of town.
There have been times when forest fires encroached on neighborhoods, and only a change of wind direction kept them from consuming the alpine neighborhoods on the west edge of town - not far from where I live.
Nature is beautiful. And terrible.
It's so easy to imagine that water will be there when you want it. And it's incredibly inconvenient when it's not. I hope you have enough water to keep you safe an to keep your roses happy.