How about if rangers could sense when a storm is near, and perhaps the intensity of it? Realistic and useful, no?
Check out the 'weather' helpfile. Is that what you mean?
There is a way, I will share it since it seems common sense.
Rangers can navigate the storm so you can literally walk along it's border
safely to know where it is. Then you keep track of the wind and bam there you go.
I do that to some degree with my hunters.
Keeping an eye on the strength of the wind, direction, and amount of sand/dust in the air should be a good enough indicator if a storm is approaching or not, unless you're near red storm area.