Place fly masks on pastured horses to reduce the incidence of eye injuries from flying debris. Make certain if you halter your animals that the halter will break if caught on an object. Most feed stores carry blank cattle ear tags which can be written on with a permanent marker. Braid into the animals' manes or tails. Consider spray painting your phone number in white or blaze orange paint on both sides of the barrel or hip of your horse.
Microchips insert in the neck muscle are also excellent way to identify an animal.
Be sure to store these items in an area that will remain dry. If practical, evacuate yourself and your horses well in advance of the storm to a safe holding area. Loading a horse during extreme weather may be impossible. Be aware of rapidly rising water. If you are unable to evacuate, remove horses from their stalls and barns to higher ground prior to a rising water threat.