The Santa Ana winds are a cool season wind that blows in from the desert, raising dust, fanning fires, and causing many to head to the store for eye drops and chapstick.
What are they?
We may think Santa Ana winds are a San Diego phenomenon, but they actually originate elsewhere. Santa Ana winds originate in the Great Basin, which spans the inland deserts in southeastern US. Although these winds occur in the cooler months of the year-mainly September through May- Santa Ana winds typically feel warm (or even hot) because as high pressure systems push cool desert air east- down the side of mountains- the air is compressed, making it hotter and drier.
In addition to getting warmer, these winds also lose humidity and gain speed as they're forced between passageways and canyons.
Why are they so dangerous?
Unfortunately, those hot, dry winds happen to coincide with Southern California’s fire season, these winds can be three times drier than the air in the desert- turning vegetation into fuel and fanning flames.
These high winds can also cause large semi-trucks to flip, create automobile collisions, down trees and powerlines, and damage from flying debris.
How to safely enjoy the outdoors during Santa Ana Winds?
Many things are closed, so if you do decide to go explore during these times be more cautious than usual.
Rehydrate often. Dry, hot winds will dehydrate you quickly.
Use extreme caution when hiking around canyon openings and in higher elevations. Some gusts can be over 60 mph
Be aware of flying debris. Wear sunglasses or some kind of eye protection.
Watch for broken limbs or fallen trees
Most importantly. Stay current on wildlife conditions. Santa Ana winds can turn small fires into massive ones very quickly.
