One of the most common misconceptions we encounter is that if someone is injured in the mountains, a helicopter can simply fly in and rescue them.
Unfortunately, it doesn’t work that way.
Helicopters cannot safely fly into cloud. When low cloud settles over the mountains, the aircraft cannot climb through it or hover above it to reach a patient. If the cloud ceiling is below your location, the helicopter isn’t an option.
That means Search and Rescue has to change the plan.
Instead of flying directly to you, ground teams will hike for hours to reach your location, provide medical care, and then carry or assist you down the mountain to an area below the cloud ceiling where a helicopter can safely land or conduct a hoist. In some cases, that can add many hours to a rescue.
This is why weather matters just as much as trail conditions.
How to Check the Cloud Ceiling:
The easiest tool to use is Windy.
Using the Meteogram display (shown below), you can see the forecast cloud ceiling hour by hour.
Look at the bottom row labelled “m” (metres).
0 m means cloud to the ground—the mountains are socked in.
400 m means the cloud base is sitting at approximately 400 metres above sea level.
900 m means the cloud base is around 900 metres.
Now compare that number with your objective.
If you’re hiking a 1,500 m summit and the cloud ceiling is forecast to remain around 800–900 m, don’t expect a helicopter to be able to reach you at the top. Any rescue will likely require ground teams to move you to a lower elevation before an aircraft can assist.
The screenshot above is a great example. Throughout Saturday afternoon the forecast cloud ceiling sits between 800 and 1,100 metres. Any incident occurring well above that elevation would likely require a ground evacuation before helicopter extraction became possible.
The takeaway is simple:
Before heading into the mountains, don’t just check for rain—check the cloud ceiling too. It can dramatically affect both your day and, if something goes wrong, how quickly Search and Rescue can reach you.