Indeed. I well remember an occasion a couple of years ago on The Begwns when I watched blue sparks jumping across the PL259 on the end of my 10m dipole feeder! And that was before the thunderstorm started. I was amazed that such a small antenna would pick up so much static electricity. I had the presence of mind to lower the mast to ground level before touching the feeder and beating a hasty retreat to safer levels.
Sometimes it is difficult to decide where safety lies. There are cases on record of people being struck by lightning a number of miles outside a thunderstorm, I remember one case where the storm was four miles from the victim! It is essential that all activators should be aware of the do’s and don’ts of being outdoors in a thunderstorm, since a thunderstorm can brew up in a matter of minutes.
The National Outdoor Leadership School (NOLS) in the US has several publications about lightning safety. They do most of their teaching on month-long treks in the mountains of the western US, so lightning is a big issue for them.
The map as given shows the rain radar - Wales doesn’t look too good today! - but the menu can bring up a lightning map and satellite images of the clouds.
Sudden mountain storms can be scary - I well remember being halfway along Striding Edge when one suddenly appeared from behind the bulk of Helvellyn, at one point I looked down on a horizontal bolt of lightning in the valley, and there is no safe descent from the sides of Striding Edge!