Can we use the 'L" word?
Lightning?
Not spectacular, multimillion volt lightning bolts
miles in length [like here on Earth], but a few high voltage electrical discharges that maybe meters or tens of meters in length.
And if you are not protected by a "Faraday Cage type" shielding
[or fine wire mesh imbedded in your spacesuit] you'll receive
a nasty shock...and when you regain consciousness....
You'll think better to consider martian weather benign.