Don’t stand near a window to watch the lightning. … If lightning does happen to hit it, the metal can conduct the electricity a long distance (even over 100 yards) and still electrocute you.
Should you close blinds during thunderstorm?
If a thunderstorm is headed your way, bring in any outdoor furniture that could be blown around or damaged by hail, close and shutter windows (or close blinds and drapes) and unplug appliances and computers to protect them from power surges that could be caused by lightning.
Will curtains protect from lightning?
In a lightning storm, avoid water, high and open ground, metal spaces, canopies, picnic or rain shelters, trees, and electrical/electronic equipment. If you are in a structure that has curtains or blinds over windows, close them to prevent glass shards from flying into the structure from a broken window.