Monsoon season at Grand Canyon National Park
typically lasts from Mid-June to Mid-September.
In Arizona, Monsoon Season means frequent afternoon thunderstorms
that are more wind and lightning than rain.
Although the potential for heavy rain and subsequent flash flooding exists,
it is important that visitors are also aware of the dangers
of lightning on the rim.
In Grand Canyon National Park lightning strikes an average of
25,000 times per year
If the sound of thunder follows a lightning flash within 30 seconds,
Seek shelter inside a building or vehicle.
If this is not possible, Move well away from high points
such as ridges and the edge of the canyon.
Do not seek shelter beneath tall trees.
Use these guidelines to make a lightning safety plan:
Be aware of the nearest safe structure or vehicle and how long it will take to reach
it learn where emergency phones
are located on the trails.
Listen for thunder, watch for lightning, and observe the direction of storm movement.
Be vigilant of possible flash floods or falling rocks during or after storms.
If you find yourself in a dangerous situation with a thunderstorm approaching,
take cover immediately.
If your hair stands on end, a strike is looming meaning you should:
Move away from the canyon edge leave open areas immediately
and avoid rocky outcrops, lone trees, the tallest trees, poles, railings,
and bodies of water.
Get to a shelterâ like a building, vehicle with the windows closed,
or shuttle busâas quickly as possible.
For a shuttle bus, locate a designated bus stop.
If camping, wait out the storm in a safe structure or vehicle, not a tent.
Do not touch rock walls or any metal on vehicles or structures.
Monsoonal thunderstorms move through Arizona offering beauty,
excitement, and much-needed water, but dangerous and potentially deadly lightning
accompanies them.
Reduce your risk and learn how to avoid lightning dangers
by practicing basic safety precautions.
Remember: When thunder roars, go indoors!