Flash flooding is the sharpest natural threat at Grand Canyon-Parashant, with 5 recorded flash flood events in Mohave County alongside 11 thunderstorm wind incidents that can funnel dangerous runoff into canyon drainages with almost no warning. Parashant's remote, roadless terrain means help is hours away if a wash fills while you're camped in a low-lying spot, making situational awareness critical before you ever set up a tent.
Check the National Weather Service forecast for Mohave County each morning and identify the elevation of your campsite relative to any nearby washes or slot canyons — if thunderstorms are building to the southwest, move camp uphill immediately. Carry a NOAA weather radio since cell service is essentially nonexistent here, and pack a dry bag for electronics and sleeping gear so a fast-rising flood doesn't destroy your ability to navigate out. Parking your vehicle on high ground overnight is also a simple habit that protects your exit route.
Top recorded hazards in Mohave County
County dataFrom NOAA Storm Events (2024). Counts of recorded incidents — not all occurred at this park.
- Thunderstorm Wind 11
- Flash Flood 5
- Hail 2
- Flood 1
- Lightning 1
Gear keyed to this park's risks
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About Grand Canyon-Parashant National Monument
Despite the hardships created by rugged isolation and the lack of natural waters, Parashant has a long human history spanning more than 11,000 years, and an equally rich geologic history spanning almost two billion years. Full of natural splendor and a sense of solitude, this area remains remote and unspoiled, qualities that are essential to the protection of its scientific and historic resources.
Weather
Parashant is split between low elevation Mojave Desert on the west side and high elevation pinyon/juniper/ponderosa highlands on the east side. Expect sun on average 310 days per year. The summer months of June through September are very hot on the west side with highs above 100°F daily (80°F+ at night) below 2,500 feet. The high elevation east side is ~15°F cooler. Expect heavy afternoon monsoon storms June - September. Roads often stay muddy/icy above 5,500 feet December - February.