Thunderstorm wind is the dominant hazard at Amache National Historic Site, with 14 recorded events in Prowers County putting it well ahead of any other weather threat. These storms roll across the southeastern Colorado plains with little warning, often pairing damaging gusts with the 10 documented hail events logged in the same period. The open, flat terrain around the site offers virtually no natural shelter when conditions turn.
When a storm builds on the horizon, get back to your vehicle immediately — the exposed grounds give you nowhere to wait it out safely. Pack a NOAA weather radio or download the NWS app before you arrive, since cell coverage in rural Prowers County is unreliable. If hail is in the forecast, use a windshield sunshade or heavy moving blanket to protect your vehicle's glass and roof while parked at the site.
Top recorded hazards in Prowers County
County dataFrom NOAA Storm Events (2024). Counts of recorded incidents — not all occurred at this park.
- Thunderstorm Wind 14
- Hail 10
- Funnel Cloud 1
Gear keyed to this park's risks
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About Amache National Historic Site
Amache, also known as the Granada Relocation Center, near Granada, Colorado was one of ten incarceration sites established by the War Relocation Authority during World War II to unjustly incarcerate Japanese Americans. Over 10,000 people, most American citizens, were incarcerated at Amache from 1942 to 1945.
Weather
The site is located in Colorado on the High Plains, an arid, windy, and sunny environment. Temperatures and conditions can be extreme in this region, with hot, arid summers that include occasional thunderstorms and tornadoes, as well as cold and snowy winters.