Hurricanes risk in Colorado

Hurricane Risk in Colorado: Geography and Seasonality

Colorado is landlocked and located more than 1,000 miles from the nearest coast, so a direct hurricane landfall is physically impossible. The state’s mountain ranges act as a natural barrier that breaks up tropical cyclones as they move inland. For this reason, the National Risk Index rates Colorado as level 1 (very low) for hurricane risk.

However, Colorado can still feel indirect effects from hurricanes or tropical storms that originate in the eastern Pacific or the Gulf of Mexico. When these systems move inland, their moisture can be drawn into the atmosphere and carried over the Rocky Mountains. This often happens during the late summer and early fall, from August through October, when the Atlantic and Pacific hurricane seasons peak. The remnants of storms such as Hurricane Nora (1997) and Tropical Storm Blas (2016) have brought heavy rainfall to Colorado, causing flash flooding and mudslides.

Which Areas Are Most Exposed?

While the entire state can experience heavier rainfall from tropical remnants, the eastern plains and the eastern slopes of the Front Range are more likely to see organized bands of rain. The steep terrain of the foothills and canyons is especially vulnerable to flash flooding and debris flows, as water quickly funnels into narrow valleys. Recent burn scars from wildfires are also at higher risk for mudslides following intense rain. The western slope is less affected due to the rain shadow effect of the Continental Divide.

It is important to distinguish between hurricane remnants and the more common monsoon season. Summer monsoonal moisture from Mexico often brings thunderstorms, but tropical remnants are distinct because they carry even more moisture and can produce prolonged, widespread rainfall. Local National Weather Service offices track these systems carefully and issue flood watches and warnings when needed.

How It Affects Homes

The main threat to homes in Colorado from hurricane remnants is not wind—hurricane-force winds are extremely rare at this altitude. Instead, the primary risk is water damage from heavy rainfall. Flash flooding can overwhelm storm drains and roads, and basements are particularly vulnerable to water seepage or sewage backup. If the ground is already saturated from monsoon thunderstorms, even moderate rain can lead to flooding in low-lying areas.

Homes in mountainous areas may face damage from mudslides or debris flows, which can push soil and rocks against foundations and lower-level walls. Water can also infiltrate roofs through damaged shingles or skylights during intense rain, leading to interior mold and structural rot. Additionally, tropical remnants often occur during the tail end of wildfire season, so ash and sediment can mix with rainwater to create particularly destructive flows.

From an insurance perspective, most standard homeowners policies in Colorado do not cover flood damage. Flood insurance is sold separately through the National Flood Insurance Program (NFIP) and some private insurers. Even if your home is not in a FEMA-designated flood zone, heavy rainfall from a tropical remnant can cause flooding, so it is wise to consider a flood policy. Contact the Colorado Division of Insurance or your agent to understand your coverage. Also, wind damage is typically covered by homeowners insurance, but flood damage is not—a distinction that confuses many residents. Always document your belongings and keep an inventory in case you need to file a claim.

How to Prepare Your Home

• Clean and inspect gutters and downspouts to ensure they direct water away from your foundation.
• Install a sump pump with a battery backup in your basement, and test it before the rainy season.
• Grade your yard so the slope carries water away from the house rather than toward it.
• Seal basement walls and floor cracks to reduce water seepage during heavy rain.
• Clear debris from drainage ditches and culverts near your property.
• If you live in a canyon or burn scar area, consult local emergency management about debris flow warning signs and evacuation routes.
• Elevate important utilities, such as water heaters and electrical panels, if you live in a flood-prone area.
• Consider installing backflow valves on sewer lines to prevent sewage backup.
• Create a basic emergency kit with water, food, medications, flashlights, and a weather radio, since flooding may cut off utilities and roads.
• Review your insurance policy each year. Ask your agent specifically if flood coverage is included or available for your address.

Frequently Asked Questions

Can a hurricane actually hit Colorado?

No. Colorado is located far inland, and the Rocky Mountains break up tropical storms before they reach the state. A fully formed hurricane has never made landfall in Colorado, and it is not meteorologically possible based on the state’s distance from warm ocean waters.

What should I do if a tropical storm remnant is forecast for my area?

Monitor local forecasts from the National Weather Service and the Colorado Division of Homeland Security and Emergency Management. If heavy rain is expected, avoid driving through flooded roadways, move valuable items off your basement floor, and be prepared to evacuate if officials issue a flash flood warning.

Does standard homeowners insurance cover flooding from hurricane remnants?

No. Standard homeowners insurance policies specifically exclude flood damage. You need a separate flood insurance policy through the NFIP or a private insurer. This coverage is available to most Colorado homeowners even if they are not in a designated high-risk flood zone.

Official Resources

• Colorado Division of Homeland Security and Emergency Management
• NOAA National Hurricane Center
• Ready.gov – Hurricanes
• FEMA Hurricane Preparedness