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14ers Weather Guide

14ers Weather Guide: 7 Signs of Impending Mountain Storms

The tallest peaks in the Colorado Rocky Mountains, fondly known as 14ers, are a hiker’s dream. With their pristine ecosystems, panoramic vistas, and challenging trails, they offer an unparalleled outdoor experience. However, this high-altitude wilderness demands respect, particularly when it comes to weather. The Rockies are known for their unpredictable weather, which can swiftly transition from sunshine to blizzard conditions in mere minutes. Understanding weather patterns and recognizing early signs of a storm can make the difference between a rewarding trek and a hazardous ordeal.

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Weather Patterns on the Colorado 14ers

The Rockies’ unique climate is primarily driven by their altitude and geography. The mountains’ height affects temperature and precipitation patterns, often leading to cooler, wetter conditions than surrounding lower-lying areas. Moreover, the Rockies act as a barrier to weather systems moving eastward, generating sudden and severe storms. Afternoon thunderstorms are a common summer occurrence, while winter can bring heavy snowfall and bitter cold.

In such an environment, staying alert and understanding weather indicators can ensure safety and enjoyment on your hiking or camping adventure. Let’s delve into seven key signs of impending bad weather to watch for when exploring the Colorado 14ers.

Rocky Mountain National Park Weather

7 Signs of Impending Bad Weather on 14ers

Here are seven red flags to watch for while hiking and climbing 14ers. Weather can change quickly, don’t forget to stop and look behind you from time to time.

1. Changing Cloud Formations

Clouds are one of the most visible and reliable indicators of weather changes. In the Rockies, cumulus clouds that start building up during the morning often signal an impending afternoon thunderstorm. If you notice these large, puffy clouds growing vertically and darkening at the base, consider seeking shelter or making your descent. Stratus clouds, on the other hand, are low-hanging and gray, often signaling steady rain or snow.

2. Shifts in Wind

While a pleasant breeze can be a welcome relief on a challenging hike, sudden shifts in wind direction or speed often precede a storm. Mountain winds can also funnel through valleys, increasing speed and bringing colder air from higher altitudes. If the wind picks up significantly or changes direction, it’s time to check your other weather signs.

3. Rapid Temperature Drops

Mountain weather is known for its extreme temperature swings. However, a rapid drop in temperature is often an indicator of an incoming storm. Cold fronts frequently lead storm systems, bringing a noticeable chill before the rain, snow, or sleet arrives. If you suddenly find yourself reaching for your jacket, it might be time to find a safe spot to wait out a storm.

4. Increase in Humidity

If the morning is unusually humid, it could be a sign of an approaching afternoon thunderstorm. You might notice this as dew or wetness on vegetation, or the air may feel heavier than usual. While measuring humidity on the trail can be difficult, your senses can often clue you in on this weather shift.

5. Falling Barometric Pressure

Barometric pressure refers to the weight of the air in the atmosphere. A steady decrease in barometric pressure often precedes a storm. Outdoor watches and weather-specific devices often include barometers. Monitoring this reading throughout your hike can help you anticipate weather changes.

6. Changes in Animal Behavior

Observing local fauna can also offer weather clues. Birds, for instance, often fly lower before a storm, and animals in general may become quieter as they seek shelter from the impending weather. While this is less reliable than some of the other signs, it’s another piece of the puzzle in understanding your environment.

7. Presence of Static Electricity

Feeling static electricity in the air, such as your hair standing on end or a tingling sensation, could indicate an imminent lightning strike—a clear sign of a storm. This is an immediate danger signal, and you should seek shelter as low and as safely as possible.

Lightning on 14ers

Conclusion: Be Prepared, Stay Safe

Weather in the Rockies is as much a part of the adventure as the stunning vistas and challenging trails. Understanding and anticipating it not only ensures your safety but can also enhance your appreciation of this majestic landscape. As with all aspects of nature, respect and preparedness go a long way. Check out additional resources about Colorado 14ers weather conditions and patterns below, along with our FAQs on this topic. Safe travels on the trails!

Additional Resources:

Here are some more websites and resources for further reading:

FAQs on 14er Weather

A: The temperature at the summit of a 14er can vary greatly depending on the time of year, weather conditions, and specific altitude. Generally, for every 1,000 feet you climb, the temperature can drop about 3.5 degrees Fahrenheit. Considering Colorado’s 14ers range from about 14,000 to 14,400 feet, the temperature at the top can be significantly colder than at the base. Always check the weather forecast before your hike and remember that it can change rapidly.

A: Colorado’s mountain temperatures fluctuate significantly throughout the year. In the summer, daytime temperatures can reach into the 70s or 80s Fahrenheit at lower elevations but drop sharply as you ascend. Nighttime temperatures can dip into the 30s or lower. In winter, temperatures often fall below freezing, and high peaks can experience extreme cold. Always come prepared for a wide range of temperatures.

A: The best months to climb a 14er in Colorado are typically from late June through early September. During this time, most trails are free of snow and the weather is generally warmer. However, this period also corresponds with Colorado’s monsoon season, meaning afternoon thunderstorms are common. Always start your hike early in the morning to minimize exposure to thunderstorms, and always check the local weather forecast before heading out.

A: Afternoon thunderstorms are common in Colorado due to the heating of the day. As the sun warms the ground, it causes air near the surface to heat up and rise, forming clouds and, often, thunderstorms. This is particularly true in the mountains, where the high elevation and rugged terrain enhance this upward motion of air. The storms usually start to build in the early afternoon and can last into the evening.

A: If caught in a thunderstorm on a 14er, your immediate priority should be to reduce your risk of being struck by lightning. Descend immediately, aiming to get below the treeline as quickly and safely as possible. Avoid isolated trees and high, exposed places. If you cannot get below the treeline, find the lowest point of open area and make yourself a small target by crouching down with your feet together, ideally on your backpack to minimize contact with the ground. Always avoid bodies of water. Never shelter under a tree. Wait at least 30 minutes after the last thunder before resuming your hike. Always remember, turning around before summiting is a valid choice if a storm is brewing. Your safety is always the priority.




Alex Derr, Founder of The Next Summit

Alex Derr is an Eagle Scout, climber, and environmental policy expert located in Denver, Colorado. He created The Next Summit to help others stay safe exploring the mountains and advocate to preserve the peaks for the future. Follow him on Linkedin or Twitter or click here to contact him.





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