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Colorado Thunderstorms: Is Your Gutter System Ready?

  • Writer: Victoria Krumtum
    Victoria Krumtum
  • 12 hours ago
  • 3 min read

Colorado homeowners know the drill. One minute it's sunny and 80 degrees, and the next minute dark clouds roll in, thunder shakes the windows, and rain is falling sideways.

While most people focus on lightning and hail, one of the biggest risks during Colorado thunderstorms is water. A sudden downpour can overwhelm clogged gutters, blocked drains, or damaged downspouts, sending water exactly where you don't want it—against your foundation, into window wells, across walkways, and into landscaping.

Before the next storm hits, now is the perfect time to make sure your gutter system is ready.

Why Colorado Thunderstorms Are Hard on Gutters

Denver city streets covered with the hail and leaves easily become blocked.

Leaves knocked down by hail can easily become blocked before the next storm,


According to the National Weather Service, severe thunderstorms can produce heavy rainfall, damaging winds, and hail capable of causing significant property damage. Unlike areas that receive steady rainfall, Colorado often experiences short-duration, high-intensity storms.

A thunderstorm can dump a significant amount of rain in a short period of time. If your gutters, downspouts, or underground drains aren't flowing properly, water can back up almost immediately.

Common thunderstorm-related gutter problems include:

  • Overflowing gutters

  • Downspout backups

  • Underground drain clogs

  • Washed-out landscaping

  • Foundation water intrusion

  • Erosion around the home

  • Water crossing sidewalks and driveways

Even a gutter system that worked fine last year can develop problems over the winter due to debris buildup, shifting soil, freeze-thaw cycles, or root intrusion.

The Hidden Problem: Underground Drain Clogs

Check you gutter drains to make sure they are ready to handle the next Colorado Thunderstorm.
Check your home's underground drains attached to your downspouts to make sure they are clear and your entire gutter system is ready for Colorado thunderstorms.

One of the most common service calls we receive after a thunderstorm starts with a homeowner saying:

"The crew just cleaned my gutters, but the gutter by the garage is still overflowing."

In many cases, the gutter isn't the problem.

The underground drain attached to the downspout may be blocked.

Over time, roots, dirt, roof grit, leaves, and other debris can accumulate inside underground drainage lines. During a heavy thunderstorm, water reaches the blockage and has nowhere to go.

The result?

Water backs up into the gutter and pours over the edge, making it appear as though the gutter itself is clogged.

At Hometown Gutter, we've pulled surprisingly large root balls from underground drainage systems throughout the Denver metro area.

Signs Your Gutters May Not Handle the Next Thunderstorm

Watch for these warning signs before the next thunderstorm:

  • Water spilling over the front edge of gutters

  • Downspouts that drip at seams or elbows

  • Gutters pulling away from the fascia

  • Standing water near the foundation

  • Soil erosion below downspouts

  • Water backing up near underground drains

  • Stains on siding beneath gutters

If you notice any of these issues during a light rain, they'll likely become much worse during a severe thunderstorm.

Hail and Wind Damage to your Gutters After a Colorado Thunderstorm

Tree hit by lightning in a Spring thunderstorm in Aurora, Colorado.
Damage after thunderstorm, when lightning hits a tree in Southeast Aurora.

Colorado's thunderstorm season also brings hail and strong winds.

After a severe storm, inspect your gutters for:

  • Dents from hail impacts

  • Loose gutter hangers

  • Bent downspouts

  • Pulled-apart seams

  • Damaged gutter guards

Even small damage can affect how water flows through the system during the next storm.

How to Prepare Your Gutters for Colorado Thunderstorm Season


The best time to address drainage problems is before the weather turns severe.

A few preventive steps can make a big difference:

Schedule a Gutter Cleaning

Removing leaves, pine needles, roof grit, and debris helps ensure water can move freely through the system.

Check Your Downspouts

Make sure downspouts are securely attached and directing water away from the home.

Inspect Underground Drains

If you've noticed slow drainage, standing water, or overflow near one downspout, an underground drain inspection may be worthwhile.

Repair Damaged Gutters

Small leaks and loose sections often become major problems during heavy rain events.

Consider a Drainage Evaluation

Some homes simply receive more roof runoff than others due to roof design, slope, or lot grading. A drainage review can identify potential trouble spots before water damage occurs.

Protect Your Home Before the Next Colorado Thunderstorm

Colorado's weather can change quickly, but your gutter system should always be ready.

A properly functioning gutter and drainage system helps protect your foundation, landscaping, siding, walkways, and basement from costly water damage.

If you've noticed overflowing gutters, slow drains, or drainage concerns around your home, now is the time to address them—before the next thunderstorm rolls through.

Hometown Gutter provides gutter cleaning, gutter repair, underground drain cleaning, seamless gutter installation, and drainage solutions throughout the Denver metro area.

Call (720) 440-RAIN (7246) or visit HometownGutter.com for a free, no-pressure estimate.

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