Arizona Dust Storms and Your Roof: Haboob Damage, Prevention and Cleanup

What a haboob is

A haboob is a wall of dust pushed ahead of a thunderstorm. When rain-cooled air falls out of a storm and hits the ground, it spreads out fast in every direction as an outflow. Crossing dry desert and bare farm fields, that outflow picks up loose dirt and carries it as a moving wall that can be miles wide and thousands of feet tall.

Haboobs are most common early in the monsoon, from June into August, when storms build over dry ground. The National Weather Service issues a Dust Storm Warning when blowing dust cuts visibility to a quarter mile or less, and visibility can drop to near zero in seconds.

The Valley's best-known example came on July 5, 2011. The NWS estimated the dust wall at about 5,000–8,000 feet tall when it reached Phoenix, and it was close to 100 miles wide. More recently, on August 25, 2025, a haboob rolled north through Pinal County and into the metro, followed by severe thunderstorms. The NWS reported gusts of roughly 50–65 mph across the Phoenix area, trees came down, and more than 60,000 customers in Arizona lost power. The 2026 season's dust arrived early: a dust storm swept through Ahwatukee and south Phoenix on June 18, three days into the monsoon.

Dust storms are dangerous on the road as well. A study by the National Weather Service and the University of Arizona ranked them the third deadliest weather hazard in Arizona, which is why ADOT's advice is Pull Aside, Stay Alive.

How dust storms damage roofs

Most dust storm roof damage comes from four things.

• Wind: the outflow behind a dust wall can carry severe gusts, and the thunderstorm that follows may add microburst winds. Wind lifts shingles that have lost their seal, slides loose tiles, peels back flashing and edge metal, and can tear at the edges of flat-roof membranes and coatings.
• Flying debris: patio furniture, trampolines, palm fronds, tree limbs, signs and loose construction material become projectiles. Impacts crack tile, puncture foam and dent metal.
• Clogged drainage: dust, sand and leaves pack into scuppers, canales, roof drains, gutters and tile valleys. If rain follows within minutes or days, water backs up, ponds on flat roofs and spills sideways under tile.
• Dust under tile and in the attic: fine dust works under tile and around vents. Layers of dirt, leaves and nesting material along the tile underlayment slow drainage and hold moisture against it.

Dust also wears on exposed surfaces over time, along with UV. It isn't usually the reason a roof fails, but on foam roofs and coated surfaces it adds to the normal coating wear that has to be watched.

Which roofs and areas take the most

Every part of the metro can see a haboob, but some homes are more exposed:

• Homes on the edge of open desert or farmland, which is common in the southeast and southwest Valley and in Pinal County communities along the I-10 corridor.
• Homes with flat or low-slope roofs, parapets and canales, where dust settles behind parapets and in drains.
• Tile roofs with debris-packed valleys, missing bird stops or broken tiles, where dust and water get underneath more easily.
• Older shingle roofs whose sealant strips no longer hold.
• Roofs with rooftop equipment: evaporative coolers, AC units and solar panels, all of which collect dust and debris around them.

By material:

• Tile: hard-wearing and heavy, but loose or broken tiles can move, and tile valleys collect a lot of dust.
• Shingle: vulnerable to wind lifting tabs, especially near edges, ridges and hips.
• Foam and other flat roofs: prone to clogged drains and ponding; debris can puncture foam.
• Metal: handles wind well when properly fastened, but can dent from large debris.

Before dust storm season: what to do (April to mid-June)

Preparation for haboobs is mostly the same as preparation for the monsoon, with extra attention to drainage and loose items.

• Have the roof inspected in spring. Fix broken or slipped tiles, re-seal lifted shingles, and secure loose flashing, ridge caps and edge metal.
• Clear all scuppers, drains, canales, gutters and tile valleys so there's room for dust and rain.
• Check bird stops at the tile eaves and critter guard around solar panels. Gaps let in dust, debris and nesting birds.
• Trim trees and palms so fronds and limbs can't drag across or drop onto the roof.
• Walk the yard and roof line for things that can fly: patio umbrellas, cushions, light furniture, trampolines, loose boards and anything left on a flat roof after other work.
• Check rooftop equipment. Make sure AC and evaporative cooler panels are fastened and that equipment stands are secure.
• Take dated photos of each roof slope so you have a baseline if a storm does damage.

During a dust storm

When a Dust Storm Warning goes out or you see the wall coming:

• If you're driving, follow ADOT's advice: pull completely off the road, turn off your lights, set the brake and take your foot off the brake pedal, and wait it out.
• At home, close windows and doors, and turn off evaporative coolers so they don't pull dust into the house.
• Bring in or tie down anything loose in the yard if there's still time. Don't go outside once the dust and wind arrive.
• Stay off ladders and the roof. Winds rise suddenly, visibility drops to nothing, and thunderstorms with lightning often follow.
• If power goes out, keep flashlights handy and stay clear of downed lines.

Haboobs often pass in minutes, but the storm behind them can bring heavy rain and stronger wind. Treat the dust as the first part of the storm, not the whole storm.

After a dust storm: cleanup and checks

Once the wind and rain have passed and it's daylight, do a ground-level check.

• Look for tiles, shingles, flashing or ridge caps in the yard, on patios or in the pool.
• Look for debris on the roof: branches, palm fronds and items from neighboring yards.
• Check gutters, downspouts and scuppers. If they're packed with dust and debris, clear what you can safely reach from a ladder, or have it done before the next storm.
• On flat roofs, look for standing water a day or two later. Ponding after a dust storm usually means a blocked drain.
• Check ceilings and the attic for new stains or wet spots, especially if rain followed the dust.
• Look at rooftop equipment. Evaporative cooler pads and AC coils may need cleaning, and solar panels may need rinsing.

Don't pressure-wash a tile or shingle roof to get dust off. High pressure can crack tile, strip granules from shingles and drive water under the roofing. Rain or a light rinse handles surface dust; debris in valleys and drains should be removed by hand.

If you see damage or new leaks, photograph everything before cleanup and call for an inspection. Our crews handle emergency leak response 24/7.

Insurance: storm damage vs. wear

Coverage depends on your policy, so read it and talk to your insurer. Policies often treat sudden wind damage from a specific storm differently from gradual wear, and dust-related issues such as clogged drains, aged coatings or a slow leak from debris buildup are usually considered maintenance.

If a storm damaged your roof:

• Photograph the damage and the debris before cleanup.
• Note the date and time of the storm and keep any NWS warnings.
• Protect the home from further damage and keep receipts.
• Report it to your insurer promptly.

We can inspect, document the damage with photos and write the estimate in Xactimate line items, and can meet your adjuster on site. Your insurer decides what is covered.

Keeping a dust-prone roof in shape

Roofs in dust-prone parts of the Valley do best with regular cleaning of drains and valleys and a yearly look at tiles, flashing and coatings. That is what our maintenance plans are designed around. Every visit includes a full inspection with a photo report and clearing debris from valleys and roof drains; the Premium plan ($349 a year) adds gutters, minor repairs up to $200 and two visits a year, one of them before the monsoon. If a repair turns up, roof repairs commonly run from a few hundred dollars to about $5,000, depending on the roof and access.

If your tile roof keeps collecting dust and water underneath because the underlayment is old and brittle, a tile underlayment replacement fixes the root cause and reuses your tile, at about $4–7 per square foot for concrete tile. Prices vary with size, pitch, access and material.

Checklist

• Get a spring roof inspection (high priority): Fix loose tiles, lifted shingles and loose flashing or edge metal before June.
• Clear drains, scuppers, canales and valleys (high priority): Make room for dust and rain so water doesn't back up when a storm follows the dust.
• Secure loose yard items (high priority): Patio umbrellas, cushions, light furniture and trampolines become projectiles in outflow winds.
• Trim trees and palm fronds near the roof (medium priority): Keep limbs and fronds from dragging across or falling onto the roof.
• Check bird stops and solar critter guard (medium priority): Gaps let dust, debris and nesting birds under tile and panels.
• Secure rooftop equipment (medium priority): Check that AC panels, evaporative coolers and equipment stands are fastened.
• Photograph your roof before the season (medium priority): Dated photos of each slope help separate new storm damage from old wear.
• Turn off evaporative coolers when dust hits (low priority): Close windows and doors so the cooler doesn't pull dust into the house.
• Walk the property after each dust storm (high priority): Look for roofing on the ground, debris on the roof and dents in vents and gutters.
• Clear debris and dust from drainage after the storm (high priority): Clean before the next rain so flat roofs don't pond and tile valleys don't overflow.
• Check ceilings and attic for leaks (medium priority): Especially when rain followed the dust.
• Don't pressure-wash tile or shingles (medium priority): High pressure cracks tile, strips granules and drives water under the roof.
• Clean cooler pads, AC coils and solar panels (low priority): Dust buildup reduces performance and can hold moisture against the roof.

Related

• Roof Maintenance Plans
• Roof Repair
• Tile Underlayment Replacement
• Foam Roofing
• Monsoon Roof Checklist
• Storm Damage Response Guide
• Monsoon Roof Damage Guide
• Gilbert Roofing