North Texas Storm Season: What Every DFW Homeowner Needs to Do Before the Next Big One

If you've lived in Dallas-Fort Worth for more than a year, you know the pattern. March through June, the sky turns green-gray, the sirens test on Wednesdays, and somewhere between a cold front and a dry line collision, a supercell drops 3 to 4 inches of rain in two hours on your neighborhood. Streets become rivers. Creek banks overflow. And homes flood.

This guide is what we wish every DFW homeowner would read in February. Not in May when the water is already rising. DFW storm damage patterns are consistent across Dallas, Plano, Frisco, McKinney, Arlington, Garland, Richardson, and everywhere in between. The patterns are consistent. The failures are predictable. And most of them are preventable with a few hours of work on a dry weekend.

Why DFW Is Different

National storm prep advice, the kind you get from a big-box hardware store blog, is written for a generic American home. It doesn't account for what makes North Texas uniquely vulnerable:

• Flash flooding on clay soil. DFW sits on expansive black clay. It absorbs water slowly and swells dramatically. When a storm drops 3 inches of rain in 90 minutes, which happens multiple times every spring, the soil can't absorb it fast enough. The water sheets across the surface and finds the lowest point, which is often your foundation. Homes on negative grade (where the yard slopes toward the house) flood from the outside in.
• Hail that breaks windows and roofs. DFW sits squarely in hail alley. The metroplex averages 3 to 4 major hail events per year with stones over 1 inch in diameter. A 2-inch hailstone hits your roof at about 70 mph. Roof damage from hail is the leading cause of water intrusion in DFW homes during spring storms, more than foundation flooding and more than plumbing failures during that season.
• Straight-line winds, not just tornadoes. Everyone watches for the funnel cloud. But 70+ mph straight-line winds, the kind that come with a bow echo on the leading edge of a squall line, do far more cumulative damage across DFW each year. They rip off shingles, launch patio furniture through windows, and snap tree limbs onto roofs. In a single severe storm event, roof damage from fallen limbs often exceeds tornado damage by a wide margin across DFW.
• Aging stormwater infrastructure. Dallas's storm drainage system was built for a different era. Streets in older Dallas neighborhoods with aging stormwater infrastructure flood regularly during even moderate downpours. When the street floods, the storm drains back up, and the water has nowhere to go but toward your house.
• Expansive clay + foundation cracks = water entry. The same soil movement that causes slab leaks also opens hairline foundation cracks, and during heavy rain, those cracks become pathways for water to seep into your home from below. Finished lower levels in Frisco and Plano homes can take on water through foundation cracks that stay dry for years until a single heavy rain event overwhelms the soil's absorption capacity.

The Storm Trigger: When to Actually Worry

Not every thunderstorm puts your house at risk. Here are the specific thresholds that the National Weather Service and local restoration experience show are significant:

• Rainfall rate above 1.5 inches per hour. This is the point where most DFW soils stop absorbing and start shedding. Check the National Weather Service Fort Worth radar for precipitation rate, not just accumulation.
• Hail size above 1 inch (quarter-sized). Roof damage probability jumps significantly at this threshold. If the NWS issues a Severe Thunderstorm Warning with "large hail" language, your roof is in play.
• Wind gusts above 60 mph. This is the speed at which healthy tree limbs start breaking. Dead limbs break at much lower speeds. If you have large trees within 30 feet of your house, 60 mph is your red line.
• Sustained rain over saturated ground. If you've had more than 2 inches of rain in the preceding 7 days, the soil is already near saturation. Even a modest storm becomes a flood risk because the ground can't take any more water.

Room-by-Room Risk Assessment: What Fails First

Here are the most common storm-related failure points in DFW homes, by room and in order of typical frequency:

Attic and Ceilings (Most Common Entry Point)

Roof damage is the #1 source of storm-related water intrusion in DFW. Wind-driven rain enters through damaged or missing shingles, penetrates the roof deck, saturates attic insulation, and drips onto your ceiling. What we see after every major storm:

• Ceiling stains that appear 12-48 hours after the storm, the water takes time to migrate through insulation before it's visible
• Water running down interior walls from attic saturation, especially around can lights, ceiling fans, and HVAC registers where the ceiling penetration provides an easy path
• Insulation that holds 5-10 gallons of water and never dries on its own, creating a mold hazard within days

What to do now: Walk your attic after any storm with hail or 60+ mph winds. Look for wet insulation, daylight through the roof deck, or water stains on the underside of the sheathing. If you can't safely access your attic, hire a professional to inspect it after major storms.

Lower Level and Foundation (Second Most Common)

If your home has a below-grade or at-grade finished lower level, common in Frisco and McKinney homes built on sloping lots, it is the most flood-prone area in a storm. Water enters through foundation cracks, cove joints (where the wall meets the floor), or window wells. Even homes on slab with negative grading can see water pond against the foundation and seep under baseboards.

• Check your grading right now, the soil should slope away from your foundation at least 6 inches over the first 10 feet. If it doesn't, regrade or add compacted fill.
• Make sure downspouts extend at least 5 feet from the foundation. Those 2-foot splash blocks from the builder are barely adequate for a light rain. During a DFW storm, they're useless.
• If you have window wells, verify the drains are clear and the well covers are intact.

Windows and Exterior Doors

Wind-driven rain finds every gap. Failed caulk, deteriorated weatherstripping, and window seals that dried out in the Texas sun all become entry points during a storm. We see this most often in homes built before 2000, where original window seals have had 20+ years of DFW heat to degrade.

• Inspect window caulk on the exterior, if it's cracked, peeling, or pulling away, recaulk now. A $12 tube of exterior silicone caulk prevents a $3,000 water damage restoration.
• Replace weatherstripping on exterior doors that has compressed or torn. You should not be able to see daylight around your door seal.

Garage

The garage is surprisingly vulnerable, and often overlooked because it's not "living space." But a flooded garage means water in your water heater closet, your HVAC air handler (if it's in the garage), and any stored items on the floor. More importantly, the wall between the garage and the house is not flood-proof, water migrates through it into the adjacent living area.

• Check your garage door bottom seal, it should compress evenly against the concrete. Replace it if it's cracked or doesn't seal. A good seal costs $30-$50.
• If your garage slab has settled, leaving gaps under the door, consider a garage threshold seal, a rubber ramp adhered to the concrete that the door compresses against. $80-$120 at any hardware store.
• Keep items off the garage floor during storm season. A $10 plastic shelving unit is cheaper than replacing water-damaged boxes.

Prevention Checklist: What to Do This Weekend

Every item on this list takes under an hour. Most cost under $50. All of them prevent damage that will cost you thousands. We'd rather you do these than pay us to fix what happens if you don't.

1. Clean your gutters and downspouts. Clogged gutters overflow against the fascia, rot the roof edge, and dump water directly against your foundation. Do this twice a year, once in February before spring storms, once in November after the leaves drop. The DFW live oaks drop leaves in March, not fall, so February is the right call.
2. Extend downspouts to 5 feet minimum. Buy the flexible black corrugated extensions, $8 each at Home Depot or Lowe's. They connect in 30 seconds.
3. Walk your roof (or hire someone to do it). Look for missing, cracked, or curling shingles. Pay special attention to the ridge cap and around plumbing vents. If you're not comfortable on a ladder, we know good roofers. But get it inspected before storm season, not after.
4. Trim tree limbs within 10 feet of your roof. A limb that overhangs your roof in calm weather becomes a spear in 70 mph wind. Tree limbs through roofs are a real risk in 70+ mph straight-line winds.
5. Test your sump pump (if you have one). Pour a 5-gallon bucket of water into the sump pit and verify the pump activates and discharges properly. If it doesn't cycle on, you have a dead pump, replace it before the storm, not during.
6. Check your roof for hail damage from the ground. Look for dents in roof vents, chimney caps, and metal flashing. Look for granular asphalt material in your gutters, that's shingle erosion. If you see it, get a roof inspection. Most roofing companies in DFW do free storm inspections during spring.
7. Seal exterior wall penetrations. Cable lines, phone lines, hose bibs, outdoor electrical outlets, every penetration through your exterior wall is a potential water entry point. A $6 tube of exterior silicone caulk seals them all.
8. Move valuables off the floor in flood-prone rooms. If you have a finished lower level or a room with known flooding history, elevate electronics, documents, and sentimental items at least 12 inches off the floor. Milk crates. Cinder blocks. Anything.

What to Do When Prevention Fails

If water is coming into your house right now, ignore everything above and do this:

1. Safety first. If water is near electrical outlets, panels, or appliances, do not enter until the power is off. Call Oncor at 888-313-4747 for emergency disconnect if you can't reach your breaker safely.
2. Stop the water if you can. For roof leaks, a tarp in the attic can redirect water into a bucket. It's not a fix, but it limits spread. For foundation seepage, sandbags or even rolled-up towels along the entry point slow the flow.
3. Document before moving anything. Take wide-angle photos and video of every affected room before you move a single item. This is your insurance record.
4. Call us at (469) 525-2254. We respond 24/7 during storm season. We'll dispatch a crew with professional-grade equipment. We handle water extraction and storm damage restoration process, and if there's roof damage, we can recommend trusted local roofing contractors.
5. Call your insurance company. File the claim as soon as you have photos. Most carriers have 24/7 claims lines specifically for storm events. The sooner you file, the sooner an adjuster is assigned.

When to Call Us (And When You Can Handle It Yourself)

We'd rather you not call us for things you can handle yourself. Honest truth:

• You can handle: A small ceiling stain from a known roof leak that you've already had repaired, where the drywall is dry to the touch and the attic insulation above it is dry. Cut out the stained drywall, patch it, paint it. $50 in materials.
• Call us for: Any time water has been sitting for more than 24 hours. Any time water has migrated into wall cavities, under flooring, or through more than one room. Any time you smell mustiness. Any time the water came from outside (assume Category 3 contamination). Any time you're not 100% sure the affected materials are completely dry.

Industry data consistently shows that water damage responded to within two hours costs significantly less to remediate than damage left overnight - often by a factor of two or more. Water damage compounds by the hour. Don't wait to see if it dries on its own, it won't. Not in DFW humidity. Not with our clay soil. Not with the way North Texas homes are built.

Got questions about your specific situation? Call us at (469) 525-2254. We'll talk through what you're seeing and tell you honestly whether you need us or can handle it yourself. We're happy to talk through your situation. Learn more about our storm damage restoration services, visit our service area page, or browse our FAQ.