Extreme Heat risk in Georgia

Extreme Heat in Georgia: A Serious and Growing Threat

Georgia’s subtropical climate makes extreme heat one of its most significant natural hazards. While the state is no stranger to hot summers, the combination of high temperatures and intense humidity creates dangerous conditions, especially from May through September. According to the Georgia Emergency Management and Homeland Security Agency, extreme heat events are becoming more frequent, more intense, and longer-lasting, posing serious risks to communities across the state.

Urban areas like Atlanta, Columbus, and Savannah are particularly vulnerable due to the urban heat island effect, where concrete, asphalt, and buildings absorb and retain heat, making cities significantly warmer than surrounding rural areas. But rural regions are not immune; agricultural workers, outdoor enthusiasts, and residents in poorly insulated homes also face severe heat exposure. The heat index, which factors in humidity, frequently exceeds 100°F and can reach 110°F or higher during heat waves. Nighttime offers little relief, as temperatures often stay in the 80s, preventing homes and bodies from cooling down.

The National Weather Service stresses that extreme heat is one of the deadliest weather phenomena, causing more deaths annually than hurricanes, tornadoes, or floods. In Georgia, the hottest months are typically July and August, but heat waves can strike in June and September as well. Climate projections suggest that by mid-century, Georgia could see 30 to 60 additional days per year with heat indices above 100°F, making preparation essential.

How It Affects Homes

Extreme heat can take a toll on virtually every part of your home. Roofing materials, especially asphalt shingles, can crack, curl, and degrade when exposed to prolonged high temperatures. Wood siding and decks may warp or split. Georgia’s clay-rich soils are also prone to shrinking and expanding during intense heat, which can cause foundation movement and cracks in walls or slabs.

Your HVAC system works overtime during heat waves, and an overworked air conditioner can fail when you need it most. Power outages become more likely as demand for electricity soars, leaving homes without cooling and creating a cascade of risks, from spoiled food to heat-related illness. High heat can also damage appliances and electronics, and the risk of fire increases due to electrical strain.

From an insurance perspective, standard homeowners policies generally do not cover damage caused directly by heat. For example, if your roof simply deteriorates from sun exposure, that is considered normal wear and tear and is not covered. However, if heat indirectly causes a fire or lightning strike (which can happen with electrical surges), resulting damage may be covered. Flood damage from severe thunderstorms that often accompany heat waves is covered only under a separate flood insurance policy. The Ready.gov guide emphasizes maintaining your home to minimize these risks and filing claims only when direct physical damage occurs from a covered peril.

How to Prepare Your Home

• Service your HVAC system before summer begins. Replace filters, check refrigerant levels, and ensure the unit operates efficiently. Consider a smart thermostat to manage usage.
• Seal air leaks around windows, doors, and attic hatches with weather stripping and caulking to keep cooled air inside and hot air out.
• Add or upgrade insulation, especially in the attic, to reduce heat transfer. Reflective insulation or radiant barriers can significantly lower attic temperatures.
• Install window coverings such as shades, blinds, or reflective films to block solar heat gain during the hottest parts of the day.
• Improve ventilation in attic and crawl spaces. Heat buildup can damage roofing from below, so install vents or attic fans to exhaust hot air.
• Use energy-efficient windows or add storm windows. If replacement isn’t feasible, use removable insulation panels or even cardboard covered with aluminum foil to reflect heat.
• Plant shade trees strategically around your home, especially on western and southern exposures, to block direct sunlight and lower cooling costs.
• Check your roof for loose or damaged shingles before summer and make repairs. Consider reflective or “cool” roofing materials when it's time to replace.
• Prepare for power outages: Have backup power sources for essential equipment like medical devices, and keep a battery-powered radio and fans. A portable generator can keep HVAC or fans running, but never use one indoors.
• Maintain fire safety: Ensure smoke and carbon monoxide detectors work, and keep a fire extinguisher accessible, as heat waves increase fire risk.

Frequently Asked Questions

Is extreme heat damage covered by homeowners insurance?

Most standard homeowners policies do not cover direct heat damage, such as warped siding or roofing deterioration, because it falls under normal wear and tear. However, if extreme heat leads to a fire, lightning strike, or other covered peril, the resulting damage may be covered. Check with your insurance agent to understand your specific policy.

Can extreme heat cause my foundation to crack?

Yes, in Georgia’s expansive clay soils, extreme heat can cause the ground to shrink and pull away from your foundation. This can lead to shifting, settling, and cracks in the foundation, walls, or floors. While this type of damage is not typically covered by insurance, regular watering of the soil around your foundation during dry spells can help minimize movement.

What should I do if my air conditioner stops working during a heat wave?

The CDC recommends seeking alternative shelter, such as a public cooling center or a friend’s home, if your home becomes dangerously hot. In the meantime, close curtains, use cross-ventilation with fans, and stay hydrated. Do not use a gas oven or stove to cool your home, and never run a generator inside. Once it cools down, have a licensed HVAC technician inspect the unit.

Official Resources

• Georgia Emergency Management and Homeland Security Agency
• National Weather Service – Heat Safety
• Ready.gov – Extreme Heat
• CDC – Extreme Heat