The defining danger of the current heat dome is not the triple-digit daytime high. It is the lack of cooling after sunset.
One of the planet’s strongest heat domes will soon scorch the East Coast. Record-shattering heat spreads east as the system stretches out. Many US cities will see record overnight temperatures. No relief. That is the lethal variable.
💡 Frequently Asked Questions (FAQ)
- Q: What is a heat dome?
- A: A heat dome is a high-pressure system that traps hot air beneath it, creating a ‘dome’ of extreme heat that can persist for days or weeks, often breaking temperature records.
- Q: Why are overnight temperatures more dangerous than daytime highs during a heat dome?
- A: Overnight lows that stay high prevent the body from cooling down after a hot day, increasing heat stress and the risk of heat-related illnesses, especially for vulnerable populations without air conditioning.
- Q: How can you survive a heat dome when nights stay hot?
- A: Stay hydrated, use fans or air conditioning, avoid strenuous activity, and check on elderly neighbors. Even a few hours of cooling at night is critical for recovery.