What is a heat dome? It's like 'a lid on a pot'
10 months ago
- #extreme-weather
- #heat-dome
- #climate-change
- A heat dome is a weather phenomenon where high pressure lingers, trapping warm air near the surface and suppressing clouds and precipitation.
- The current heat dome affects nearly 160 million people in the eastern U.S., with temperatures soaring past 95°F and heat index values exceeding 100°F in many areas.
- Heat domes act like a 'lid on a pot,' trapping heat and allowing it to build over multiple days or even weeks.
- The jet stream's movement influences the location of heat domes; currently, it's allowing the dome to persist in the eastern U.S.
- Heat domes can create feedback loops, with high pressure leading to dry weather, which further intensifies the heat.
- Extreme heat linked to climate change has shattered records, with 2023 and 2024 being the hottest years on record.
- Heat domes pose health risks, especially to children and those with existing health conditions, and can lead to heat-related deaths.
- Experts recommend precautions like staying hydrated, taking breaks, and using sun protection during extreme heat.
- Heat domes have affected various U.S. regions in recent years, including the West, Great Plains, and Northwest, causing record temperatures and fatalities.
- Global warming trends show May 2025 as the second warmest May on record, with above-average temperatures across all continents.