A sweltering 'heat dome' has entrenched itself over large parts of the United States, unleashing record-breaking temperatures and prompting urgent health warnings across multiple states. Meteorologists report this high-pressure weather system is creating a dangerous heat trap that could persist for weeks.
States Under the Heat Dome
The most severely affected regions include:
- Southwest US (Arizona, Nevada, California)
- Southern Plains (Texas, Oklahoma)
- Parts of the Southeast
Record Temperatures and Impacts
Several areas have already smashed previous temperature records:
- Phoenix, Arizona reached 115°F (46°C)
- Las Vegas, Nevada hit 112°F (44°C)
- Dallas, Texas soared to 108°F (42°C)
Health officials have issued excessive heat warnings for millions of residents, particularly vulnerable groups including the elderly and those with pre-existing conditions.
What is a Heat Dome?
A heat dome occurs when high pressure in the upper atmosphere acts like a lid, trapping hot air beneath it. This phenomenon:
- Prevents cloud formation
- Blocks cooling weather systems
- Intensifies solar heating
Climate scientists suggest such extreme weather events are becoming more frequent and intense due to climate change.
Safety Recommendations
Authorities advise:
- Stay hydrated and avoid alcohol/caffeine
- Limit outdoor activities during peak heat
- Check on vulnerable neighbours
- Never leave children or pets in vehicles
The National Weather Service predicts this heat dome may persist for at least another 7-10 days, with nighttime temperatures offering little relief in urban areas.
