A dangerous heatwave caused by the “heat dome” in the western United States peaked on Sunday (July 12th), with approximately 58 million people under a high-temperature weather warning.
According to a report by CBS News on Sunday, meteorologists issued warnings, stating that the abnormally prolonged “heat dome” in the central-western United States has brought great danger. Such conditions in mid-July are considered “extremely rare” in this region.
The “heat dome” is an atmospheric phenomenon that traps hot air over specific areas, leading to sustained high temperatures. The most severely affected areas currently include the Northern Plains, Rockies, and parts of the southwestern deserts.
The National Weather Service (NWS) in the United States has stated that the impact of dangerous high temperatures in these areas will persist until next weekend. At times, the heatwave may even expand eastward.
Meteorologists explain that this “heat dome” formed after a strong heatwave began last week and is the first widespread and intense heatwave of the summer.
Forecasters warn that temperatures are expected to break historical records for this time of year in various locations. People are advised to prepare for temperatures ranging from 105°F (41°C) to 115°F (46°C).
Moreover, the heatwave increases the risk of wildfires and the incidence of heat-related illnesses such as heatstroke is expected to rise significantly.
Most parts of Montana have issued extreme heat warnings. The National Weather Service office in Billings, Montana reported that on Sunday (July 12th), temperatures hit historic highs, reaching above 100°F (38°C) and peaking at 112°F (44°C).
The institution warns that extreme heat may stress the healthcare system, industries, and infrastructure, and could endanger individuals who do not have access to adequate cooling and drinking water.
High temperatures have also spread to North Dakota and South Dakota, with most areas in both states under extreme heat warnings.
Meteorologists in Bismarck, North Dakota stated that local weather will be “dangerously hot”, with a heat index expected to rise to 100-110°F by Monday (July 13th) and nighttime temperatures remaining in the 70s°F, providing little relief from the heat. Similar conditions are expected in most areas of South Dakota.
The National Weather Service advises people to avoid exposure to sunlight, be mindful of the health of family and neighbors, take measures to stay cool, and reduce the risk of heat-related illnesses.