Many states across the United States are facing scorching heat right now. This year, the US has recorded a historic heat wave, with temperatures going up to 10 to 30 degrees above normal.

Many states across the United States are facing scorching heat right now. This year, the US has recorded a historic heat wave, with temperatures going up to 10 to 30 degrees above normal. The National Weather Service has advised people to stay indoors as much as possible, take care of their health and stay hydrated. More than 100 million people are expected to be affected by the heatwave. The warnings were also issued for Illinois and Indiana along with parts of southern Michigan and north-western Ohio from Tuesday through Wednesday night according to the National Weather Service. Many parts of the Midwest and South were mainly affected. Many areas suffer power outages in United States Due to the extreme weather conditions and severe storms in the many areas of the Midwest, more than 620,000 people had to go without power early Tuesday, according to Power Outage US, with more than 370,000 outages in Ohio alone. Also read | Extreme heat wave in US: 100 million Americans asked to stay indoors Many people tweeted and mentioned the problems they are facing due to the power outage. Ballina Shire Council mayor, Sharon Cadwallader said that "the resulting power outages have left residents in a communication black-hole". While some said that they are unable to do the daily chores. Concerns for animals rise Heatwaves not only affect humans but also animals. Due to the temperatures increasing rapidly, it’s difficult for the animals to grasp all the changes. Drought-like conditions are increased temperatures that have resulted in wildfires, which result in the death of many wildlife animals. Heat can dry up rivers and plants, which are a source of food and water for animals. According to the Washington Department of Fish and Wildlife, an estimated 80 per cent of the shrub-steppe has been lost. While researchers estimate that more than a billion marine animals along the coast were killed by extreme temperatures in Pacific Northwest. Rabbits, cattle and stationary organisms are at a higher risk. Watch | Severe storms wreak havoc in South US, government buildings and houses destroyed Florida, Ohio, Chicago, Kansas, Texas, Georgia are majorly affected According to statesatrisk.org, Florida currently has an average of 25 dangerous heatwaves each year. The temperature may go the to upper 90s and the heat indices near 110 degrees this week. A heat advisory is already in effect for the state of Florida. In Ohio, Kansas and Chicago as well an excessive heat warning is in effect. The temperature is expected to rise between 100 to 110 degrees, according to the National Weather Service. Chicago is also one of the worst affected states. Texas has broken the power demand record during the heat wave. Georgia officials have also raised health concerns over heat waves. According to a report it currently averages about 20 dangerous heat days a year. When will the heatwave end? As of now, no information is given by the respected departments and officials about the end of the heatwave. However, last year's temperature dipped gradually for some weeks. Causes of the heatwave Many experts have already said about the linkage of the heatwave with climate change. Due to increased global warming, and pollution, the earth is getting warmer day by day. They have also pointed out the importance to take necessary steps to protect our environment, in order to prevent future problems. We can easily see with the adverse climate conditions in the US as well as other parts of the world, including Spain, India, etc. that there is an urgent need to take necessary steps for environmental protection. Along with the heatwaves, the US is also suffering from other climate-related catastrophes. Everyone hopes that the conditions get better soon. WATCH WION LIVE HERE You can now write for wionews.com and be a part of the community. Share your stories and opinions with us here.

Historic heatwave scorches US: When is it expected to end?

The National Weather Service issued another excessive-heat warning on Tuesday for much of Washington state and Oregon that will remain in effect until Sunday. There are also heat advisories in the Northeast, from Philadelphia to Boston. Here is what you need to know about these heat waves:

What causes a heat wave?

In most parts of the country, temperatures must be above the historical average in an area for two or more days before the label “heat wave” is applied to a hot spell, according to the National Weather Service. But the definition can vary by region; in the Northeast, it is defined as three straight days in the 90s or above.

Heat waves begin when high pressure in the atmosphere moves in and pushes warm air toward the ground. That air warms up further as it is compressed, and we begin to feel a lot hotter.

The high-pressure system pressing down on the ground expands vertically, forcing other weather systems to change course. It even minimizes wind and cloud cover, making the air more stifling. This is also why a heat wave parks itself over an area for several days or longer.

What is a heat dome?

As the ground warms, it loses moisture, which makes it easier to heat even more. And in the drought-ridden West, there is plenty of heat for the high-pressure system to trap.

As that trapped heat continues to warm, the system acts like a lid on a pot — earning the name “heat dome.” In the Pacific Northwest, the heat and the drought are working in concert, exacerbating the problem and causing temperature records to fall day after day.

Which places in North America are currently experiencing a heat wave?

One of the hottest cities on the continent on Monday was Salem, Oregon, about 45 miles southwest of Portland, where the high temperature reached 117 degrees Fahrenheit in the afternoon, a record for the city, the National Weather Service said.

At Portland International Airport, the high temperature was 112 degrees on Sunday and 115 degrees on Monday. The high on Monday was the hottest temperature recorded there since record-keeping began in 1940.

Canada broke a national heat record on Sunday when the temperature in a small town in British Columbia reached almost 116 degrees, breaking an 84-year-old record by nearly 3 degrees.

The Northeast, under a separate weather system from the Northwest, is also in the middle of a three-day heat wave that is expected to end on Thursday. Boston reached 97 degrees on Monday, tying its record for that date, the National Weather Service said.

Why is it hotter than normal in North America?

We have long known that the world has warmed by more than 1 degree Celsius (about 1.8 degrees Fahrenheit) since 1900, and that the pace of warming has accelerated in recent decades. The warmer baseline contributes to extreme-weather events and helps make periods of extreme heat more frequent, longer and more intense.

When will the heat wave end?

Forecasters say that temperatures will remain unseasonably hot into next week in the Pacific Northwest.

In Portland, temperatures have moderated somewhat but are expected to reach the mid-80s later in the week, said Clinton Rockey, a meteorologist with the National Weather Service in Portland. Temperatures will remain 10 to 20 degrees above average at least until next Tuesday.

How can I safeguard against possible power outages?

In Seattle, where until this month official weather stations in the past century had recorded only three days that exceeded 100 degrees, many more residents have recently bought air-conditioning units. While there have been no major power outages in the Pacific Northwest, the electrical grid could become overloaded with increased energy demands to cool and dehumidify buildings.

To help reduce demand, consider raising the thermostat by a few degrees and closing window shades and blinds. Avoid using large appliances like ovens, washing machines and dryers during the hottest part of the day, and turn off all lights and electronic devices not in use. With water heating accounting for about 18% of the energy consumed in your home, consider shorter or colder showers, the Energy Department suggests.

The National Weather Service issued another excessive-heat warning on Tuesday for much of Washington state and Oregon that will remain in effect until Sunday. There are also heat advisories in the Northeast, from Philadelphia to Boston.

The National Weather Service issued another excessive-heat warning on Tuesday for much of Washington state and Oregon that will remain in effect until Sunday. There are also heat advisories in the Northeast, from Philadelphia to Boston. Here is what you need to know about these heat waves: What causes a heat wave? In most parts of the country, temperatures must be above the historical average in an area for two or more days before the label “heat wave” is applied to a hot spell, according to the National Weather Service. But the definition can vary by region; in the Northeast, it is defined as three straight days in the 90s or above. Heat waves begin when high pressure in the atmosphere moves in and pushes warm air toward the ground. That air warms up further as it is compressed, and we begin to feel a lot hotter. The high-pressure system pressing down on the ground expands vertically, forcing other weather systems to change course. It even minimizes wind and cloud cover, making the air more stifling. This is also why a heat wave parks itself over an area for several days or longer. What is a heat dome? As the ground warms, it loses moisture, which makes it easier to heat even more. And in the drought-ridden West, there is plenty of heat for the high-pressure system to trap. As that trapped heat continues to warm, the system acts like a lid on a pot — earning the name “heat dome.” In the Pacific Northwest, the heat and the drought are working in concert, exacerbating the problem and causing temperature records to fall day after day. Which places in North America are currently experiencing a heat wave? One of the hottest cities on the continent on Monday was Salem, Oregon, about 45 miles southwest of Portland, where the high temperature reached 117 degrees Fahrenheit in the afternoon, a record for the city, the National Weather Service said. At Portland International Airport, the high temperature was 112 degrees on Sunday and 115 degrees on Monday. The high on Monday was the hottest temperature recorded there since record-keeping began in 1940. Canada broke a national heat record on Sunday when the temperature in a small town in British Columbia reached almost 116 degrees, breaking an 84-year-old record by nearly 3 degrees. The Northeast, under a separate weather system from the Northwest, is also in the middle of a three-day heat wave that is expected to end on Thursday. Boston reached 97 degrees on Monday, tying its record for that date, the National Weather Service said. Why is it hotter than normal in North America? We have long known that the world has warmed by more than 1 degree Celsius (about 1.8 degrees Fahrenheit) since 1900, and that the pace of warming has accelerated in recent decades. The warmer baseline contributes to extreme-weather events and helps make periods of extreme heat more frequent, longer and more intense. When will the heat wave end? Forecasters say that temperatures will remain unseasonably hot into next week in the Pacific Northwest. In Portland, temperatures have moderated somewhat but are expected to reach the mid-80s later in the week, said Clinton Rockey, a meteorologist with the National Weather Service in Portland. Temperatures will remain 10 to 20 degrees above average at least until next Tuesday. How can I safeguard against possible power outages? In Seattle, where until this month official weather stations in the past century had recorded only three days that exceeded 100 degrees, many more residents have recently bought air-conditioning units. While there have been no major power outages in the Pacific Northwest, the electrical grid could become overloaded with increased energy demands to cool and dehumidify buildings. To help reduce demand, consider raising the thermostat by a few degrees and closing window shades and blinds. Avoid using large appliances like ovens, washing machines and dryers during the hottest part of the day, and turn off all lights and electronic devices not in use. With water heating accounting for about 18% of the energy consumed in your home, consider shorter or colder showers, the Energy Department suggests.

What to know about the heat wave

Dangerously hot conditions and triple-digit temperatures are forecast for the Western United States this week, leading to a wave of excessive heat warnings and heat advisories from Northern California and Nevada up to Washington.

Temperatures are forecast to reach as high as 107 degrees Tuesday and Wednesday in the San Joaquin Valley in Northern California, according to the National Weather Service, and temperatures that may be 16 to 18 degrees above normal for this time of year may break daily records in the Fresno area.

In Redding, California, temperatures reached 109 on Monday, breaking the record of 103 set in 2016, meteorologists said. An excessive heat warning will remain over portions of the Valley and foothills through Tuesday with highs between the upper 90s and 107.

In Nevada, Las Vegas saw its first 100-degree day of the year on Monday. Areas around the city and just across the California state line in Death Valley will be under an excessive heat warning from Wednesday morning through Friday night, the weather service said. Temperatures may climb up to 118 in Death Valley.

A heat advisory is also in effect through Thursday night for the central and southeastern portion of Washington, including the towns of Clarkston, Pomeroy and Bridgeport, the weather service said. High temperatures could reach the lower 100s. Similar sweltering conditions are forecast for portions of Western Oregon.

Hot weather is also forecast for Montana over Wednesday and Thursday with high temperatures climbing into the upper 80s and upper 90s. High temperatures could reach 15 to 25 degrees above normal, meteorologists said.

Warmer-than-average temperatures have been the trend in recent memory. Last year tied 2016 as the hottest year on record, according to European climate researchers. To complicate matters, a severe drought is ravaging the entire western half of the United States.

Meteorologists have advised residents to stay hydrated, wear light clothing when outside, limit outdoor exposure and be mindful of any signs of heat related-illnesses such as heat stroke and heat exhaustion. Older adults and children are the most vulnerable, the weather service said.

A recent study published in the journal Nature Climate Change suggested that more than a third of heat-related deaths in many parts of the world can be attributed to the extra warming associated with climate change.

Dangerously hot conditions and triple-digit temperatures are forecast for the Western United States this week, leading to a wave of excessive heat warnings and heat advisories from Northern California and Nevada up to Washington.

Dangerously hot conditions and triple-digit temperatures are forecast for the Western United States this week, leading to a wave of excessive heat warnings and heat advisories from Northern California and Nevada up to Washington. Temperatures are forecast to reach as high as 107 degrees Tuesday and Wednesday in the San Joaquin Valley in Northern California, according to the National Weather Service, and temperatures that may be 16 to 18 degrees above normal for this time of year may break daily records in the Fresno area. In Redding, California, temperatures reached 109 on Monday, breaking the record of 103 set in 2016, meteorologists said. An excessive heat warning will remain over portions of the Valley and foothills through Tuesday with highs between the upper 90s and 107. In Nevada, Las Vegas saw its first 100-degree day of the year on Monday. Areas around the city and just across the California state line in Death Valley will be under an excessive heat warning from Wednesday morning through Friday night, the weather service said. Temperatures may climb up to 118 in Death Valley. A heat advisory is also in effect through Thursday night for the central and southeastern portion of Washington, including the towns of Clarkston, Pomeroy and Bridgeport, the weather service said. High temperatures could reach the lower 100s. Similar sweltering conditions are forecast for portions of Western Oregon. Hot weather is also forecast for Montana over Wednesday and Thursday with high temperatures climbing into the upper 80s and upper 90s. High temperatures could reach 15 to 25 degrees above normal, meteorologists said. Warmer-than-average temperatures have been the trend in recent memory. Last year tied 2016 as the hottest year on record, according to European climate researchers. To complicate matters, a severe drought is ravaging the entire western half of the United States. Meteorologists have advised residents to stay hydrated, wear light clothing when outside, limit outdoor exposure and be mindful of any signs of heat related-illnesses such as heat stroke and heat exhaustion. Older adults and children are the most vulnerable, the weather service said. A recent study published in the journal Nature Climate Change suggested that more than a third of heat-related deaths in many parts of the world can be attributed to the extra warming associated with climate change.

Western states face excessive heat warnings and advisories

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Historic heatwave scorches US: When is it expected to end?

What to know about the heat wave

Western states face excessive heat warnings and advisories