A record-threatening heat wave has arrived

• This is the country's first heat wave of the season, which carries heightened health risks, since people are not yet accustomed to the high temperatures.

Threat level: Columbus only recorded seven days with temperatures of 90 degrees or higher all last summer.

• This week, it's supposed to be that hot every day. An excessive heat watch is in effect from noon Monday until 8pm Friday.

Zoom in: Each day's forecast will flirt with setting a daily high temperature record.

• Today's projected high for Columbus is 95, just under the record set on June 17, 1994. Add humidity and it could feel as hot as 101.

Flashback: This time two years ago, a high-wind storm followed by a heat wave with similar temperatures strained local power grids, knocking out electricity for thousands of Central Ohioans for several days.

• There aren't any major storms in the immediate forecast, but unfortunately, that also means things likely won't cool down soon.

The big picture: A large area of high pressure, also known as a heat dome, has been building over much of the central and eastern half of the country.

• The Climate Prediction Center thinks the heat threat is likely to continue throughout June.

What's next: The latest summer projections suggest the continental U.S. could challenge the record for its hottest summer to date, with a 40-50% likelihood that Ohio will experience abnormally hot temperatures.

Pro tips: If you must go outside, stay hydrated and wear loose clothing and sunscreen.

• Learn the signs of heat-related illnesses and seek help right away if you or someone you know is experiencing them.
• Check on neighbors and loved ones, especially older adults and those with chronic health conditions, who are more vulnerable in hot weather.

Lastly, turn up your air conditioning a few degrees so it doesn't overwork — saving you money on your electricity bill, and potentially saving us all the inconvenience of another blackout.