Extreme heat warning issued for New Castle County for coming heat wave
The first heat wave of the summer is going to grip Delaware, with temperatures and heat indexes in the triple digits.
The National Weather Service has issued an extreme heat warning for New Castle County from 8 a.m. June 22 to 8 p.m. June 25. That warning is issued when extremely dangerous heat is expected or occurring, according to the weather service's glossary.
Wilmington's high temperatures could top out in the triple digits on June 23 and 24, weather service forecasts show. The heat index, a measurement of air temperature and humidity, could reach 108 degrees on June 23 and 104 degrees the following day in the city.
COOL OFF: When do New Castle County's public pools open this summer?
Newark and other cities in New Castle County have similar forecasts, but might not reach the triple digits in air temperature.
Another factor leading to such a dire warning is the low temperatures at night. Temperatures will fall only to the upper 70s, which will not bring much relief, especially to vulnerable populations.
National Weather Service meteorologist Patrick O'Hara said there is uncertainty around when the heat will break, as models are mixed about whether a cold front could swing through in the middle of the week.
Kent and Sussex counties are also getting the major heat, but have only heat advisories for now. The maximum heat index during the heat wave is expected to be 106 in Dover and 107 in Georgetown on June 23.
HEAT WAVE INCOMING IN U.S.: How high will temps go and when will it end?
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June 22 is also a Code Orange Day in Delaware, the Delaware Department of Natural Resources and Environmental Control warned, because of higher-than-normal levels of ozone in the atmosphere. It will make the air quality unhealthy for sensitive groups.
The best advice is to stay hydrated and in air-conditioned rooms. Check up on older people and other vulnerable populations. If you must go outside, have water with you and wear protective, light clothes and a hat to stay as cool as possible.
Shane Brennan covers Wilmington and other Delaware issues. Reach out with ideas, tips or feedback at slbrennan@delawareonline.com.
This article originally appeared on Delaware News Journal: What is an extreme heat warning in Delaware?
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