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Values of the heat index around the Washington area at 1:10 pm. Tuesday. (National Weather Service)
(This message, originally issued at 1:49 pm, was updated at 2:30 pm to add information about the excessive heat warning applied.)
* Heat Warning excessive up to 20 hours *
The National Weather Service issued an excessive heat warning for the Washington and Baltimore areas until 8 pm. Tuesday, the most severe heat alert.
"The combination of extreme temperatures and high humidity will create a dangerous situation in which heat-related illnesses are expected," said the Meteorological Service.
At 13:10, the air temperature in Washington climbed to 97 degrees while the dew point, an indicator of humidity, was at 75 degrees. This combination produced a smothering heat index, or a measurement of the heat of the air, of 110 degrees. The Weather Service issues a heat warning when the heat index values reach 110 or should rise as high.
The air temperature of 97 and the heat index of 110 early Tuesday afternoon marked the highest levels of summer 2018
The Meteorological Service has advised to register parents and neighbors. Seniors and anyone with no access to air conditioning are the most vulnerable to heat-related illnesses. "Take extra precautions if you work or spend time outdoors," he says. "When this is possible, reschedule strenuous activities early in the morning or evening, know the signs and symptoms of heat exhaustion and heat stroke, wear light and loose clothing if possible and drink. a lot of water. "
Tuesday produced the most extreme heat and moisture of the week despite previous predictions that called Sunday and Monday the hottest days of this heat wave. On Sunday, the high temperature was 93 with maximum heat index values in the low 100s. Monday reached 95 with a heat index as high as 107. Tuesday marked the fifth consecutive day with highs of at least 90 degrees.
The heat in Washington started early in the day Tuesday. The low temperature of the morning has fallen to only 80 degrees, which, if it stands, will mark a record low temperature for the date, passing the previous mark of 79 from 1898 and 2002.
At 10 pm, the temperature in Washington was the highest in the country on the Weather.com map:
It is unlikely, however, that Washington is setting a record high. The record of 101, last set in 1966 (and before that in 1873 and 1872), should not be achieved
Nevertheless, the heat and humidity caused much discontent among the Washingtonians [19659014] "DC" tweeted Naomi Eide
"Every day I think it's going to be the hottest day, so the next day is worse" ] tweeted Nancy Duley .
Wednesday, July 4 should actually show some improvement, as the wind is blowing from the ocean, capping at 90 degrees, although it remains quite wet .Heat index values should always close to 100.
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