heat, humidity sticks to nearly all of US (Update)
image provided by the National Weather Service shows temperatures in
the continental United States as of 3 p.m. on Friday, July 22, 2016.
The National Weather Service forecasts that on Monday nearly all of
the Lower 48 states could hit 95 on the heat index somewhere, which
factors in humidity. The weather service outlook for the next three
months shows above normal temperatures across the country. (National
Weather Service via AP)
it the United Sweats of America. A heat wave spreading across the
country is leaving few places to hide. Not even the cool of night.
Friday afternoon, all but one of the Lower 48 states had hit 90
degrees Fahrenheit (32 degrees Celsius) somewhere, with only
Washington state around for cooler comfort. For much of the country,
it was expected to get even worse over the weekend.
just day after day. Merciless," said Jeff Masters, meteorology
director of the private Weather Underground. "We don't often see
this much of the country this hot for this length of time."
while the extra hot weather will ease a bit next week for good chunks
of the country, the temperature forecast for the next three months
isn't exactly promising, according to the National Oceanic and
the first time in more than 20 years, the Climate Prediction Center
map is shades of one color: orange for above normal temperatures.
map usually varies, showing places where there is a greater chance
for above or below normal temperatures or equal chances. But the
outlook for August, September and October is for above normal
climate scientist Dan Collins said the center's archives go back to
1995 and they've never seen this for the entire United
States—including Alaska and Hawaii. That doesn't mean a three-month
heat wave, just on average warmer than normal temperatures through
indeed," Collins said. "But maybe less so as the years
haven't calculated if man-made global warming from the burning of
fossil fuels is a factor in the current heat wave, but said it has
been a factor in most recent ones and a good chance here, too.
happening now is a ridge of high pressure has just spread over almost
the entire United States. That keeps clouds and cooling away, and
just pushes warm air down.
to that the humidity, which makes everything feel stickier. It's
coming with warmer ocean water, especially from a hotter-than-normal
Gulf of Mexico, Masters said.
high heat and humidity will move from the Corn Belt toward the
Southeast over the weekend, according to the National Weather
Monday, the weather service forecasts that nearly all of the Lower 48
states could hit 95 on the heat index , which factors in humidity.
And about 30 states are forecast to hit 100.
high temperature averaged for the Lower 48 states was 92 degrees F
(33.5 degrees C) on both Thursday and Friday, the warmest since June
of 2012, said meteorologist Ryan Maue of the private WeatherBell
even the cool of night is helping because temperatures aren't
dropping as much as they normally do. That's a health issue because
the human body relies on the evening coolness for relief, said Greg
Carbin, a forecast chief for the weather service's Weather Prediction
waves like this one "are kinda like the home run statistic in
steroid-fueled baseball," University of Georgia meteorology
professor Marshall Shepherd said in an email. "Sure heat waves
always happened naturally (like home runs in baseball) but the
statistics are shifting to make them more likely and more frequent
within a warmer background climate."