The heat wave that has gripped much of the nation continues this weekend, but there are signs that it may come to an end soon. NBC's Michelle Franzen reports.
By Miguel Llanos, msnbc.com
The heat wave smothering the Midwest wasn't the only thing spreading towards the East Coast on Saturday -- so too was smoke from the wildfires out west, and with it pollutants that will make the next few days even tougher for people with breathing issues.
In fact, prevailing winds over the last week have been sending that smoke east, with officials issuing local health advisories. ?
Maryland issued a "code orange" air quality alert on Friday and again on Saturday, meaning that the young and elderly are at risk, NBC affiliate WBAL-TV reported.
The wildfire smoke is on top of other air pollution coming into Maryland from other states.
"Maryland is not alone in these extreme conditions," Jay Apperson, a Maryland Department of the Environment spokesman, told WBAL-TV. "Chicago and other areas of the Midwest are issuing these type of advisories and that pollution is coming into Maryland, and we're also being affected by the wildfires."?
Celebrating the warm summer months, as schools let out and the cooling off begins
On Friday,?smoke was detected "from the Rockies to to the Eastern Great Lakes, the mid Atlantic, and the Southeast," according to the U.S. Air Quality "Smog Blog" compiled by the University of Maryland. "The smoke is primarily light density but a moderate density area can be seen in and around the Ohio River Valley.
The highest values on Friday, it added, were "mainly over the Midwest and down towards the Southeast."
The heat wave shifting east comes after last weekend's storms that left millions without power. Hundreds of thousands still don't have electricity back.
Related: Chicago heat doesn't keep these seniors from aerobics
Moreover, since the first round of extreme heat two weeks ago, at least 46 deaths have been tied to the high temperatures, according to a list compiled by the Weather Channel.
On Saturday, Washington, D.C., could break it's all-time record of 106 degrees, the Weather Channel reported. So could Pittsburgh (103) and Louisville, Ky., (107), it added.
Chicago, meanwhile, stands a chance of a fourth straight day of temperatures at 100 or above -- something it's never before seen.
A cold front should bring some relief as the weekend ends, but it's also bringing in the potential for more storms.
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