While starting on a sizzling note in Pittsburgh, the week will end with cooler air making a comeback.
Another warm and humid day will unfold on Tuesday with temperatures rising into the middle and upper 80s, falling just short of the day's record high of 90 F from 1991. Thunderstorms may develop in the afternoon and evening.
More numerous showers and thunderstorms will be around on Wednesday ahead of an approaching cold front. The combination of the storminess and clouds will hold temperatures to the upper 70s. Humidity, however, will remain high.
The week will end on a cooler note with highs in the 60s returning. The cool spell may start with soaking rain on Thursday.
A slow-moving storm system will prevent a return of the summerlike warmth through at least next weekend.
Severe thunderstorms spawned tornadoes in major metropolitan areas, while wildfires raged in the West and flooding downpours persisted in the East.
As much of the West continues to be plagued by intense drought, the production of favorite and trendy foods may be more challenging for states operating in dry conditions.
Since the movie "Jaws," inspired by 1916 shark attacks, the number of shark attacks has been on the rise due to human and seal population increases, shark migration and warming temperatures.
A warmer weather pattern is forecast for much of the Central and Eastern states, while temperatures should throttle back in the Northwest during the middle of August.
Japan and South Korea face tropical floods into this weekend; the danger of a typhoon looms for next week.
Bertha is forecast to take a curved path near the islands in the northeastern Caribbean this weekend, then to stay off the East Coast of the United States next week.
College Station,TX (1998)
106 degrees - a record 27th consecutive day of reaching at least 100 degrees. (The streak ended after 30 days).
Westchester Co.,NY (1812)
Tornado in Westchester Co., NY through parts of White Plains, Harrison, Rye and Greenwich. The same tornado today would have affected Interstates 287, 87, 95 and other major thoroughfares.
Trinity County, CA (1917)
Dry conditions led to tinderbox conditions. 80 forest fires started. Lightning struck 150 times in area of about five square miles.