The risk of damaging winds, hail, isolated tornadoes and downpours will continue across the Plains.
A repeat of Saturday's warmth is not expected anytime soon in Harrisburg, with the weather taking a cooler and wet turn.
Low pressure developing in the Tasman Sea will lead to strong wind, rain and pounding surf along the eastern Australia coast.
Saturday's warmth will be replaced by more clouds and the arrival of late-day rain on Sunday before the danger for violent storms returns on Monday.
A pattern favoring waves of progressively cooler air will set up across much of the Midwest and Northeast during next week and could continue into early May.
Round after round of drenching rain will continue to cause flooding in the South, while another dose of rain may renew flooding in the Ohio Valley this weekend.
Ahead of the monsoon season in India, temperatures will swell well above normal in parts of India and Pakistan.
The 119th Boston Marathon will take place on Monday, April 20, and runners set to take on the historic course will face cool and rainy conditions.
The southern Plains and western Gulf Coast will once again become the target of severe thunderstorms into Saturday evening.
Temperatures will cool off slightly in Los Angeles this week and spotted showers are likely to accompany these falling temperatures during the second half of the week.
A repeat of Saturday's warmth is not expected anytime soon in Pittsburgh with the weather taking a wet and cooler turn.
South Dakota (1995)
Spring snows continued. 6-12" and locally 2 feet fell between Mobridge and Aberdeen. A stretch of I-90 had to be closed.
Tornadoes in Arkansas, Kansas, Missouri, Iowa, Illinois, Wisconsin, Michigan and Indiana. More than 24 funnels; over 100 killed. Sixty-five dead and $1 million damage in Marshfield, MO.
San Francisco, CA (1906)
Earthquake and fire. Infrequent easterly wind drove flames westward through the city rather than confining them to the downtown harbor area.