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After days of\u00a0intense flooding<\/a>\u00a0in Florida, that state and many others are bracing for an intense heat wave, while the Pacific Northwest will experience unseasonably cold weather and there is a potential for late-season snow in the Rocky Mountains early next week.<\/p>\n The chaotic weather map includes the possibility of severe thunderstorms developing in between hot and cold fronts. Forecasters said the colliding fronts could lead to areas of flash flooding between eastern Nebraska and northern Wisconsin on Saturday night, as well as strong storms across parts of eastern Montana into North and South Dakota.<\/p>\n Meanwhile a plume of tropical moisture will reach the central Gulf Coast during the next couple of days, with heavy rain expected to start Monday morning, according to the National Weather Service.<\/p>\n Forecasters said the threat of heavy rains in Florida continues to dissipate, but some thunderstorms could cause local flooding given the already saturated soil. Some areas between Miami and Fort Lauderdale were left underwater in recent days as storms dumped up to 20 inches (50 centimeters) in southern parts of the state.<\/p>\n The damaging\u00a0no-name storm system<\/a>\u00a0coincided with the early June start of hurricane season, which this year is forecast to be\u00a0among the most active<\/a>\u00a0in recent memory amid concerns that climate change is increasing storm intensity.<\/p>\n Across much of the southern parts of the country, temperatures were rising Saturday.<\/p>\n In Atlanta, where highs were forecast to near 100 degrees Fahrenheit (38 degrees Celsius) both weekend days, city officials opened a cooling center to provide relief. The city also postponed a \u201cFamily and Friends Field Day\u201d due to the heat.<\/p>\n And in the west Texas city of El Paso, Saturday highs were expected to approach 105 F (40.6 C), and the National Weather Service issued a heat advisory through Monday morning for the region. The city has opened five cooling centers that will operate daily until further notice.<\/p>\n The National Weather Service said temperatures in Phoenix, where an excessive heat warning was in effect, were forecast to reach 113 F (45 C) on Saturday afternoon. That would be short of the record for June 15 \u2014 115 F (46 C) \u2014 set in 2021.<\/p>\n Though Arizona is entering its three-month monsoon season, when a shift in wind patterns typically pulls moisture in from the tropical coast of Mexico, no rain is forecast for most of the coming week.<\/p>\n \u201cNo chances of rain across the state,\u201d National Weather Service meteorologist Ted Whittock said, while noting that there is a 30% chance of showers in southeastern Arizona next Friday.<\/p>\n In Tennessee, tens of thousands of revelers at the\u00a0Bonnaroo Music & Arts Festival<\/a>\u00a0braved a hot, sunny weekend to take in more than 150 performances at the 700-acre farm campground and concert venue that hosts the annual event. While medical crews treated various heat-related conditions, some fans constructed elaborate canopy and tent combinations for shade. Others had their sunscreen confiscated upon entry because of restrictions on full-size bottles and aerosol cans,\u00a0The Tennessean reported<\/a>.<\/p>\n Temperatures in the Mid-Atlantic and New England will likely peak in the mid- to upper 90s next week, which is \u201cnothing to sneeze at even in the middle of the summer, let alone this early in the summer,\u201d National Weather Service meteorologist William Churchill said. The high humidity will make it feel even hotter in many places, he added.<\/p>\n\n