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This summer, warmth and dryness will build in the West, worsening the historical drought conditions that have plagued California for four straight years. Meanwhile, the Gulf Coast will have an abundance of moisture, raising concerns for flooding at times.
In the nation's midsection, severe weather is forecast to continue into summer, with the overall tornado count increasing from last year. In the Northeast, above-normal temperatures will mark a noticeable difference from the cooler-than-average summer of 2014.
JUMP TO: More 90-Degree Days Than Last Year Forecast for Northeast, Mid-Atlantic| Wet, Buggy Season Ahead for Southeast, Central Gulf Coast, Tennessee Valley | Rainy Weather in Store for Southern Plains, Lower to Mid-Mississippi Valley | Severe Risk to Continue for Midwest, Northern and Central Plains | Severe Drought to Worsen in California, Expand Northward at Full Force
Warmth from central Canada and the northern Plains will flow into the Northeast this summer, leading to above-normal temperatures and drier conditions for much of the region.
"I'm not expecting extreme heat, but periods of warmer-than-normal temperatures will come and go during the course of the summer," AccuWeather.com Expert Long-Range Forecaster Paul Pastelok said.
After a cooler-than-normal summer of 2014, the East overall is forecast to be hit by more 90-plus degree days this summer.
In Philadelphia and New York City, there may be as many as 10 more than last summer.
For much of the summer, the central and southern mid-Atlantic will come alive with showers and thunderstorms.
Washington, D.C., Baltimore and Philadelphia will be in the line of fire.
From the Southeast to the Gulf Coast and Tennessee Valley, the summer of 2015 will bring very wet conditions as result of warm water temperatures in the northern Gulf and a building El Nino. Flash flooding could be a concern at times.
"I would consider stocking up on the bug spray this year down across the Tennessee Valley and the Gulf Coast because it looks very wet," Pastelok said.
Extreme heat should be kept at bay, but high humidity and muggy conditions will plague the region.
As for tropical activity, the northern Gulf states could be affected as early as June.
"Water temperatures are running much warmer than last year," Pastelok said. "It may not take much to spawn a weak tropical system to enhance the rainfall on the Gulf Coast this year."
Rainy weather will also spread across parts of Texas for much of the summer, focusing in on the lower Rio Grande Valley and southwestern portion of the state.
Into the start of June, showers and storms will improve the drought conditions across northern and northwestern Texas, but the region could dry out again as rain falls mainly west of these areas during midsummer.
As the monsoon picks up, storms will drench the Four Corners region, delivering above-normal moisture to the region.
Overall, the southern Plains and lower to mid-Mississippi Valley will see fewer 90- and 100-degree F days than in recent years.
"It's not as dry going into this summer season across the entire southern Plains, and I think that will have an impact on how high and how consistently we'll hit above 90 this year," Pastelok said.
The northern and central Plains and much of the Midwest will face drier and warmer conditions this summer compared to last summer.
"Drier-than-normal conditions in the winter and for the most part this spring will lead to a drier soil and hotter temperatures. This can put stress on crops for this region," Pastelok said.
Southeastern Iowa, Missouri, Illinois, eastern Kansas and Oklahoma may have a shot at dodging this extreme heat with more possibilities for rain.
Spotty areas of thunderstorms, some of which can be severe, may break out in June, increasing the potential for tornadoes.
The middle of the summer will feel hot across the Dakotas, Nebraska, Iowa and Minnesota.
"They will be dry, and the heat will just build as we go into the summer months, especially June and July," Pastelok said.
The drought in California will continue to worsen this summer, after the heart of the winter season brought little snowfall to the Sierra.
Without rain in the forecast, there are indications that the fire season, typically occurring June through October, could be one for the record books.
"The wildfire season has already kicked off a little early," Pastelok said. "I think the frequency will really pick up later in the summer and early fall."
Drought conditions are forecast to expand northward at full force into the Pacific Northwest, especially east of the Cascades.
"It looks to me like they'll continue to get drier and drier, and by June and July, it'll have reflection on temperatures as well," Pastelok said. "It should get hotter across those areas."
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