Heavy rainfall made its way across the United States earlier in the week, bringing flash flooding to major metropolitan areas from the Midwest to New England.
"A potent low pressure system tracked across the Ohio Valley and Great Lakes before re-developing off the southern shore of Long Island Wednesday morning," AccuWeather.com Meteorologist Brian Edwards said. "This storm system slowed as it tracked into the eastern part of the country, producing several batches of very heavy rains."
Flash flooding was widespread, affecting many cities from Detroit to Boston.
"Significant rainfall was recorded across this region, with the maximum amount occurring in Islip, New York, where over 13.5 inches of rain fell," Edwards said.
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A cooldown with clouds, showers and thunderstorms is in store for Southern California and much of the Southwest following recent heat and sunshine.
A dominant storm track featuring storms moving west to east across Europe will result in a stark contrast between cold air building across Scandinavia and milder air masses entrenched near the Mediterranean.
After waves of cool air progress through the Midwest and Northeast this week, some areas will be cold enough for the first snow showers of the season by this weekend.
An effort is underway to fill a radar hole in Charlotte, North Carolina, and similarly populated areas in the United States to better detect and protect the public from severe weather.
Unmanned aerial vehicles (UAVs) interfered with containment efforts in the West on at least 25 occasions in 2015.
Newly formed Tropical Storm Koppu is on track to threaten the Philippines this weekend. Those in Taiwan and Japan should also monitor the storm for potential impacts next week.
Denver, CO (1982)
Wet snow - 6 inches foothills; slush in city. Power lines down, as well as trees.
Early-season snows: Jay Peak 6 inches Warren 5 inches
New England (1990)
Remains of Tropical Storms Klaus and Marco brought torrential rains and flooding. Parts of Connecticut had 6 inches of rain or more. Stafford, CT, had 4.20 inches.