Only a few weeks after the polar vortex surged through portions of the United States, yet another wintry weather phenomena is mounting concerns across the nation: bombogenesis.
As a snowstorm bears down on regions from the mid-Atlantic up through New England, the term bombogenesis has come to the forefront, but what is bombogenesis?
"It's a rapidly intensifying storm that is usually over the water," AccuWeather Senior Meteorologist Brett Anderson said.
In order for the storm to develop, a warm and a cold air mass must clash, causing the storm to strengthen in a very short amount of time.
While this scenario is not necessarily uncommon during the winter months, in order to be classified as a bombogenesis the central pressure of the storm must drop 24 millibars in just 24 hours, according to Anderson.
The impacts of a bombogenesis can include rapidly strengthening winds and high precipitation rates, as well as thundersnow.
The late-season swelter will continue along much of the Atlantic Seaboard through the week as tens of millions head back to school and work.
The next Atlantic tropical depression or storm may take shape in the southwestern Gulf of Mexico's Bay of Campeche during the next couple of days.
A second volcanic eruption occurred on Sunday morning in Iceland in the same area that had one on Friday.
Severe thunderstorms will threaten holiday festivities across parts of the Midwest to close out the extended Labor Day weekend.
While flooding is a threat, monsoonal rains will be beneficial for most areas across northwest India this week.
Gusty winds, large hail and power outages occurred Sunday into Monday morning in the north-central United States.
Los Angeles, CA (1955)
110 degrees, hottest day ever in September. This mark was tied September 4, 1988.
Milwaukee, WI (1988)
Hottest summer on record. Six days of 100 degrees or greater and 36 days of 90 or above. Average temperature of 73.8 beat the old record of 72.8 set in 1921 and 1955. The normal average tempera- ture for a summer in Milwaukee is 68.3 degrees.
Washington Co., IA (1897)
Hail fell and drifted in piles 6 feet deep in Washington County.