A storm set to deliver heavy rain and flooding problems Tuesday could bring a change to snow on the back end Wednesday in part of the Northeast.
It would be the last sort of thing to expect following the chaos associated with 1 to 3 inches of rain and flash flooding.
However, this very sort of thing is possible following the rain over the central and northern Appalachians and the eastern Great Lakes.
Enough snow could fall to coat not only windshields and grassy areas, but also roads and sidewalks.
The most likely area for the change to snow to happen stretches from the mountains of West Virginia and western Maryland to western and central Pennsylvania, western and northern New York, Vermont and neighboring Canada.
The timing of the changeover would begin early Wednesday morning in the south to late in the day and evening in the north.
It could also make for an interesting drive home Wednesday across upstate New York, where temperatures will drop off the fastest.
It is possible the snow would focus into a narrow, heavy band only lasting a couple of hours, but perhaps bringing an inch to some locations.
East of the Appalachians, from Richmond to Philadelphia, New York City and Boston, the rain is likely to simply end the traditional way... with a big push of dry air accompanied by gusty winds and clearing.
A change from rain to snow during a storm is a rare event. Sometimes you can go through an entire winter and never have such a phenomenon occur, as dry air usually arrives before the air is cold enough for snow.
Following a dip in temperature during the middle of the week, summerlike warmth will rebound across much of the Northeast by this weekend.
An outbreak of severe weather is targeting Kansas and Oklahoma Wednesday evening.
Daily episodes of severe thunderstorms and flooding downpours will impact the Plains this week, possibly lingering into the weekend.
While a few showers will pass east of the Bay Area, seasonable weather and sunshine will hold in place through the weekend.
The central and southern Plains will continue to be pummeled by strong storms for the next several days, but the most potent severe weather threat is likely to be during the Mother's Day weekend.
Wind, seas and surf will build in advance of what is likely to become the first tropical system of 2015 along the southeastern Atlantic coast of the United States late this week.
Chicago, IL (1876)
Severe local windstorm resulted in $250,000 damage.
Lakehurst, NJ (1937)
Hindenburg disaster after 4-hour delay of landing due to a thunderstorm.
Omaha, NE (1975)
Massive tornado killed 3 people and injured 133 while causing 150 million dollars worth of damage. Tornado cut a swath 10 miles long and one-quarter of a mile wide through the industrial and residential areas of west-central Omaha before lifting over the northern section of the city. Most costly U.S. tornado to date.