A multifaceted storm will bring major disruptions to the northeastern United States spanning Sunday night into Tuesday.
The same storm that is triggering severe thunderstorms and tornadoes across the South this weekend will sweep up the East Coast into Tuesday.
Rain to ease dryness, trigger localized flooding
An area of locally drenching rain will advance northward with the storm beginning on Sunday night.
One to 2 inches of rain can fall along the swath from Pittsburgh to Washington, D.C., New York City and Boston by Tuesday night.
The threat for flooding will be rather localized, mainly staying confined to streets and poor drainage areas.
The rain, combined with areas of low clouds and fog, could lead to delays on the road and in the air to start the workweek.
While the rain can lead to disruptions to daily activities, it will help to fill up low streams, lakes and reservoirs. According to the latest U.S. Drought Monitor, much of the Northeast is suffering from moderate to extreme drought.
Snow, ice to threaten interior Northeast and New England
Wet snow and ice will compose a majority of the event for much of New York state and New England, and threaten to cause slippery travel.
As cold air is pulled southward by the storm, areas that start as rain can changeover to snow and ice.
"There will be areas from far northern Pennsylvania to upstate New York and southeastern Canada where the precipitation mode is primarily snow," AccuWeather Meteorologist Michael Doll said. "It’s these areas where several inches of wet snow is most likely to accumulate."
Localized snow amounts could exceed 6 inches in these areas. Where ice mixes with snow, accumulations will be cut down significantly.
Interstates 80, 81, 87, 90, 91 and 93 could be slower than normal due to slippery spots and reduced speeds.
Howling winds to cause dangerous surf
High wind gusts past 50 mph will buffet coastal areas from the Delmarva to eastern Maine. The high winds will push a large amount of water toward the coast.
"The wind along with the drenching rain and soft soil could knock down trees and power lines, resulting in power outages," AccuWeather Meteorologist Brett Rathbun said. "The coastal flood threat will be greatest at times of high tide."
The crashing waves threaten to eat away at the beaches and cause erosion up and down the mid-Atlantic and New England coasts. The seas will be dangerous for small craft.
Brief surge of warmth to arrive at midweek
In the wake of the storm, the door will be opened for mild air to make a brief return in the Northeast.
High temperatures will range from the 50s to lower 60s F across the mid-Atlantic to upper 40s across southern New England. Temperatures at this level are more typical of late March.
A new wave of cold air will abruptly end the mild spell late this week.