With the weekend in the rear-view mirror, all eyes in the weather world are focused on a large storm in the middle of the country that will make most of the upcoming week gloomy and wet. Temperatures overall will be below normal, and precipitation numbers will easily knock down rainfall deficits in the Long Island area.
This weekend, most temperatures stayed in the 50s. Rain and clouds dominated the skies. With perfect timing, the work week begins and the weather gets better briefly. Monday's forecast calls for mostly sunny skies with high clouds around and highs from the upper 50s to low 60s. Then big changes occur.
A large storm system spinning in the heartland is spreading storminess eastward over the next few days. Sunday night features a forecast chock full of severe weather threats with a potential tornado outbreak. The storm heads east and showers break out over Long Island by Tuesday.
The spinning low pressure center then gets caught up, and doesn't move much for a few days. At first it spreads heavy precipitation and storms to the east, and this affects the area on Tuesday. A chilly wind off the water keeps highs in the 50s. A warm front stays to our south, and finally inches northward through Wednesday. Rain continues on Wednesday, and that may make it the wettest day of the week. The rain is expected to move through along with the warm front, and this shifts the wind.
According to long-range models, all fronts seem to clear out by Thursday. With the upper levels of the atmosphere ripe with instability thanks to the stalled low, thunderstorms are possible late in the day.
Into next weekend, there are hints that the storm sticks around and spreads isolated thunderstorms mainly inland. While temperatures warm up into the 60s Thursday and Friday, they cool off for next weekend.