Flooding closes roads in Westchester. Chance of more rain in Memorial Day weekend forecast

Memorial Day weekend often signals the unofficial start of the summer season with barbecues and outside events, but this year, possible showers throughout the weekend may dampen plans.

A severe thunderstorm warning has been issued for the Lower Hudson Valley Thursday morning from 10 a.m. to 10:45 a.m. Several downed trees and power lines have been reported in Westchester, Putnam and Rockland counties, as well as some flooding in some roadways.

In White Plains, Roosevelt Street and Maple Avenue have been shut down due to flooding. Central Park Avenue in Hartsdale and Yonkers is also shut down. In Jefferson Valley, flooding has blocked roadways near Wood Street and Sunrise Drive.

The National Weather Service said there could be frequent lightening and wind gusts up to 60 mph during the worst of the storm, and a slight chance of small hail in some areas.

A 50% chance of thunderstorms and heavy rain remains until 2 p.m. Thursday throughout the region. After 2 p.m., the rain is expected to clear but clouds may remain through the evening. The high temperature is expected to be around 81 degrees and may drop to around 61 degrees in the evening.

Friday is looking mostly sunny with a high near 82 degrees. Skies should remain clear in the evening, when temperatures are expected to drop to 58 degrees.

The pool may still be a little chilly for some on Saturday after a 20% chance of showers before 2 p.m. The rest of the day, however, is expected to be mostly sunny with a high of 81 degrees. In the evening, the forecast looks mostly cloudy with a low of 61 degrees, but showers could pop up between 8 p.m. Saturday and 2 a.m. Sunday.

Sunday may be the best day for outdoor plans with a mostly sunny forecast and a high of 82 degrees during the day. The evening is expected to be mostly cloudy with a low of 63 degrees but a 30% chance of rain returns after 2 a.m. Monday.

Unfortunately, some parades may have a chance of getting rained out on Monday as there is a 50% chance of showers during the day. Temperatures are expected to cool down with a cloudy high of 74 degrees. The National Weather Service said showers are likely in the evening and low temperatures are expected to drop to 62 degrees.

A 50% chance of showers remains through Tuesday and Wednesday. Both days are expected to be partly sunny with a highs in the 70s.

This article originally appeared on Rockland/Westchester Journal News: Memorial Day weekend weather forecast for Lower Hudson Valley