Nassau County flash flood warning until 6:45 p.m.

New York state Gov. Kathy Hochul has issued a state of emergency for Long Island as heavy rain is causing flooding in several areas.

“With a chance of heavy rain tonight and tomorrow across New York City, Long Island, and the Hudson Valley, we’re keeping a close eye on potential flash flooding,”  Hochul said in a news release. “I’m directing state agencies to prepare response assets and be ready to assist our partners at the local level if they need support. I encourage anyone expected to receive heavy rainfall over the next 48 hours to stay vigilant, keep a close eye on the forecast, and heed any emergency orders from officials if necessary.”

The National Weather service has issued a flash flood warning through 6:45 p.m. tonight.

"The storm has grown materially worse," Nassau County Executuve Bruce Blakema said in a statement. "There are dangerous conditions throughout the county especially in low lying areas. I have fully activated the Emergency Management Center. The conditions will worsen signficantly in a few hours. Please be advised that consideration should be given to cancelling all activities that require pedestrain or vehicle movements especially on the South and North shores of Nassau County and low lying areas until Saturday afternoon. As always in the event of an emergency dial 911."

The NWS  forecasted 3-5 inches of rain with localized amounts greater than 5-7 inches. Rainfall rates may reach an inch to two inches per hour. With the ground already saturated from last weekend’s rain event, there is an increased threat of flash flooding across the area.

“Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations,” the NWS NY stated on Weather.gov. “Extensive street flooding is possible. Several rounds of minor coastal flooding likely with continuation of ocean beach erosion.”

The NWS NY’s twitter page noted to never drive through flooded roads and to “Turn Around Don’t Drown.” They also mentioned that 6 inches of fast-moving water can knock over and carry away an adult and 12 inches of fast-moving water can carry away a small car. To stay safe during this extreme rain event, listen to alerts and set up a way to get weather warnings on your phone.

Communities highlighted for flash flooding include Freeport, Valley Stream, Long Beach, Glen Cove, Lynbrook, Woodmere, Rockaway and Oyster Bay.

The Metroolitan Transit Authority is reporting system wide disrupions due to the heavy rainfall and is advising that people remain at home if travel unnecssary.