Update: High wind, coastal flood warnings now in effect from noon Sunday through 8 p.m. Monday

Updated: Oct. 12, 5 a.m.- High wind and coastal flood warnings are now in effect for Sunday afternoon through Monday evening.

Northeast winds of 25 to 35 mph with gusts up to 60 mph are forecasted for eastern Suffolk County as a coastal low moves up the coast and toward the Long Island region, the National Weather Service said.

The high wind warning is in effect from noon Sunday till 6 p.m. Monday.

The strongest winds and gusts are now expected here Sunday night, according to the weather service forecast Sunday morning.

Damaging winds will blow down trees and power lines, the weather service said. Power outages are expected, according to the warning statement. Travel will be difficult, especially for high profile vehicles.

“Avoid windows during the windstorm. Watch for falling debris and tree limbs. Use caution if you must drive,” the weather service said.

“The winds can be damaging, causing wires to come down, tree limbs to break, and outages,” PSEG Long Island said in a statement.

The utility said it has been monitoring the storm and is prepared to respond to it. It has personnel ready to respond safely and as quickly as possible throughout the storm, PSEG Long Island said.

Report an outage and receive status updates by texting OUT to PSEGLI (773454). You can also report your outage through the PSEG-LI app or online at psegliny.com/outages or by calling 800-490-0075.

Coastal flood warning details

A coastal flood warning is in effect from noon Sunday through 8 p.m. Monday for moderate coastal flooding, with 1 ½ to 2 ½ feet of inundation above ground level possible in vulnerable areas near the waterfront and shoreline for the high tide cycles on Sunday afternoon, Sunday night and Monday afternoon, according to the warning statement.

Forecasted high tide times for the Peconic River in downtown Riverhead are 5 p.m. Sunday, 6 a.m. Monday and 5 p.m. Monday. according to the weather service.

The coastal flooding can result in several road closures and flooding of numerous low-lying properties including parking lots, parks, lawns and homes/businesses with basements near the waterfront, the weather service said. Vehicles parked in vulnerable areas near the waterfront will likely become flooded. Flooding will also extend inland from the waterfront along tidal rivers and bays.

Breaking waves of 4 to 8 feet along the north- and east-facing shorelines
of Peconic and Gardiners Bays will result in significant beach erosion and splash-over of seawalls and bulkheads, exacerbating flooding of shoreline roads and properties, according to the forecast. Minor damage is possible to waterfront structures, the weather service said.

Along the eastern Suffolk oceanfront, large breaking waves of 8 to 12 feet on an east to west sweep will result in significant beach erosion and flooding, the weather service said. Widespread dune erosion is likely with localized over-washes possible, resulting in damage to dune structures and localized flooding
of roadways and vulnerable structures behind protective dunes.

Rain is expected in the local area from Sunday morning through Monday night. Thunderstorms are possible after 2 a.m. Monday and during the day Monday. Total rainfall during this period is expected to be between 1 ¾ to 2 ½ inches, according to the weather service forecast.