More than 215,000 residential and commercial properties in the Boston area could potentially be impacted by storm surge flooding from Hurricane Irene, depending where the storm makes landfall.

Among the 12 coastal major metro areas nationwide included in the National Oceanic and Atmospheric Association (NOAA) cone of concern and analyzed by housing data provider CoreLogic, an estimated 1.87 million properties are at potential risk of storm surge flooding.

CoreLogic estimated that 215,219 properties in the Boston area are at risk of storm surge-driven inundation. Of the total properties at risk in the Boston area, roughly 40 percent are not in a designated Federal Emergency Management Agency (FEMA) flood zone.

Long Island, N.Y., faces the highest risk, with an estimated 387,813 properties located in the projected path of Irene. Of the properties at risk in Long Island, roughly 66 percent are located outside a hazard flood zone as designated by the Federal Emergency Management Agency (FEMA). Of the total properties at risk in all 12 areas, 48 percent are not in a designated FEMA flood zone.

The CoreLogic analysis assumes a scenario for a Category 3 hurricane, according to a statement.

Hurricane-driven storm-surge flooding can cause significant property damage when high winds and low pressure causes water to amass inside the storm releasing a powerful rush over land when the hurricane moves on shore. In some cases, properties located outside of designated FEMA hazard flood zones remain exposed to potential storm-surge damage.

CoreLogic said it generates storm surge data using the company’s comprehensive parcel database of property-level data to identify a region’s vulnerability to storm surge given on-shore and off-shore geographic attributes and population density.