Snow Across the Great Lakes, Central Appalachians, and Northeast; Unsettled Weather in the West

Light to moderate snow will continue into Saturday over the Great Lakes, Central Appalachians, and Northeast. This weekend into next week, a series of atmospheric rivers will bring gusty winds, periods of heavy rain, and mountain snow to northern California and the Pacific Northwest. Colder temperatures are in store for the weekend from the Great Lakes to East Coast. Read More >

Hazard Map

Threat Levels

Safety & Impact

Graphical Hazardous Weather Outlook
Coastal Flood Threat

The "Coastal Flood Hazard Map" depicts the local threat of coastal flooding for specified areas within vicinity of the coast based on the adverse affects of surf conditions as salt water is deposited onto the beach.

Coastal Flood Threat Level	Threat Level Descriptions
Extreme	"An Extreme Threat to Life and Property within the Coastal Zone from Salt Water Flooding." Persistent battering surf conditions (lasting more than 36 hours) ... or... major extra-tropical storm surge event. The potential for widespread breaching of dunes and seawalls. Near-shore roads may become weakened or washed out affecting local escape routes. Shoreline structures may experience significant damage resulting in local evacuations. Significant damage to marinas and piers may occur.
High	"A High Threat to Life and Property within the Coastal Zone from Salt Water Flooding." Battering surf conditions (lasting less than 36 hours) ... or... moderate extra-tropical storm surge event. The potential for surf to breach dunes and seawalls in scattered locations which may begin to affect sections of near-shore roads and shoreline structures. Some damage to marinas and piers may occur.
Moderate	"A Moderate Threat to Life and Property within the Coastal Zone from Salt Water Flooding." High (very heavy) surf conditions which may cause major beach erosion. The potential for surf to breach dunes and seawalls in isolated locations, mainly in historically vulnerable spots.
Low	"A Low Threat to Life and Property within the Coastal Zone from Salt Water Flooding." High (heavy) surf conditions which may cause moderate beach erosion.
Very Low	" A Very Low Threat to Life and Property within the Coastal Zone from Salt Water Flooding." Rough surf conditions which may cause minor beach erosion.
Non-Threatening	" No Discernable Threat to Life and Property within the Coastal Zone from Salt Water Flooding." Surf conditions are non-threatening.
Note: During times of high tide, larger volumes of water will be transported onto the beach. This may further aggravate the coastal flood situation.

Threat Awareness