Changes in Water Temperature & Color

Unusual Noises

Loud Roaring Sound from the Ocean

Increased Seismic Activity

Small Cracks & Depressions in the Ground

Cliff or Beach Retreat

Unusual Animal Behavior

Strong or Long-Lasting Earthquake Near the Coast

Subsidence of the Ground

Loud Noises or Explosions

Sudden Receding of Ocean Water (Drawback Effect)

Increased Wave Intensity

Sudden Loss of Ground Strength

Buildings or Structures Tilting or Sinking

Collapse of Coastal Infrastructure –

Heavy or Prolonged Rainfall

Ground Deformation (Bulging, Cracks, Uplift)

Doors & Windows Sticking or Misaligning

Gas Emissions (Sulfur, Carbon Dioxide, Steam)

Cracks in the Ground or Buildings

Rumbling Sounds

Ground Cracks or Changes in Water Levels

Unusual Ocean Behavior

Water Appearing on the Ground Surface

Leaning Trees, Poles, or Fences

Sudden Changes in Water Drainage –

Sudden Water Seepage

Small Tremors (Foreshocks)