A storm surge locally termed daluyong ng bagyo is the abnormal rise in sea level above normal tidal levels that occurs during a tropical cyclone. This rise is not caused by rainfall or tsunami activity but primarily by strong winds and low atmospheric pressure generated by the cyclone, which push ocean water toward and over coastal land. When a storm surge coincides with high tide, its height and inland reach can increase significantly, flooding areas that may otherwise remain dry. Big waves accompanying the surge further amplify coastal inundation and damage.
Why It Matters in Albay
Albay’s long, low-lying coastline along the Philippine Sea makes many of its coastal municipalities and barangays vulnerable to storm surge. Elevated water levels can inundate homes, roads, fishponds, and infrastructure, disrupt marine navigation and livelihoods, erode beaches, and pose life-threatening risks to residents. Communities near sea level — especially during the passage of tropical cyclones — are at highest risk.
How Storm Surge Is Assessed
PAGASA uses several factors when forecasting storm surge impacts:
- Cyclone strength and wind field — stronger winds push more water.
- Expected storm surge height — measured relative to normal high tide.
- Topography and elevation of coastal areas — lower elevations face greater inundation.
Storm surges are among the deadliest coastal hazards associated with tropical cyclones because they can arrive with little warning and overtop defenses or natural barriers. Being informed about what a surge is, how it behaves, and how warnings are structured significantly increases community resilience and safety.
SOURCE: PAGASA
