Surge Sentinel

Anticipatory cyclone risk & advisory console — Bay of Bengal

GEE · Sentinel-1 / SRTM DEM Met · IMD + ECMWF Reasoning · Gemini 3.7 Flash

Scenario controls

Cyclone intensity CAT 4

12345

Lead time to landfall 18 h

3hnow-cast → planning window48h

Storm-tide coincidence Spring high

LowMeanSpring +1.4m

Map layers

Storm-surge inundation

Rainfall accumulation

Cyclone track & cone

Critical infrastructure

Dispatch

Gemini composes a CAP-formatted advisory from the current hazard field and pushes it to the channels registered for at-risk wards.

Composite hazard & exposure map

20.3°N 86.6°E · Odisha coast

Surge 0.3–6m

Rain 50–500mm

Substation

Arterial road

Shelter / medical

Impact summary

—

Composite threat index—

Peak storm surge

— m

Peak rainfall

— mm

Population exposed

—

Critical assets at risk

— of 15

Arterial road inundated

— km · evacuation routes affected

Ranked exposure

risk 0–100

Asset	Surge	Rain	Risk

Advisory & dispatch log

Set a scenario and press Generate advisory & dispatch to compose a Gemini early-warning bulletin and simulate its delivery to municipal & district disaster-management authorities.

How it works. Surge Sentinel fuses Google Earth Engine terrain & land-cover (SRTM DEM, Sentinel-1 water extent, built-up masks) with real-time meteorological forecasts (IMD bulletins, ECMWF ensemble) to simulate storm-surge inundation and rainfall damage pathways. Exposure of power grids, arterial roads and medical shelters is scored, and Gemini 3.7 Flash's multimodal reasoning drafts and dispatches CAP-standard advisories to local authorities — shifting response from post-landfall recovery to pre-landfall action.
Risk model. risk = hazard × (0.5·exposure + 0.5·vulnerability), where hazard combines surge depth (surface tide-surge minus DEM elevation, attenuated by along-shore & inland distance) and rainfall accumulation (Gaussian about the forecast track). Synthetic sample data.