Floods & Coastal
Floods and coastal hazards on TerraPulse are organized into the flood and coastal
Eventdexes — one slot per event, each a measured record of flooding or a coastal hazard
that actually happened, drawn from the National Weather Service, FEMA, and NCEI. No
estimates, no forecasts.
The dexes
The record lives across two parallel Eventdexes, split by hazard type. Counts are live and grow with every fetch:
| Dex | Holds | Events |
|---|---|---|
coastal | Coastal hazards — surge, coastal flooding, and shoreline events | 15,167 |
flood | Inland and flash flooding events | 3,750 |
Together, about 19,000 measured flood and coastal events, updating continuously as new events are reported.
Provenance
Events trace to the National Weather Service (issued flood and coastal alerts), FEMA (federal disaster declarations), and the NOAA NCEI Storm Events Database (the official record of severe weather impacts). Each source is registered against its dex, so any record on TerraPulse carries a direct line back to the originating observation.
What’s in a record
Each event slot carries:
- Event type — the specific flood or coastal hazard
- Location — latitude, longitude, and affected area
- Time — onset and, where known, end time, UTC
- Severity — the issuing agency’s classification or declaration type
- Impact — damage or effect details, where reported
- Source record — the originating alert, declaration, or storm-event entry