El Nino Watch
An incident is a place where one or more sources (news, agencies, official accounts) report flooding. It is a report, not a measurement: the confidence chip says how well it is confirmed.
Hazards
Measured means an instrument recorded a number: a rain gauge, a river level sensor, a satellite. Reported means a person or an outlet said it: a news article, an official post, a social media account.
Reports are fast (often hours before any official map) but can be wrong, late, duplicated or about a different place with a similar name. The app groups every report about the same place into one incident and lists each source with its outlet, time and link, so you can check them yourself.
How an incident is built: every news, social and official item of the last 72 hours that names both a hazard (flood, flash flood, landslide, storm, heavy rain, in English or Thai) and a Thai place (77 provinces plus major cities, islands and airports) is grouped by place and hazard. A new incident starts after 48 hours without a report for that place.
Confidence (counted in independent outlets: "Bangkok Post", bangkokpost.com and @BangkokPostNews count once):
Severity (from the words of the reports):
On the map, a bigger circle = more sources, colour = severity (red severe, orange moderate). Click a circle to see every source. "First seen" = the oldest report, "last seen" = the newest.
During the September 2026 floods, news reported Bangkok and Pattaya flooding before any gauge-based map. Reports give the where; measurements give the how much.