Early warning

Alert subscriptions

Subscribe to a waterbody and threshold — no email needed, it stays on this device. Check anytime to see crossed thresholds with the SHAP explanation and an optional FHIR R4 bundle export.

Anonymous — subscriptions live on this device, no email needed.

Alert threshold60%
Starting pointDefault — no type known — 55% at 5-day.

Alert delivery on this device

Free on every tier: browser notifications plus an ntfy phone channel. Checks run every minute while this page stays open — there is no background dispatcher on the free tier.

This browser cannot show notifications — use Chrome or Edge.

Anyone who guesses the topic can read these alerts — use something unguessable.

Not watching.