Myth: every spike on the trackers means an algorithm update

Myth: every spike on the trackers means an algorithm update
This week on the radar — the reflex to call every red day on a volatility tool a "Google update."

The correction
Tracker sensors measure SERP movement, which has many causes beyond ranking-system changes.

Read this
— Semrush Sensor methodology — volatility can rise from new SERP features, indexing churn, or seasonal query shifts, none of which are algorithm pushes.
— Mozcast documentation — describes "weather" as turbulence, repeatedly cautioning it is not an update detector.

Chatter
— Search Engine Roundtable regularly separates confirmed updates from "unconfirmed volatility," precisely because the trackers light up without a Google announcement.

The nuance: sustained, multi-tool, multi-day movement is signal; one tool's one-day spike is noise.

One to bookmark: the Semrush Sensor methodology page — it spells out what the number does and doesn't mean.