---
title: "Change Detection & Volatility Alerts — Lemwatch Help"
description: "Detect sudden performance changes and content modifications."
canonical: "https://lemwatch.com/help/change-detection"
source: "https://lemwatch.com"
---

# Change Detection & Volatility Alerts

> Detect sudden performance changes and content modifications.

## Change Detection & Volatility Alerts

### What It Detects

 LemWatch automatically identifies two types of changes:

 **Sudden Changes (±15 point swings)** When any metric changes by more than 15 points between checks, LemWatch flags it as a "Sudden Change". This often indicates:

- A deployment that impacted performance

- A CDN configuration change

- A third-party script causing issues

- Server-side changes (e.g., database migration)

 **Performance Volatility (range > 25 points)** When a metric fluctuates by more than 25 points over a 30-day window, it's flagged as "Volatile". This may indicate:

- Inconsistent server performance

- Intermittent third-party script issues

- Traffic-dependent performance problems

### How It Works

 LemWatch compares rolling averages and tracks standard deviations across your metric history. Anomalies are surfaced as actionable insights on your site's dashboard.

### Content Change Tracking

 LemWatch also monitors your page content for changes:

- Text additions and removals

- Structural changes (headings, sections)

- Significance scoring (minor typo fix vs. major content overhaul)

### Where to See Changes

 Navigate to your site's **Changes** tab to see a timeline of detected changes with severity and timestamps.


## Related

- [Help centre](https://lemwatch.com/help)
- [Baseline Comparisons](https://lemwatch.com/help/baselines)
- [Setting Performance Budgets](https://lemwatch.com/help/performance-budgets)
- [Incident Playbooks](https://lemwatch.com/help/playbooks)
- [Maintenance Windows](https://lemwatch.com/help/maintenance-windows)
- [Lemwatch pricing](https://lemwatch.com/pricing)
- [How to Change Your Email or Password](https://lemwatch.com/help/change-email-password)
- [Certificate Transparency Monitoring](https://lemwatch.com/help/certificate-transparency)