NWS Severe Weather Alerts Overlay for OBS - Live Toast & Alert List System

National Weather Service Alerts Overlay for OBS Studio

If you are experiencing difficulties configuring this overlay, feel free to contact me at [email protected] or reach out directly on Discord.

This professional alert system brings real-time National Weather Service (NWS) warnings directly into your livestream using a dual-mode overlay: animated toast notifications for critical events and a live-updating alert list for continuous on-screen monitoring.

The system is ideal for IRL streamers, weather channels, news-style broadcasts, aviation streams, emergency coverage, and outdoor events where timely and clearly visible warnings are essential for viewer safety and situational awareness.

Real-Time Severe Alert Toasts

When a new high-severity warning is issued (such as Extreme or Severe alerts), a visually prominent toast notification animates into view at the center of the screen. Each toast displays the alert level, time, headline, short description, affected area, and an official NWS source label.

Severity-based color profiles, emoji icons, and accent styling ensure instant recognition of critical events, even at a glance during live broadcasts.

Live Scrolling Alert List

Alongside toast notifications, the overlay provides a full alert list view that continuously displays all active weather warnings. Alerts are automatically sorted by time and severity, animated on entry, and styled as clean broadcast cards with icons, titles, affected regions, and validity periods.

Smart Filtering & Thresholds

You can define which alert levels should trigger on-screen toasts, allowing minor advisories to remain in the list while only severe or extreme warnings interrupt the stream visually. This prevents alert fatigue while still ensuring critical information is impossible to miss.

Configurable Demo & Testing Mode

A built-in demo generator can simulate alerts of any severity at configurable intervals, making it easy to test layouts, animations, colors, and scene composition without waiting for real weather events.

Full Theme & Layout Customization

All visuals are controlled via a single configuration file. You can customize background colors, opacity, corner radius, fonts, text sizes, shadows, emoji sets, per-severity color profiles, and even enable a dashed placement guide to perfectly align the alert toast within your broadcast safe area.

Dual Browser Source Architecture

The system is designed to run both a toast scene and a list scene simultaneously using synchronized data caching and inter-source communication, ensuring minimal API load and perfectly consistent alert states across multiple OBS sources.

This NWS Alerts Overlay transforms your stream into a professional emergency information channel, delivering authoritative, real-time weather warnings with broadcast-quality visuals, smooth animations, and full control over appearance and behavior.