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

National Weather Service Alerts Overlay for OBS Studio

If you need assistance configuring this overlay, you can contact me directly at [email protected] or reach out through Discord. I built this system to be powerful yet flexible, and I am always available to help streamers get it running properly inside OBS Studio.

This overlay integrates real-time National Weather Service (NWS) alerts directly into my livestream setup using a clean, broadcast-ready design. It combines two synchronized display modes: animated toast notifications for high-severity events and a continuously updating alert list for ongoing monitoring. The goal is simple: deliver authoritative weather warnings in a format that is immediately visible, easy to understand, and visually professional.

I designed this solution specifically for creators who need reliable, real-time weather data during live broadcasts. It works exceptionally well for IRL streamers, storm chasers, aviation content creators, outdoor event coverage, emergency information channels, and news-style productions. Whenever viewer safety or situational awareness matters, this overlay ensures that critical alerts cannot be missed.

Real-Time Severe Alert Toast Notifications

When the National Weather Service issues a high-severity warning, such as a Severe or Extreme alert, the overlay immediately triggers a prominent animated toast notification. The alert smoothly transitions into view at the center of the screen, drawing attention without disrupting the overall production flow.

Each toast displays essential information in a concise, readable format:

Color-coded severity profiles ensure instant recognition. More critical alerts use stronger contrast and visual emphasis, while lower-priority notices remain visually distinct but less intrusive. This hierarchy allows me to communicate urgency clearly without overwhelming viewers.

I designed the toast system to be impossible to ignore when necessary, yet smooth and professional enough to blend seamlessly into a high-quality broadcast.

Live Updating Weather Alert List

In addition to individual toast notifications, the overlay includes a continuously updating alert list. This list displays all active NWS warnings in real time, sorted automatically by severity and recency.

Each alert appears as a structured broadcast card with consistent formatting, including the alert title, affected region, validity period, and visual severity styling. New alerts animate into the list smoothly, helping viewers track changes without abrupt visual interruptions.

This persistent list is particularly useful for longer live sessions where multiple warnings may remain active simultaneously. It allows my audience to maintain awareness of the broader weather situation while still receiving immediate notification of newly issued severe events.

Smart Filtering and Severity Threshold Control

Not every advisory needs to interrupt a livestream. To prevent alert fatigue, I implemented configurable severity thresholds. This allows me to define which alert levels trigger animated toasts and which remain visible only in the scrolling list.

For example, minor advisories can appear in the list without generating center-screen notifications, while severe or extreme warnings automatically trigger high-visibility alerts. This balance keeps the stream informative without becoming visually overwhelming.

Built-In Demo and Testing Mode

Testing live alert systems can be difficult when real weather events are unpredictable. To solve this, the overlay includes a configurable demo generator. I can simulate alerts of any severity at controlled intervals, making it easy to test layouts, animations, color themes, and positioning within OBS scenes.

This feature is especially useful when designing new broadcast layouts or adjusting overlay placement for different aspect ratios. It ensures that everything functions perfectly before going live.

Full Visual Customization

All styling options are controlled through a centralized configuration file. I can customize background colors, transparency levels, corner radius, font families, text sizing, drop shadows, spacing, and per-severity color schemes. This allows the overlay to match virtually any channel branding.

Alignment tools, including optional placement guides, make it easy to position toast notifications precisely within the safe broadcast area. Whether I am producing a minimalist stream or a complex news-style layout, the overlay adapts accordingly.

Optimized Dual Browser Source Architecture

The system runs as two synchronized browser sources inside OBS Studio: one dedicated to toast notifications and one dedicated to the full alert list. Both sources share cached data and internal synchronization logic, reducing unnecessary API requests while ensuring perfectly consistent alert states across scenes.

This architecture keeps performance efficient, minimizes external load, and ensures stable real-time updates even during extended livestream sessions.

Overall, this National Weather Service Alerts Overlay transforms my livestream into a professional, information-driven broadcast environment. It combines authoritative weather data, intelligent filtering, smooth animation, and complete visual control. For streamers who need reliable real-time weather integration inside OBS Studio, this solution delivers clarity, performance, and broadcast-grade presentation.

Bring this scene design into OBS

The asset is most useful when you treat it as part of a complete scene composition rather than a decorative extra. Test it with your camera, alerts, chat, and gameplay sources so the final setup remains readable.

For this specific resource, the key value is: A broadcast-grade National Weather Service alerts overlay for OBS Studio that shows real-time warnings as animated toast notifications and a. Use the link below only after reading the details above so visitors understand what they are opening and why it belongs in their streaming workflow.

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