new updates coming soon:) plan to add hurricane tracks

Weather Alerts Revamp

A web app that displays live weather alerts from the US National Weather Service (NWS), overlays them on a map, and lets you toggle the latest NWS radar mosaic.
Built with HTML, Bootstrap, and Leaflet – no backend required.

Features

• Live NWS Alerts: Fetches all current US NWS alerts from weather.gov.
• Map Visualization: Alerts are shown on an interactive map using Leaflet, with polygons/areas and points correctly colored by severity.
• NWS Radar Overlay: Toggle the latest NWS radar mosaic (reflectivity) as a semi-transparent overlay above the base map and below the warnings.
• Responsive Design: Works on desktop and mobile.
• Dark Mode: Toggle dark mode for better nighttime viewing.
• Filters & Search: Search alerts by text or filter by severity.
• Location Filter: Show only alerts near your current location (uses browser geolocation).
• No Backend Needed: Fully static, just serve the HTML file.

How to Use

1. Open index.html in any modern browser.
   You can host it anywhere (GitHub Pages, Netlify, Vercel, S3, etc.)

2. Map Controls:

   • Use the "Show Alerts For My Location" button to center and filter to your location.
   • Search and filter alerts using the input and dropdown.
   • Use the "Toggle Radar" button to turn the radar overlay on or off.
   • Toggle dark mode with the 🌙 button in the top bar.

3. Viewing Alerts:

   • Alerts appear as colored polygons or markers.
   • Click any polygon or marker for details and a link to the official alert.

Technical Details

• Alerts: Fetched live from https://api.weather.gov/alerts/active
• Radar: WMS overlay from NOAA OpenGeo
• Map: OpenStreetMap tiles via Leaflet
• No API Key Required

Alert Polygon Coloring

• Red: Warning
• Orange/Yellow: Watch
• Blue: Advisory

Radar Layer

• Source: NOAA/NWS NEXRAD Composite
• Opacity is set to 0.6 by default (adjust in code if desired).
• Always appears under the alert polygons/markers.

Accessibility & Browser Support

• Uses semantic HTML and ARIA labels for accessibility.
• Geolocation may require HTTPS.
• Works in all modern browsers (Chrome, Firefox, Edge, Safari).

Attribution

• Weather alerts and radar by NOAA/NWS.
• Map data by OpenStreetMap.
• Built with Leaflet and Bootstrap.

License

MIT License.

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This is a static, client-only project. No personal data is collected or stored.