Space Weather by SolarHam
Space weather portal. Looks like a pretty dense but also really handy view of what the Sun's up to at the moment.
Chasing the Beast: El Reno tornado kills storm chaser Tim Samaras
Some details on what happened to Tim Samaras and his crew.
Free Open-Source Weather API | Open-Meteo.com
A very comprehensive-looking free weather API; looks like the perfect sort of thing to build on top of. No API keys needed too!