Tropical Storm Arthur has been declared extratropical, so the National Hurricane Center is no longer issuing advisories on it. But that doesn’t mean it no longer packs a punch: Arthur is now a galestorm, whipping up wind and rain as it rolls past Newfoundland. You can read the Hurricane Center’s final public advisory on Arthur, check out the final meteorological discussion of the storm, view the latest satellite loop, or read local coverage in The Telegram, the newspaper in St. John’s, Newfoundland.

Storms are also raging on the Sun, where a giant sunspot — long enough to fit 15 Earths from end to end — is moving across the surface of the Sun. It is still growing, and you can see it yourself (if you use safe solar projection methods, of course), according to SpaceWeather.com.

There are even storms in space, thanks to solar flares emitted by the above-mentioned sunspot. On Monday, a strong “X-class” solar flare hurled a Coronal Mass Ejection into space, creating a chance for Northern Lights on Earth tomorrow (Wednesday). Scientists say there is a 10 percent chance of severe auroras that could be seen all over the planet, even in southern latitudes. Another Coronal Mass Ejection caused by another solar flare on Tuesday could also produce auroras, perhaps on Thursday. Again, stay tuned to SpaceWeather.com for the latest.