The Paranormal Database has released their 2009 Paranormal Calendar for those who wish to watch out for specific events in the UK. It's a 3 Mb download in PDF format.
Not sure about the format this time, the background makes it hard (for me) to read. I find the online version much easier to see. There's also a section on weather dependent phenomena - although these are always difficult to chase. Things reputed to happen immediately after a storm are okay, if you're always ready and as long as you don't fall asleep before the storm ends, but quite how you chase something that happens just before a storm is more difficult to determine. That must be down to pure luck, since weather forecasting seems to be even less reliable than some of the reported manifestations.
If you're in the UK, or interested in paranormal phenomena in the UK, the site is invaluable. Most of the reports come from England, but that's more to do with the numbers of people reporting than the spread of phenomena. As the database grows, I expect it will even out across the country.
I hope it grows big enough to spread beyond the confines of the UK but that's asking for a lot of work from the site owners. So, does anyone know of sites cataloguing similar events for other countries?
If I can remember how, I could put the links in the sidebar.