It's been over a year since I last posted an update on this blog about HadISD. I suppose that's because everything has been ticking along nicely.
The dataset has been updated every month with version 3.1.2.202102p just being released. That contains data from 1-Jan-1931 to 28-Feb-2021.
In the recent update of all data in the deep past to create v3.1.2.202101p (and the new station selection that goes with that), we have filled in a gap during April 2015 which was inadvertently left in the ISD. There has been a healthy increase in the number of stations in that update as well, with now 9278 stations in the dataset.
At the end of last year, we released a Product User Guide, to help users with the dataset. If you have any thoughts or suggestions about this, or anything else with HadISD, do get in touch.
