The site acquires data from the NCEP NOMADS server. Problems with NOMADS, which are unfortunately fairly frequent, are typically the main cause of failed updates. This page will be updated manually when I am aware of problems with the site.
2021-09-29 1940 UTC: Site updated following restoration of NOMADS.
2021-09-29 1200 UTC: Problems with NCEP’s NOMADS server have prevented updates working so far today.