Since yesterday (5 January 2022), the NWS has been experiencing a significant outage of its College Park, MD datacenter. This outage is causing various NCEP model datasets and others to not be available for processing. It is difficult to quantify the troubles this is causing IEM processing, but please be aware if you see various products in an error state :( The current NWS ETR is tomorrow (7 January 2022) morning.
Updated 6 Jan 2 PM: The NOMADS NCEP site is working and I have moved some processing over to it, so more data is flowing now than before. The NWS has updated that the College Park outage is now hoped to be fixed by Saturday morning.
Updated 10 Jan 9 AM: Everything should be back to normal now.