HYSPLIT Forum: hysplitbbs.arl.noaa.gov

Under the start time (UTC), shouldn’t I be able to choose yesterday’s date? When I tried it on April 14, 2020, I was able to choose April 13, 2020. But now, I cannot go back. Any help is appreciated.

After choosing a location and the "GDAS (1 degree, global, 2006-present)" meteorology for an archive trajectory run, you will be asked to choose an archived meteorological file at https://www.ready.noaa.gov/hypub-bin/trajsrcm.pl. The "current7days" option is selected by default. Try the "gdas1.apr20.w2" option to covers the 2nd week of April 2020. April 8th to 14th should be available.

Thank you.