We found one dictionary that defines the word supplemental observations:

Tech (1 matching dictionary)

1. Glossary of Meteorology (No longer online)

▸ Words similar to supplemental observations ▸ Usage examples for supplemental observations ▸ Idioms related to supplemental observations ▸ Wikipedia articles (New!) ▸ Words that often appear near supplemental observations ▸ Rhymes of supplemental observations ▸ Invented words related to supplemental observations