Weather Abbreviations and Acronyms

1. ASMD
   As Amended
2. B/T
   Between
3. INSTL
   Install
4. CCW
   Counter-Clockwise
5. MCW
   Modulated Continuous Wave
6. SMW
   Special Marine Warning
7. SSW
   South Southwest
8. addtl
   Additional
9. MASS
   Massachusetts
10. SPS
    Special (Weather) Statement
11. D&C
    Discontinue
12. D&C
    District of Columbia
13. AAWU
    Alaskan Aviation Weather Unit
14. ANTE
    Before
15. ASS'N
    Association
16. ICOA
    International Civil Aviation Organization
17. ISQ
    No Change
18. MARD
    Modernization and Restructuring Demonstration
19. NATA
    National Air Transportation Assoc.
20. PASS
    Passage

Last updated: May 24, 2020 — Total entries: 5,472