| Bit No. |
Flag Value |
Description |
Unit |
Status |
| 0 |
|
Seconds prior to initial reference time (defined in Section 1) |
s |
Operational |
| 1 |
|
Geographical latitude |
deg N |
Operational |
| 2 |
|
Geographical longitude |
deg E |
Operational |
| 3 |
|
Days since last observation |
d |
Operational |
| 4 |
|
Tropical cyclone density track |
Numeric |
Operational |
| 5 |
|
Hurricane track in spatiotemporal vicinity |
boolean |
Operational |
| 6 |
|
Tropical storm track in spatiotemporal vicinity |
boolean |
Operational |
| 7 |
|
Tropical depression track in spatiotemporal vicinity |
boolean |
Operational |
| 8-191 |
|
Reserved |
|
Operational |
| 192-254 |
|
Reserved for local use |
|
Operational |
| 255 |
|
Missing |
|
Operational |