| WMO>WWW >WWW Operational Information Service (OIS)> Telecommunications Abbreviated Heading - TAAii CCCC
| Explanation of Data Designators T1T2A1A2ii CCCC |
| TABLE C4 |
| Reference time designator A2 (when T1 = D, G, H, J, O, P or T) |
| Instructions for the proper application of the level designators |
| (1) |
The designators specified in this table should be used to the greatest extent possible to indicate the reference time of data contained within the text of the bulletin. |
| (2) |
Where the table does not contain a suitable designator for the reference time, an alphabetic designator which is not assigned in the table should be used. |
| T1 |
A2 |
A2 - Reference Time Designator |
| D, G, H, J, O, P or T |
A |
Analysis (00 hour) |
| D, G, H, J, O, P or T |
B |
6 hours forecast |
| D, G, H, J, O, P or T |
C |
12 hours forecast |
| D, G, H, J, O, P or T |
D |
18 hours forecast |
| D, G, H, J, O, P or T |
E |
24 hours forecast |
| D, G, H, J, O, P or T |
F |
30 hours forecast |
| D, G, H, J, O, P or T |
G |
36 hours forecast |
| D, G, H, J, O, P or T |
H |
42 hours forecast |
| D, G, H, J, O, P or T |
I |
48 hours forecast |
| D, G, H, J, O, P or T |
J |
60 hours forecast |
| D, G, H, J, O, P or T |
K |
72 hours forecast |
| D, G, H, J, O, P or T |
L |
84 hours forecast |
| D, G, H, J, O, P or T |
M |
96 hours forecast |
| D, G, H, J, O, P or T |
N |
108 hours forecast |
| D, G, H, J, O, P or T |
O |
120 hours forecast (5 days) |
| D, G, H, J, O, P or T |
P |
132 hours forecast |
| D, G, H, J, O, P or T |
Q |
144 hours forecast |
| D, G, H, J, O, P or T |
R |
156 hours forecast (7 days) |
| D, G, H, J, O, P or T |
S |
168 hours forecast |
| D, G, H, J, O, P or T |
T |
10 days forecast |
| D, G, H, J, O, P or T |
U |
15 days forecast |
| D, G, H, J, O, P or T |
V |
30 days forecast |
| D, G, H, J, O, P or T |
W |
Not assigned |
| D, G, H, J, O, P or T |
X |
Not assigned |
| D, G, H, J, O, P or T |
Y |
Not assigned |
| D, G, H, J, O, P or T |
Z |
Not assigned |
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