WMO>WWW >WWW Operational Information Service (OIS)> TAAii CCCC


Explanation of Data Designators T1T2A1A2ii CCCC
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.


A2 designator A2 - Reference Time Designator
A Analysis (00 hour)
B 6 hours forecast
C 12 hours forecast
D 18 hours forecast
E 24 hours forecast
F 30 hours forecast
G 36 hours forecast
H 42 hours forecast
I 48 hours forecast
J 60 hours forecast
K 72 hours forecast
L 84 hours forecast
M 96 hours forecast
N 108 hours forecast
O 120 hours forecast (5 days)
P 132 hours forecast
Q 144 hours forecast
R 156 hours forecast (7 days)
S 168 hours forecast
T 10 days forecast
U 15 days forecast
V 30 days forecast
W Not assigned
X Not assigned
Y Not assigned
Z Not assigned



CBS Meetings
Reports of Meetings
Abbreaviated Heading
Symbolic Structure explained
Table Definitions
Table A
Table B1
Table B2
Table B3
Table B4
Table B5
Table B6
Table C1
Table C2
Table C3
Table C4
Table C5
Table C6
Table C7
Table D1
Table D2
Table D3
Indicator BBB

©2016 World Meteorological Organization, 7bis, avenue de la Paix, Cp No. 2300, CH-1211 Geneva 2, Switzerland - Tel.: +41(0)22 730 81 11 - Fax: +41(0)22 730 81 81Disclaimer | UN System | Accessibility


  Extranet Homepage Website Public Comms