| WMO No. 9 - WEATHER REPORTING |
| VOLUME C1 - CATALOGUE OF METEOROLOGICAL BULLLETINS |
Part 1 - Observational Data AND Part 2 - Grid and Grib Bulletins
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METNO MESSAGES
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What is a METNO message?
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METNO messages are meteorological notifications automatically generated from advanced notifications received from the RTHs on the MTN.
If there is no advanced notification for a week, a METNO message with a text "NIL" will be sent so that GTS centres can verify that all METNOs have been received.
METNO Messages are sent at 1500 UTC, every Tuesday and are also available on the WMO FTP server.
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| METNO format |
To differentiate METNO messages related to Volume C1 from those related to Volume A, the following abbreviated headings are used:
- For a METNO message related to Volume A: NOXX01 LSSW YYGGgg
- For a METNO message related to Volume C1: NOXX02 LSSW YYGGgg
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| Example of a METNO message: |
000
NOXX02 LSSW 170400
METNO C0416
1 AA 01/03/2001 6 OFFENBACH GERMANY OFFENBACH 01/03/2001 E PPTA89 EDZW T.4 00,12 24 N 86 W, 55 N 113 E, 06 N 35 E, 20 N 36 E, SCALE 1:30.000.000 (A4) POLAR STEREOGRAPHIC PROJECTION SURFACE WEATHER CHART WITH PLOTTED OBSERVATIONS
2 AA 01/03/2001 6 OFFENBACH GERMANY OFFENBACH 01/03/2001 A PPOG99 EDZW T.4 00,12 43 N 67 W, 61 N 79 E, 19 N 27 W, 27 N 33 E, SCALE 1:30.000.000 (A4) POLAR STEREOGRAPHIC PROJECTION H+00,H+12,H+24,H+36 (LFPW MODEL) SURFACE PRESSURE
NNN
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| Explanation of a METNO message: |
| 000 |
ZCZC |
Transmission sequence number: It is a three-digit group giving the transmission sequence of messages from one centre over a particular channel to the receiving centre on that channel. Numbers 000-999 inlcusive must be used in a cyclic |
| NO |
T1T2 |
Data type and/or form designators. Warning (does not change for a METNO). |
| XX |
A1A2 |
Geographical and/or data type and/or time designators (does not change for a METNO). |
| 02 |
ii |
To indicate that it is a METNO message related to Volume C1 |
| LSSW |
CCCC |
LSSW - for Zurich centre |
| 100400 |
YYGGgg |
Day and hour in UTC for insertion into the GTS. YY= day of the month, GGgg= hour in UTC |
| METNO |
METNO |
Message identifier |
| C |
C |
Sequence of characters to indicate the end of a METNO message. |
| 15 |
XX |
Weekly serial number |
| 08 |
YY |
Year 2008 |
RRx
eg RRA |
BBB |
Used to segment a large set of information into several bulletins; where "x" is an alphabetical character of A - X |
| NNNN |
NNNN |
Sequence of characters to indicate the end of a METNO message. |
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