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French system for METAREA VIII (S)



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4. French system for METAREA VIII (S)




4.1. SafetyNet system

La Réunion prepares tropical cyclone warnings for METAREA VIII (S) (headers WTIO20 FMEE and WTIO22 FMEE), every 6 hours when needed.

Mauritius prepares scheduled bulletins (headers FQIO25 FIMP and FQIO26 FIMP) that are received in La Réunion via FTP protocol. Parts I of those bulletins have to be in accordance with warnings elaborated by La Réunion, if any.
All those messages (scheduled bulletins and warnings) are sent, using a TCP/IP link, to the national weather centre of Météo-France in Toulouse for transmission to the CES of Aussaguel (for broadcast over IOR). Goonhilly is also used as the back-up station.

Scheduled bulletins, if available, are transmitted automatically to the CES near the agreed WMO times of 0130 and 1330 UTC. Warnings are broadcast as soon as available with a 6 minute echo.

Forecasters in La Réunion are able to display the broadcast bulletins using a C terminal at their disposal.
There is no French Navtex in Metarea VIII(S).

4.2. SafetyNet bulletins



scheduled bulletins:

Those messages are issued from Mauritius. Part 1 (warning recall) has to be in accordance with the last warning of La Réunion, if any.


warnings:

Cyclone warnings are issued for winds of Beaufort force 8 and above (as recommended by WMO) observed or expected in the next 24 hours.

8 parts:

- beginning of validity

- phenomenon (type, name, pressure)

- position

- movement


  • Menaced areas (radius for gale, storm, hurricane winds - sea state)

  • Forecasted positions (12h)

  • Forecasted positions (24h)

- other informations.
For example of tropical cyclone warnings, see annex 12.

4.3. Chronology since the beginning of implementation





Date

Event

16 December 1997

Scheduled bulletins from Mauritius are transmitted to Aussaguel CES on an pre-operational basis by the national weather centre of Météo-France in Toulouse

1st January 1998

Scheduled bulletins from Mauritius and warnings from La Réunion are transmitted to Aussaguel CES on an operational basis by the national weather centre of Météo-France in Toulouse

31 January 1998

South Africa stops broadcasting messages from mauritius and La Réunion

1st February 1998

installation of a Inmarsat-C SES in La Réunion, for checking the INMARSAT broadcast

31 March 1998

South Africa stops checking the INMARSAT broadcast

1st July 1998

relief procedures are now automatically run thanks to the new system used for transmissions to CES in Toulouse



4.4. Feedback from users

no complaint about contents or broadcasting time of meteorological messages.



4.5. Monitoring

Real time checking of the transmission to the CES is available by displaying the files containing the interactive dialogues between our Center in Toulouse and the CES.



Forecasters in La Réunion have also a Inmarsat-C SES at their disposal to check manually the broadcasting.
Table IV : transmission of scheduled bulletins to CES for Metarea VIII(S) (%) - January 1999/June 2002



IOR




Year 1999

Year 2000

Year 2001

Year 2002




Available

Non available

Available

Non available

Available

Non available

Available

Non available

Month

within H15 min.

within H30 min.

within H15 min.

within H30 min.

within H15 min.

within H30 min.

within H15 min.

within H30 min.

01

93

94

26

97

98

11

95

97

15

96

96

18

02

95

96

4

98

98

3

100

100

23

90

96

21

03

97

98

2

100

100

8

98

100

3

97

97

16

04

97

100

5

100

100

13

98

98

3

100

100

5

05

97

100

3

100

100

3

98

100

16

98

98

26

06

98

98

7

100

100

8

98

98

0

100

100

20

07

100

100

2

98

100

13

100

100

0










08

97

97

5

98

98

5

100

100

13










09

97

98

7

98

98

10

98

98

10










10

100

100

2

98

98

10

98

98

11










11

95

98

3

91

92

20

100

100

7










12

95

100

3

98

98

3

98

98

2















comment : Non Available rates are due to material links problems between Mauritius and La Réunion.



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