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Roberto
04-08-11, 16:08
DOes anyone know if there are other *Fleet Code charts* available to download on the internet ?
I have only found this
http://weather.noaa.gov/pub/data/raw/fs/fsxx21.egrr..txt

which once decoded becomes

http://i174.photobucket.com/albums/w111/brancaleone_2007/2010/IAC2.jpg

In particular, I am interested in the equatorial/tropical Atlantic areas

*Only Fleet code charts please*, I have all I need with radiofax, internet charts etc. :smile:

markdj
04-08-11, 17:48
I have never seen this type of semi-grib style text files before. Is there any further information available about these fleet codes? how do you decode the txt file?

I would be interested in listing this on my weather portal.

Sandyman
04-08-11, 17:58
More info please.

markdj
04-08-11, 18:05
I've just had a quick look for IAC Fleet Code charts.

As far as I can tell, there is only one zone and there are 4 runs a day. You can download the current Surface analysis and a 24hr synoptic forecast using zyGrib software with the files being about 1.25kb in size !!!!!

A quick search for the 2 files...

http://weather.noaa.gov/pub/data/raw/fs/fsxx21.egrr..txt
ftp://tgftp.nws.noaa.gov/data/raw/fs/fsxx21.egrr..txt

and

http://weather.noaa.gov/pub/data/raw/as/asxx21.egrr..txt
ftp://tgftp.nws.noaa.gov/data/raw/as/asxx21.egrr..txt

Hope this helps.

lenseman
04-08-11, 18:42
Sandyman

zyGRIB.org is the place to go. ;)

Sandyman
04-08-11, 18:48
Tks David

Have downloaded it but puter will not open file.

Roberto
04-08-11, 18:57
not a lot more info, but basically they are very small numeric files which can represent weather charts.
They are particularly handy in case of difficulties in receiving HF weather charts, if one has limites bandwidth: they are 1-2-3kb only which is very easy to download through iridium or SSB Pactor/Winmor; even a modest GRIB file is easily 2-3-4 time bigger and far from providing a comparable overall picture

The file can be decoded through Zygrib, or a WIAC Decoder (just google), or PhysPlot (available from Pangolin.co.nz), all free software.
I could not decode the files above with Physplot for some reason.

The two charts for the Atlantic I am aware of are the same as indicated by markdj (just seen the message), surface analysis and 24h forecast, the weather.noaa.gov directories are so huge to be practically unfathomable so if anyone knows of other direct addresses to other parts of the Atlantic...



There is a Fleet code surface + prog chart for the south pacific too, sent by Fiji, which seems to have a vast following; it can be downloaded directly from sailmail/airmail catalogue; the two files above can be requested through saildocs instead.

lenseman
04-08-11, 19:02
If you Google "IAC Fleet Code" you will get loads of info. :)

lenseman
04-08-11, 19:17
This blog will also give you some more information:

http://www.svsoggypaws.com/pacwx-SSB.htm

Roberto
04-08-11, 19:35
If you Google "IAC Fleet Code" you will get loads of info. :)

thanks David,
I have gone through all possible google search flavours during the last two days but could not find any internet address of other atlantic fleet code charts apart from the two mentioned above


oh yes, I have all the south atlantic through Brazil but lack mid- and north tropical atlantic, so if anyone sees a reference...

:smile:

lenseman
04-08-11, 19:59
Tks David

Have downloaded it but puter will not open file.

Are you running Windows 7 as I think it won't run with that OS? :confused:

Sandyman
04-08-11, 20:11
Are you running Windows 7 as I think it won't run with that OS? :confused:

Vista David. Try as I might it wont open.

franksingleton
06-08-11, 20:01
DOes anyone know if there are other *Fleet Code charts* available to download on the internet ?
I have only found this
http://weather.noaa.gov/pub/data/raw/fs/fsxx21.egrr..txt

which once decoded becomes

http://i174.photobucket.com/albums/w111/brancaleone_2007/2010/IAC2.jpg

In particular, I am interested in the equatorial/tropical Atlantic areas

*Only Fleet code charts please*, I have all I need with radiofax, internet charts etc. :smile:

Fleet Code dates back to the days when weather messages were broadcast by morse from Portishead. The mssages were prepared by manual coding of a synoptic chart. I do not know who broadcasts then nowadays. Presumably ALRS will tell you. In the depths of my memory bank, I seem to recollect that New Zealand broadcast such charts on HF/SSB.

Nowadays, they will be on some RTTY broadcasts but not DWD. . I think that they are on INMARSAT-C?

Roberto
06-08-11, 20:51
Fleet Code dates back to the days when weather messages were broadcast by morse from Portishead. The mssages were prepared by manual coding of a synoptic chart. I do not know who broadcasts then nowadays. Presumably ALRS will tell you. In the depths of my memory bank, I seem to recollect that New Zealand broadcast such charts on HF/SSB.

Nowadays, they will be on some RTTY broadcasts but not DWD. . I think that they are on INMARSAT-C?

thanks Frank [btw, you may remember us, the family at Alcoutim, myself sewing the awning on the pontoon under a 40 sun ?]


indeed I am experiencing a lot of difficulties in finding other sources, I have found this for Brazil which is quite nice, with a 3-4kb file one gets this map (24h forecast), plus the official Metarea V offshore text bulletin (with a 48h forecast), plus the various Brazil coastal areas.
Often one finds "Wind NE to SE 4/5 sometimes 6" which is not too useful, but strong wind warnings and swell warnings are usually rather accurate for what we have seen so far.

http://i174.photobucket.com/albums/w111/brancaleone_2007/2010/IACBrasil.jpg

it's a pity there are not other sources, for those with iridium or ssb a 3kb file with all this info is difficult to beat

regards
roberto

franksingleton
07-08-11, 07:35
Of course we remember you and admiring your stamina in the heat, patience and workmanship. We thought that you had got the design wrong - until we saw the finished article.

Best wishes to you all from Anhinga.

Thanks for the information.

franksingleton
07-08-11, 08:03
This page might help. Also try http://www.pangolin.co.nz/yotreps/index.php. The people that run this are the most likely to be able to help.

The Fiji Fleet code surface analysis is at http://www.pangolin.co.nz/yotreps/postings.php?tab=fiji_fleet&title=Fiji%20Fleet%20codes

oldvarnish
09-08-11, 10:14
I have found this for Brazil which is quite nice, with a 3-4kb file one gets this map (24h forecast), plus the official Metarea V offshore text bulletin (with a 48h forecast), plus the various Brazil coastal areas.
Often one finds "Wind NE to SE 4/5 sometimes 6" which is not too useful, but strong wind warnings and swell warnings are usually rather accurate for what we have seen so far.



Roberto,

I'd be very grateful for a link to that S Atlantic chart

lenseman
09-08-11, 11:16
Roberto,

I'd be very grateful for a link to that S Atlantic chart

You might find this link useful in pointing to various sea areas and the associated weather reports:

http://weather.gmdss.org/index.html

Roberto
10-08-11, 00:25
Roberto,

I'd be very grateful for a link to that S Atlantic chart

one surface analysis chart can be found here
https://www.mar.mil.br/dhn/chm/meteo/prev/cartas/cartas.htm
it is broadcast by weather fax too (see same site for frequencies and schedule) but for what I have experienced (and I have a not too bad radio station on board) the transmitters are positioned in a strange way (and have not too much power too) and depending on your position you may receive the chart or not... they send the surface analysis and also a +36h wind forecast


then there is what they call "meteoromarinha", a text bulletin with situation, 24h and 48h forecast, the text part

lenseman
10-08-11, 10:59
Another useful web-site is this one even though they seem to think that the anything south of the equator including the South Atlantic does not exist. :eek:

http://www.opc.ncep.noaa.gov/index.shtml

Roberto
10-08-11, 19:11
Feedback:
I asked directly to the US NOAA - Marine weather section, and they said that there are no other Fleet code products available, that is the only ones from the US are the two mentioned above; no fleet code charts for Equatorial nor Tropical Atlantic.






Roberto,

I'd be very grateful for a link to that S Atlantic chart


sorry my former message has been cut (it was late at night).
The Brazilian bulletin is called Meteoromarinha, it is mainly a text bulletin (situation, 24 forecast, 48 forecast, weather warnings).
The same text bulletin is broadcast via radio through Fleetcode (see "IAC Fleetcode" on the same site) and also made available through the internet: the advantage is that the Fleet code file includes the weather chart.
The complete file as-is is about 8-9kb, but the compression softwares (at least saildocs') reduce it to 3-4kb, as I said no way a GRIB can give all that info with a similar size.

It's a bit longish to explain it step-by-step, but try to click on the Brazil Met Office under "IAC Fleet code" and see if you can get it, otherwise if you want send me a pm, we are moving from our boat during the next few days so if I do not answer immediately please be patient, or send me a PM if I am too late :smile:


PS I think you might be interested in forecasts about the SouthAm tip and Antartica, apart from Chile and Argentina, Brazil also offer their own forecasts, which may not be a bad idea to look at when one feels the need of an additional source.

regards
rr

oldvarnish
11-08-11, 18:53
Thanks. That's a great help. I found the page and clicked on the IAC code. It gave me a text file with lots of numbers. Where do I go from there. I'm planning on heading south and this is all useful information. Thanks again.

Roberto
11-08-11, 20:25
Thanks. That's a great help. I found the page and clicked on the IAC code. It gave me a text file with lots of numbers. Where do I go from there. I'm planning on heading south and this is all useful information. Thanks again.


ok,

the file you find is of the form PYYMMDD00.IAC or PYYMMDD12.IAC, the YYMMDD are straightforward (ex. 110807 for august 7th, 2011), the "00" or "12" at the end are related to the model run, 0000 hour or 1200 hour, depending on the time of the day you ask for the file, either one may be available; when you receive it DO CHECK the actual issue time, during holidays or "samba" days bulletins may be 12-24 or more hours old :sad:

to get the file, two options:
1.with email capability (iridium or SSB mail), send a message to query@saildocs.com with

send http://www.mar.mil.br/dhn/chm/meteo/prev/iac/PYYMMDD00.iac

as message body (replace the final 00 with 12 if suitable), then reconnect and you'll get the answer with the file. The original size is around 8-9kb, with saildocs it is compressed to "3-4kb

2. without email capability, the file can be received through a normal HF receiver, but personally I have never succeded, they indicate J2D as transmissione mode but the few times I listened I could not grasp anything. FWIW Freq. are 4.266, 6.448, 8.580, 12.709 and 16.974 MHz



This is an example of what you may receive from saildocs

Message ID: 69X3V5X6IGX3
Date: 2011/08/06 19:22
From: query-reply@saildocs.com
To: M0ITA
Source: SMTP
Subject: http://www.mar.mil.br/dhn/chm/meteo/prev/iac/P11080600.iac

URL: http://www.mar.mil.br/dhn/chm/meteo/prev/iac/P11080600.iac
Date: 06 Aug 2011 19:04:40 -0000
Last-Modified: 06 Aug 2011 03:42:39 -0000

METEOROMARINHA REFERENTE A ANALISE DE 0000 HMG - 06/AGO/2011
DATA E HORA REFERENCIADA AO MERIDIANO DE GREENWICH - HMG
PRESSAO EM HECTOPASCAL - HPA
VENTO NA ESCALA BEAUFORT
ONDAS EM METROS
PARTE UM - AVISOS DE MAU TEMPO
AVISO NR 527/2011
AVISO DE MAR GROSSO/MUITO GROSSO
EMITIDO AS 1530 - QUI - 04/AGO/2011
AREA SUL OCEANICA AO SUL DE 26S. ONDAS DE NW/SW 3.0/6.0.
VALIDO ATE 060600.
ESTE AVISO SUBSTITUI OS AVISOS NR 524/2011.
AVISO NR 529/2011
AVISO DE VENTO FORTE/MUITO FORTE
EMITIDO AS 1330 - SEX - 05/AGO/2011
AREA SUL OCEANICA AO SUL DE 30S E LESTE DE 035W A PARTIR DE 070000.
VENTO NW/SW FORCA 7/8 COM RAJADAS.
VALIDO ATE 081200.
PARTE DOIS - ANALISE DO TEMPO EM 060000
ALTA 1026 EM 25S037W.
ZCIT EM 11N020W, 13N030W, 15N040W E 12N050W COM FAIXA DE 3/4 GRAUS
DE LARGURA COM PANCADAS DE CHUVA LEVE/MODERADA OCASIONALMENTE
FORTE EM 050W E TROVOADAS ISOLADAS EM TODA A FAIXA.
PARTE TRES - PREVISAO DO TEMPO VALIDA DE 061200 ATE 071200
AREA ALFA (DO ARROIO CHUI ATE CABO DE SANTA MARTA)
VENTO NW/SW 4/5 COM RAJADAS OCASIONAIS RONDANDO PARA SE/NE 3/4.
ONDAS DE SW/SE 1.5/2.5 PASSANDO SE 1.0/2.0. VISIBILIDADE BOA.
AREA BRAVO/CHARLIE
AREA BRAVO (DE CABO DE SANTA MARTA ATE CABO FRIO - OCEANICA)
VENTO NE/NW RONDANDO PARA SE/NE NO SUL DA AREA 4/5 COM RAJADAS
PASSANDO 3/4. ONDAS DE SW/SE 1.5/2.5 PASSANDO 1.0/2.0. VISIBILIDADE
BOA.
AREA CHARLIE (DE CABO DE SANTA MARTA ATE CABO FRIO - COSTEIRA)
VENTO NE/NW RONDANDO PARA SW/SE 3/4 COM RAJADAS OCASIONAIS.
ONDAS DE S/SE 1.0/2.0. VISIBILIDADE BOA.
AREA DELTA (DE CABO FRIO ATE CARAVELAS)
VENTO SE/NE 3/4, OCASIONALMENTE 5 COM RAJADAS. ONDAS DE SW/SE
1.0/2.0. VISIBILIDADE BOA.
AREA ECHO (DE CARAVELAS ATE SALVADOR)
PANCADAS ISOLADAS JUNTO A COSTA. VENTO SE/E 3/4 JUNTO A COSTA E
4/5 COM RAJADAS NO RESTANTE DA AREA. ONDAS DE SW/SE 1.5/2.5.
VISIBILIDADE BOA, OCASIONALMENTE MODERADA DURANTE AS PANCADAS.
AREA FOXTROT (DE SALVADOR ATE NATAL)
VENTO SE/E 4/5, OCASIONALMENTE 6 COM RAJADAS. ONDAS DE SE/E
1.0/2.0. VISIBILIDADE BOA.
AREA GOLF (DE NATAL ATE SAO LUIS)
PANCADAS ISOLADAS. VENTO SE/NE 4/5, OCASIONALMENTE 6 COM RAJADAS.
ONDAS DE SE/E 1.0/2.0. VISIBILIDADE BOA.
AREA HOTEL (DE SAO LUIS ATE CABO ORANGE)
PANCADAS ISOLADAS NO NORTE DA AREA. VENTO SE/NE 4/5 COM RAJADAS.
ONDAS DE SE/E 0.5/1.5. VISIBILIDADE BOA OCASIONALMENTE MODERADA
DURANTE AS PANCADAS.
AREA SUL OCEANICA
SUL DE 30S
OESTE DE 030W
CHUVISCOS NO SUL DA AREA. VENTO NW/SW 3/4 PASSANDO 5/6 COM
RAJADAS. ONDAS DE W/SW 2.0/3.0 PASSANDO 1.5/2.5. VISIBILIDADE BOA,
OCASIONALMENTE MODERADA DURANTE OS CHUVISCOS.
LESTE DE 030W
PANCADAS NO SUDOESTE DA AREA. VENTO SW/SE 2/3 RONDANDO PARA
NW/W 6/7. ONDAS DE W/SW 2.0/3.0. VISIBILIDADE BOA, REDUZINDO PARA
MODERADA DURANTE AS PANCADAS.
NORTE DE 30S
VENTO SW/SE RONDANDO PARA NW/SW 3/4 AO SUL DE 25S E SE/NE 3/4,
OCASIONALMENTE 5 NO RESTANTE DA AREA. ONDAS DE SW/S 1.5/2.5.
VISIBILIDADE BOA.
AREA NORTE OCEANICA
PANCADAS ISOLADAS AO NORTE DE 05N. VENTO SE/E 4/5, OCASIONALMENTE
6 COM RAJADAS AO SUL DO EQUADOR E SW/SE 3/4 AO NORTE DO EQUADOR.
ONDAS DE SE 1.0/2.0. VISIBILIDADE BOA REDUZINDO PARA MODERADA
DURANTE AS PANCADAS.

PARTE QUATRO
10001 33388 00600
99900
81000 54975
81000 54556
81010 52667
81010 50951
81006 00682
85024 52482
85026 52637
99911
66600 55075 55172 55070
66400 55070 54869 54471
66200 55070 55268
66400 53012 52914
66700 01748 01449 01150
66700 01928 01630 01331
99922
44968 55912 55813 55612
44972 55914 55715 55512
44976 55916 55717 55515 55412
44980 55919 55720 55518 55315 55312
44984 55922 55722 55420 55215 55112
44988 55925 55523 55220 55015 55012
44992 55928 55628 55225 55020 54812
44996 55931 55431 55127 54721 54715 54712
44000 55934 55534 55233 55030 54725 54620 54612
44004 55175 54976 54775 54872 55172 55175
44004 55937 55437 55035 54730 54525 54420 54515 54412
44004 54956 55063 54765 54361 54455 54450 54647 54950 54956
44008 55264 55167 55271 55275 55178 54880 54575 54670 54768 54365
54160 54255 54350 54345 54639 54943 55151 55158 55264
44008 55940 55239 54835 54530 54320 54315 54112
44008 01182 00975 00573 00275 00182
44012 55282 55475 55368 55465 55360 55253 55245 55343 55644 55943
44012 54582 53980 54275 54370 54269 53968 53865 53958 54150 54242
54536 54431 54225 54115 53812
44012 53168 52570 52265 52463 52665 52966 53168
44012 51250 50954 50752 50849 51048 51250
44012 01682 01475 01171 00372 50275 50379 50282
44016 55682 55775 55565 55455 55549 55747 55947
44016 53482 53875 53570 53369 52772 52271 51969 51568 51271
51475 51678 51582
44016 50412 50520 50625 50533 50337 50439 50638 50940 51445 51746
51650 51753 52055 52553 52855 53158 53455 53853 53945 54235
54130 53919 53515 53212
44020 55957 55754 55760 55768 55873 55882
44020 51012 51125 51229 50933 51237 51238 51543 51944 52144 52448
52651 53049 53548 53641 53835 53525 52917 52715 52912
44020 51982 51975 52274 52575 53074 53471 53574 53278 52982
44020 02020 01522 01425 01629 01736 01642 01950 01955 02059
44024 51412 51524 51929 51735 51641 52043 52243 52445 53143 53238
53333 52928 52425 52420 52515 52712
99955
55050 01120 01330 01540 01250
19191

PARTE CINCO
BBXX 06004
2AKI2 06003 99044 70299 41698 31712 10269 20227 40171 22271
V2OH6 06003 99060 70254 41/97 /3314 10250 40160 79296 8//// 22254
PDWZ 06003 99074 50344 41698 31317 10268 20217 40185 22283
DMQN 06003 99088 70280 41/97 82607 10271 20247 40170 758// 8//// 22244
A8OF8 06004 99100 50338 41498 51318 10260 20225 40225 22244
LADQ4 06004 99127 50345 41699 31016 10250 2022/ 40205 22253
DFKP2 06004 99267 50305 41/98 31913 10185 20127 40240 22265

PARTE SEIS
AAXX 06004
82143 31196 60311 10270 20243 40140
82595 31/97 /1618 10260 20188 40174
83117 31398 10801 10190 20159 40124
83499 31/97*/2020*10230*20201*40262
83599 31995 30609 10170 20138 40220
83700 32995*03403*10160*20144*40245
83759 32597 30505 10165 20115 40248
83825 32996 23301 10160 20144 40237
83925 32/94 /0528 10140 20105 40170
83970 41/97*/0506*10120*20084*40189
83998 42/97 /0103 10090 20050 40162

BT

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You get the whole text bulletin, then PARTE QUATRO is the coded chart

(internet here getting very patchy right now, we are flying to europe in the next two days so I promise I'll continue when home :smile: )

rgds rr