Mike,
Good question!
Any AWOS installed these days is non-Federal, so it is funded privately
either by the owner of an airport, a private company (such a hospital
for their heliport), or the state. There are additional costs involved
(1000s of dollars a year I believe) to establish longline communications
to WSMCR and add these site to NADIN (National Airspace Data
Interchange Network). This allows the site's METARs to be transmitted to
NOAAPort, AIDAP (FAA line primarily for NOTAMs), and other aviation
communication services.
It is up to the owner of the AWOS to fund NADIN hook-up, and AWOS
vendors always try to sell this service. Some AWOS upon commissiong
immediately have NADIN service paid for (KW40 was a recent example)
so their METARs show up right away. Over the last 20 years or so,
I have noticed more and more AWOS have been getting NADIN service,
whether it be brand new sites, or sites that have been installed for years.
Currently, I know of about 240 AWOS unit installed in the U.S., but do not
have NADIN service yet. There are likely several dozen more at least I do
not
know of at any one time. The 240 number used to be a lot higher (~500)
years ago.
As to when new sites show up? There is no centralized site or agency
that tracks this that I know of. It is just a matter of scanning METAR
collectives and flagging the new sites with a program.
Additions to NADIN are usually on a Tue or Thu, often in the 28 and 56
day FAA database update cycle, but I have seen additions every day of
the week.
For international new METAR sites, often I see additions on the 1st of
the month and that is seperate from the NADIN process, and more tied
to what is distributed on GTS and what a country chooses to add. There
are many, many more METAR, and TAF and SYNOP sites for that matter,
that exist all over the world that we do not see on NOAAPort for any
number of reasons, but with time, more and more have been added. esp.
SYNOP sites.
Boris
On Mon, Nov 21, 2022 at 1:19 PM Michael Graf - NOAA Federal <
michael.graf@xxxxxxxx> wrote:
> Afternoon Boris...what's this mean? "just do not
> have NADIN service at this time."
>
> Thanks,
> Mike
>
> On Mon, Nov 21, 2022 at 1:00 PM Boris A. Konon <trwplusa@xxxxxxxxx> wrote:
>
>> Some of these already have AWOS units installed, but just do not
>> have NADIN service at this time.
>>
>>
>>
>>
>> *KASG KBAK KBCT KBYH KCHD KCNW KDPG KEFD KEMT KEVBKGEU KGYR KHSA KOMN
>> KOQU KPAO KPOC KRHV KSCH KSWFKTIX KTOA KWHP PADG PAGB PAKU PALJ PALP PAPR
>> PAPTPGRO PGWT PHHN PHJH PHMU PKMR PTSA PTTP TJBQ TJIG*
>>
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>
>
> --
> Michael L. Graf
> Meteorologist/International Liaison
>
> National Weather Service
> SSMC-2 Station 13314
> 1325 East West Highway
> Silver Spring MD 20910
>
> work 301-427-9109
> fax 301-713-1520
> cell 304-268-0691
>
>
