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Weather METAR Strings

M

MartinLoga

Messages
34
Country
switzerland
Hi,

I'm currently trying to get some grip on changing the weather. Most of it works just fine but somehow I can not make it rain or snow.

So here for example is a metar string that according to this page http://heras-gilsanz.com/manuel/METAR-Decoder.html should contain snow.
GLOB 010000Z 12002KT 2000 SN NSC098 BKN262 m10/00 Q0994

and this one should generate rain
GLOB 010000Z 12002KT 3000 RA NSC098 BKN262 10/10 Q0994

and this one is not from me but it does generate rain
GLOB 010000Z 18005KT 4000 -RA BR BKN015 BKN060 23/23 Q1013

What do I wrong?

I set up with SimConnect_WeatherSetModeGlobal(m_SimConnect); and SimConnect_WeatherSetObservation(m_SimConnect, 0, metar.str().c_str());
 
You will notice if you put your METAR in the decoder it is missing a part of the cloud cover at 9800. Don't think NSC098 is correct - no N - should be SCT098 - Scattered 9800 feet AGL and m10 may need to be M10 for minus 10.

Maybe FSX does not like any error in the METAR.

try:

GLOB 010000Z 12002KT 2000 SN SCT098 BKN262 M10/00 Q0994

and

GLOB 010000Z 12002KT 3000 RA SCT098 BKN262 10/10 Q0994
 
Ok so according to METAR Spec the denominator of the phenomenon can be either minus, nothing or plus. Nothing means average.

I fixed the lower case letters but no change.

Hmm ok I just generated the first time working rain with
GLOB 010000Z 00000KT 9999 -RA SCT065 BKN164 OVC262 10/10 Q0994

Ah and finally I got why you where saying that NSC was incorrect. So as long as there are no visible clouds there will be no rain. That actually makes a lot of sense now.

Thanks
 
Last edited:
Are you saying that RA did not work, but -RA did? That is interesting. Did not think the weather engine was that "smart" to sort these things out. I am looking into something to inject METARS in P3D.
 
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