Real Environment Xtreme Announcement | REX Weather Force Weather Engine

I just bought it and did first flight from Dallas to Denver… I had it on Rex’s live weather injection – the weather seemed correct, except my winds stayed at 3 knots the entire climb to 30,000 feet. Hmmm…

Make sure when you set the preset in MSFS to clear, that you also delete the wind layer. That should solve the issue with the wind.

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I’m currently in a TBM over Wyoming, at 30,000 ft, looking at what the jet stream is doing, and I’ve certainly been ‘bounced around’. Though I’m not sure why the wind direction would make any difference. You’re flying through the air mass around you, and your motion relative to the ground doesn’t cause turbulence.

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The sim itself does not have the capability to create low visibility when creating a custom weather scenario, so I doubt that any external weather program could do so.

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OK, so far not impressed - especially with how it transitions weather, depending if you have a 5 min or 10 min cycle. Very unrealistic.

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Lets see some evidence? We know Asobo weather isn’t working. So let’s see REX weather in a video?

I want real world winds aloft. Real world runway winds and QNH. Real world precipitation. If it’s all just a theme, we have that already! Come on Asobo, are you all asleep, or trying to fix the bugs from 1.8.3?

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Is it possible it would use MSFS model for the gaps between stations? I just flew from a METAR’d field to a non-METAR’d field (But picking up between two different stations) and I went from clear to completely covered in rain and clouds to instantly broken clouds with no transition. I was hoping this would be different and actually have proper transitions, but unless I’m (quite possibly) doing something wrong, it doesn’t seem so. I have weather updates to every 5 minutes to 30ms transitions now. I think before I had default of 10 and 1ms which might have been the issue. We’ll see…

I don’t believe using REX you will see transitions in weather like you get with the default MSFS weather. It’s just a limitation of the product. I went from being in between two cloud layers to immediate blue sky above me after an update in conditions, and that was while using their “transition setting” and not the instant download/change.

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Yeah… the lack of knowledge about how the game works is one of the most frustrating things so far. I think quite a few people here feel that Asobo’s communication has been great thanks to their little Q&A vids and the couple of posts. But if you really read the material - it doesn’t say much at all unfortunately.

This hits weather especially hard because it is the one thing that the most people want to work.

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very very strange, game don’t have normal broken and cirrus, all cumulus create from popcorn or flat popcorn, close to cloud is pixelated and fragmentated, and with all that, guys, who did best clouds and other cosmetic addons, drop weather first, what they did generation after generation after generation and that never was very best, where opus and active sky was for that… any way, i expect from them other stuff

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Just bought it, anyone seen cirrus clouds etc or is that an inherent limitation of game engine?

So far this sounds more like a cash grab for those striving for more real weather… Really hoping next few patches adds VR and sorts this weather once and for all…

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Perhaps, but it is only 21 usd, and I had good use of REX with x-plane a decade ago. Also, looking at the rate and effectiveness of Asobo… you might be waiting for a long time.

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They are apparently using NCEP GFS model data for upper winds and temperatures. I don’t know at what altitude the surface winds transition to the model winds.

The problem is that the main weather is simply the NOAA METAR report from the nearest airport set globally, so if the airport METAR is reporting an overcast at 2000 feet, the weather throughout the entire world will be overcast - until the aircraft flies in range of the next METAR reporting station, at which time the global clouds will change to whatever that METAR is reporting.

This is a reversion to 2006 FSX weather technology. There is no way in the current REX software to have (for example) a thunderstorm squall line extending from Detroit down to central Indiana, while skies further east are clear. If you are flying toward the storm system heading west, the weather will be clear everywhere, until getting within range of a METAR station reporting stormy conditions, at which time, the weather everywhere will suddenly change to stormy.

Rex does not need the SDK to do this, because they are directly manipulating the environmental variables in the running sim process in memory. Active Sky does the same thing to set the wind, temperature and pressure at the aircraft, but the other things that Active Sky does, which is to place specific clouds, in specific locations, can only be done using SDK weather functions that do yet exist in the MSFS SDK as it is currently implemented.

Yes, Rex can inject the exact wind, temperature and pressure at a specific airport being reported in the latest METAR, but doing it by setting that METAR globally has many serious drawbacks.

Using METAR to set clouds is not optimal either, because METAR reports will typically not contain any data for clouds above 12,000 feet. There might be a solid overcast at 15,000 feet over an airport, but if so, the METAR would report “CLR”, so the in-game global weather based on that METAR would have no clouds at all.

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I’ve had a love-hate relationship with REX for years. Their marketing rarely lives up to reality, but they do produce decent stuff for the price. I’m noticing that Weather Force is no exception.

Lots of generic weather as far as the eye can see. It seems as though they display weather for the closest METAR but keep it as far as the eye can see- so if it’s cloudy where you’re at, it stays cloudy everywhere. If there is a storm on the radar, it will show a grid of storms as far as the scope will allow. So, we don’t get localized variations like we do in MSFS default? If so, then MSFS models weather better and offers greater variation.

I need to experiment with this some more, but for now, my initial enthusiasm is waning…Stay tuned.

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Oh dear is that so? So say weather radar on 320nm range in A320NX would be useless outside immediate metar range?

1k0zr8

We appreciate your sacrifice for the greater good :slight_smile:

But they should hurry up then.

Its stupid and frustrating to plan VFR flights because their current meteo forecast is off by who knows how many hours.

So you plan your flight, all seems good by current VMC just to realize that your departure airport is under LIFR conditions after you load the sim.

Not good.

Wind, temperature and pressure injection into the simulator does not require the SDK. It can be done by directly manipulating the sims’s atmospheric environmental variables in memory. It’s a hack, but it does work.

But, placing specific clouds in specific locations absolutely does require SDK functions that do not yet exist, and I’m sure that is what HiFi is waiting for.

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Another excellent and detailed post sir.

Yeah, that’s terrible if only the local METAR is projecting on everything between it and the next METAR (minus the wind portion of the GFS model). If it was the entire GFS model, that doesn’t seem so bad.

EDIT: Not only does it not seem that bad, that would probably be the best case scenario. In a flight simulator, we are really only concerned about the weather now, out to the time of the next model run. The model that should win out is then logically the fastest refreshing and highest resolution global model, which is GFS.

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