Minus wind speed?

[Kernow]

Hi, I am currently flying between Greenland and Canada. I must say that in the couple of trials using your program with REX4 textures I am very very happy with it's integration with FSX and in my opinion out performs REX's existing weather engine in their 'Overdrive' program which I used to use.
However today I am flying between Keflavik and New York at FL360 and a slight headwind 30kts when the weather starts to go crazy and the wind speed turns into an increasing minus figure up to a maximum of -34okts! I was surprised my 757 stayed in the air!
Has anyone else experienced anything similar or is this just a FSX hiccup?
Kind Regards,

[fsxwx]

Hi,
unfortunately, FSXWX is not yet really capable of providing weather for long overseas-flights. I suppose that's the reason for your wind abnormality.
However, the coverage above oceans is something I will definitely implement in the future.

[fsxwx]

Just for information: Crazy winds in upper levels above oceans and unpopulated areas should be resolved completely with the GFS data integration (version 1.4.0 upwards).