UKH

Due to some error with the Met office, it no longer gives me the more detailed forecasts so I have been looking at XC weather a bit instead. 

It has arrows for the wind showing direction. These are normally blue, but sometimes red. My first assumption was that the red would be gusts over a certain speed, but it doesn't seem to be the case. I can't work out a pattern. Any ideas?

In reply to girlymonkey:

https://xcweather.co.uk/Info/FAQ#faq14

Seems to relate more to the map than the forecast tables, but might be it?

"Why are some arrows red?
Red arrows show that the wind is gusting. The wind is said to be gusting if the maximum speed is 10 knots or more above the current average speed. The size of each arrow on the map is always based on the average wind speed."

In reply to Longsufferingropeholder:

Ah, that makes sense. I was looking at the actual top speed of the gust but hadn't looked to see the difference between speeds. 

Thanks!

In reply to girlymonkey:

If you're just experimenting with alternative sources of info, wind especially, it might be worth having a look at Wind Guru as well: https://www.windguru.cz