In reply to peebles boy:
> So, for tomo and the next couple days:
>
> MWIS Freezing level - staying about 900m
> MetOffice Freezing Level - staying about 500m
>
> MWIS Windspeeds - light
> MetOffice Windspeeds - gales
>
> MWIS Cloud cover - lots of cloud
> MetOffice Cloud cover - not a lot of cloud
>
> How can the forecasts be so radically different when (from what I've read on here anyway) they all use the same data???
>
> Either way, I'm off up the Ben tomo...hoping for a combination of both forecasts and looking forward to low freezing levels, light winds and high cloud base!!
They don't use the same data. Metoffice use their own computer model to base their forecasts on.
MWIS have access to a wider variety of data and computer models from a variety of sources - plus the guys doing the forecasting have a lot of first hand personal knowledge of the hills involved.
At the end of the day though they are all forecasts. The closer forecasts match the more likely they are to accurate.