If you take any notice of the charts on the BBC weather web site for BHX, you could get off lightly, as between 11.00 and 14.00, the wind is shown as westerly at 22-24 kts. Other airports have wind speeds at 50-70 kts. incl EMA and MAN, so if that proves correct, you could be in for some diversions. It does get up mid-afrernoon to 40+ kts at BHX.