From: Captain Birdseye
Date: 11 Apr 09 - 06:41 AM

one other useful tip,is buys ballot rule,if you stand with your back to the wind in the northern hemisphere,the bad weather will be on your left hand side,in the southern hemisphere the reverse holds true.

More accurately -- if you stand with your back to the wind, the low pressure will be on your left ( N. hemis. ). The winds rotate anticlockwise around the low pressure and carry weather fronts with them, so any bad weather that's coming to you will come from the direction the wind is blowing at the time it arrives (ish).