Why is weather so hard to predict accurately?
People rely on forecasts for everything from safely landing an
aircraft to running an outdoor event, but it's actually very hard
for weather forecasters to be 100 per cent accurate about what the
weather is going to do. Why?
Think about the weather where you live:
- For how long does the weather stay the same?
- If you go to a place, or phone a friend, 5 miles from your
house is the weather the same there as at your home?
- Watch the clouds on a windy day - do they all move in the same
- Why do you think weather is so variable?
Weather can change rapidly and often, so meteorologists speak
about the chance of rain or sunshine in terms of percentages. They
can never be absolutely sure of future weather events.
The accuracy of the measuring instruments and frequency of data
gathering defines how accurate a forecast will be. Go to Where
do weather forecasts come from? to find out how meteorologists
measure the weather.