Monday, 25 October 2010

BBC Weather, part 2

Without meaning to sound like a weather bore, the bug with the BBC online weather system that I noticed last week occured again this morning. Last night the forecast for today was bright sunshine; a few minutes ago it showed heavy rain:

 Drilling down, the summary forecast for today was heavy rain:

Yet the detail shows bright sunshine, as expected from last night's forecast.

I sent in a complaint about this last week to the BBC, and have yet to receive a response. I can fully understand why weather forecasts may be inaccurate - predicting the future is an enormously complex task in a system as complex as weather. However, there is no reason for it to be internally inconsistent in this manner.

How many people are getting confused and altering plans because they are reading the summary and seeing rain is forecast, when in reality sunshine is expected?

I set my location to Glasgow, and the same problem occurs - the summary forecasts heavy rain, whilst the details forcasts sunshine.

York was more interesting. Tomorrow's weather for York shows 'sunny intervals with light rain forecast for 10.00', yet the detail shows cloud and light rain all day, with no sun. This shows that the problem is far more complex than just displaying heavy rain for forecast sunny days.

Something in the summary->detail translation is seriously mucked up. It makes me wonder what sort of system they use to generate the summary weather from the detail. The problem seems to happen in the early hours of the morning (I have ye to see it in the evening), so it could be a problem with the way they update the forecast.

1 comment:

Alan Sloman said...

Hi David

How odd. I have noticed this glitch in the past as well - I get the forecast from the BBC site and it is not an uncommon occurrence.
It would be good to get to the bottom of this.