Hourly forecast quite different from 3-hourly
The 3-hourly forecast is quite a bit colder and more rainy than the hourly forecast (see below).
I'm not sure how the two forecasts are produced, but they look different on every day.
It seems fine for all other models apart from ECMWF. The screenshot below is for London, but it looks wrong for other places as well.
Let me know if you need anything else.
Problem: 3 hour and 1 hour forecast quite different.
Location: All locations
When: Always (tried on multiple days)
Where: Website and app
Could be explained like that
There is absolutely no rain at all displayed in the 3-hour forecast. For that to work every rain displayed in the forecast has to be less than 0.3mm, so that it's hourly less than 0.1mm.
But almost all values are more than 0.3mm and some even 1.8mm, 1.9mm, 2.5mm. Not sure how this would work?
Also the temperature look off as well. Where does the 12C on Thursday 13:00 come from if every temperature in other forecast for the 3 hours before and after is 16C?
The gusts are at 5bft for Thu for 7 hours as well, which is 3bft in the other forecast.
Are you sure that both Meteograms are from same update?
In addition it would be useful that you say where you observe them to allow checking.
You are right. I’ve checked on London (sorry I missed it). The 1h/3h rain forecast is not consistent especially on next Thursday.
There is probably something wrong. I’ve never seen such discrepancy before.
FWIW the two forecasts align currently. Not sure if something has been fixed or if this is a transient bug.