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How can weather radar data be distinguished as observed or forecast datasets?

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How can weather radar data be distinguished as observed or forecast datasets。
It is currently 23:25. I am viewing weather radar data for 23:25. How can I tell whether this radar data is observed or forecast data?

Ventusky
Moderator
Ventusky

User 1231129570
There is a white line on the timeline (shown as a dot in the app). Everything to the right of it is measured data, while everything to the left is forecast data.

Czechia

Ventusky
The current time is 9:01, and the white vertical line on the timeline stays at 9:00. Theoretically, the measured data will have a lag delay, so why is there measured data for 9:00 at 9:01?

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