Leak: Shutdown will shrink GDP by 0.1% every week

The estimate was not intended to become public. It was just leaked.
Their previous estimate was 0.1% every two weeks.

"The Trump administration now estimates that the cost of the government shutdown will be twice as steep as originally forecast.
The original estimate that the partial shutdown would subtract 0.1 percentage point from growth every two weeks has now been doubled to a 0.1 percentage point subtraction every week, according to an official who asked not to be named."

‪ https://www.cnbc.com/2019/01/15/source-white-house-believes-shutdown-will-be-twice-as-costly.html‬