Here is what is on the main “forecast” page of the App and web page.
Also note the Tempest icon to get what you are after. If you want to choose what screen is the default when you open the app then vote for this feature request: Specify Default Display in Tempest App.
To make the web show this card page instead of the current “forecast” page just go to the card page and book mark that or, for your station, go to https://tempestwx.com/station/24397/grid and it will take you there directly.