It seems to me like they are testing a change in the format of Day Planer.
At the start of the show instead of doing a preview with b-roll video and then showing the two OCM's,
they went right to Heather who gave a rundown for the show. After that she went right to Carl Parker for a Tropical Storm update.
Next Heather tossed to Todd Santos her co OCM today who did the Weather Headlines.
As you mentioned there was that hour by hour forecast in the first segment.
In the 3rd segment they did not do the 7 Day Forecast, that was moved to around 35min after.
The start of the second half hour had the same format as the start of the show.