Samantha mentioned in a FB post in August that she will no longer be a regular OCM on TV and would be doing taped segments.
Apparently she is doing video forecasts for Weather.com.
Checking Weather Center Live tonight it's Chris Warren and Crystal Egger doing the forecasts.
Paul and Kelly are doing weather news segments and Kim is doing the social segment.
It seems the regular schedule for Weather Center Live is to use 4 to 5 OCMs.
Between shows I would guess Paul, Kelly and Kim are doing the weather updates.