Dear all

We, RegCM users here are running the model(RegCM-4.1) for different purposes. The model runs properly but it stops at a specific time(different time for different users) and gives the following error message

                 WHUUUUBBBASAAAGASDDWD!!!!!!!!!!!!!!!!
                 No more atmosphere here....
                 CFL violation detected, so model STOP
                #####################################
                #            DECREASE DT !!!!       #
                #####################################
                 -------------- FATAL CALLED ---------------
                Fatal in file: mod_tendency.F90 at line:   2291
                CFL VIOLATION

We furter tried by decreasing dt but still gives the same error message when it reaches the same date it stop in the first run.

Can you figure out a way out?

thanks