diff --git a/physics/GFS_time_vary_pre.fv3.F90 b/physics/GFS_time_vary_pre.fv3.F90
index 4fecabad5..de33b5404 100644
--- a/physics/GFS_time_vary_pre.fv3.F90
+++ b/physics/GFS_time_vary_pre.fv3.F90
@@ -119,6 +119,9 @@ subroutine GFS_time_vary_pre_run (Model, errmsg, errflg)
         !--- radiation triggers
         Model%lsswr  = (mod(Model%kdt, Model%nsswr) == 1)
         Model%lslwr  = (mod(Model%kdt, Model%nslwr) == 1)
+        !--- allow for radiation to be called on every physics time step, if needed
+        if (Model%nsswr == 1)  Model%lsswr = .true.
+        if (Model%nslwr == 1)  Model%lslwr = .true.
 
         !--- set the solar hour based on a combination of phour and time initial hour
         Model%solhr  = mod(Model%phour+Model%idate(1),con_24)
diff --git a/physics/GFS_time_vary_pre.scm.F90 b/physics/GFS_time_vary_pre.scm.F90
index bb246cd32..c2151151d 100644
--- a/physics/GFS_time_vary_pre.scm.F90
+++ b/physics/GFS_time_vary_pre.scm.F90
@@ -119,6 +119,9 @@ subroutine GFS_time_vary_pre_run (Model, errmsg, errflg)
         !--- radiation triggers
         Model%lsswr  = (mod(Model%kdt, Model%nsswr) == 1)
         Model%lslwr  = (mod(Model%kdt, Model%nslwr) == 1)
+        !--- allow for radiation to be called on every physics time step, if needed
+        if (Model%nsswr == 1)  Model%lsswr = .true.
+        if (Model%nslwr == 1)  Model%lslwr = .true.
 
         !--- set the solar hour based on a combination of phour and time initial hour
         Model%solhr  = mod(Model%phour+Model%idate(1),con_24)