During departure operations on the primary runways, EWR tower must provide additional spacing between consecutive departures because of noise abatement procedures.
During periods of inclement weather or strong gusty winds, EWR operations can be severely impacted, if TEB's runway configuration is not compatible with EWR's runway configuration.
When EWR is departing RWY 22R and LGA conducting either RWY 4 or RWY 31 approaches, the complexity increases dramatically for the EWR Departure Controller.
When EWR is arriving on the 4's, ZDC's RBV flow is on an extended RWY 4 final, and compaction is a problem. If ZDC does not provide the MIT that N90 requires, ZDC will usually end up holding.
EWR RWY 11 operations significantly increase the workload of the N90 satellite position.