Not every cloud has a silver lining. Despite all the snow and rain that fell from the sky during the March 14 nor’easter and steady improvements in reservoir storage levels during the past few months, 14 counties in New Jersey remain under a drought warning and four others are under a drought watch. And don’t expect those warnings and watches to be lifted anytime soon, according to state environmental officials. Although some aspects of the drought situation have gotten better in recent weeks, other key indicators are not faring so well. Among the troubling factors, according to Larry Hajna, a spokesman for the state Department of Environmental Protection: New Jersey did not get as much snow and rain as it needed during the winter season. As a result, most regions of the state are currently rated as moderately dry, and the northern coastal region — Monmouth County and northern Ocean County — is classified as severely dry. Stream flows in the state’s northeastern and southern coastal regions have been extremely dry during the past 90 days. Shallow groundwater is rated as extremely dry in the state’s southwestern region, the area along the…