This release merges upstream NCEP NAWIPS 7.15.0, whose CHANGELOG includes:

• Bug fixes and other issue resolutions.
• Cumulative revisions to NAWIPS data tables to support maps/bounds,
  surface stations, tropical, and other routine periodic updates.
• Integration of compiler, and certain changes required to support the
  WCOSS supercomputer and RHEL 8 Operating System transition projects.
• Updates to Volcanic Ash Advisory user interface to support the NESDIS
  Satellite Analysis Branch.

This release also includes the following GEMPAK Community changes:

• More dynamic setting of NAWIPS environment variable on bash (#85).
• Update MRMS Grib Tables to v12.1 (#89).
• Continued cleanup of bad previous merges that overwrote Unidata
  local table modifications.