Experimental NAM and GFS Banding Diagnostics

Note: The NAM output is hourly through 36hr and then 3-hourly thereafter.
Note2: The new GFS fields use spherepak routines for the geostrophic wind and will have far less topographic contamination compared to the NAM.

Please note that these products are experimental and not official forecasts.
For official forecasts in the U.S., please refer to the National Weather Service and National Hurricane Center.


Saturated, Symmetrically Unstable Depth:
[NAM: 00z | 06z | 12z | 18z ]
[GFS: 00z | 06z | 12z | 18z ]

900-500mb Vertically averaged frontogenesis:
[NAM: 00z | 06z | 12z | 18z ]
[GFS: 00z | 06z | 12z | 18z ]

800-600mb Vertically averaged frontogenesis:
[NAM: 00z | 06z | 12z | 18z ]
[GFS: 00z | 06z | 12z | 18z ]

Archive of recent images.


Bob Hart, FSU
David Novak, WPC
Walt Drag, NWS PHI
Rich Grumm, NWS CTP

Last Updated: 18 January 2016