http://www.nws.noaa.gov/mdl/survey/pgb_survey/dev/rest.php#degrib
Haven't seen any documentation about possible limit to the number of queries daily. Anybody know?
There is not an explicit limit, however they are pretty clear about recommendations when dealing with potentially high volumes, mission critical usage, etc.
http://www.nws.noaa.gov/mdl/XML/Design/WebServicesUseGuildlines.php