NOUS41 KWBC 261150
Public Information Statement PNS17-26
National Weather Service Headquarters Washington DC
750 AM EDT Mon Jun 26 2017
-NOAA Weather Wire Service
-Emergency Managers Weather Information Network
Other NWS Partners and NWS Employees
FROM: Darin Figurskey
Operations Branch Chief, Ocean Prediction Center
SUBJECT: Soliciting comments on proposed changes to 500mb
forecasts and terminating production of a small suite
of products through July 31, 2017
The NWS National Centers for Environmental Prediction's (NCEP)
Ocean Prediction Center (OPC) is soliciting comments on proposed
changes to the 500mb forecasts through Monday, July 31, 2017.
OPC plans to automate the 500mb forecasts and disseminate via
radiofax and internet forecasts produced directly by the Global
Forecast System (GFS) model. The 500mb forecasts will also no
longer contain indications of vorticity maxima via trough lines.
Currently, forecasters perform little manual intervention to
numerical weather prediction output on the 500mb forecasts with
the exception of adding vorticity maxima.
Users will now receive 500mb forecasts via the internet on an
hourly basis out to 384 hours, or 16 days, at:
These forecasts will be linked from the OPC internet page, along
with highlighting 500mb forecasts at select hours, at:
Currently, 500mb forecasts are only available to 48 hours.
Also, the change will not affect the radiofax schedule of
forecast information. The radiofax schedule can be found at:
In addition, the OPC proposes to terminate the production of
internet-only products known as "black gif" images. These images
are only available via the internet. Continuing to maintain
these "black gif" images limits OPC's ability to make
improvements to other operational products.
The web URLs that are planned to be discontinued are:
The information can already be found in a different format in
radiofax charts issued by the OPC as well as on the OPC web page at:
Please send comments and requests for more information through
Monday, July 31, 2017, to:
OPC Operations Branch Chief
National Service Change Notices are online at: