[Ncep.list.idp-gis-status] IDP GIS Web Services Informational Message

[Kari Sheets - NOAA Federal]

SUBJECT:   The NWS National Centers for Environmental Prediction (NCEP) is
seeking public comments through December 18, 2020, on the management of
user access of the NCEP hosted Web Services including NOAA's IDP GIS suite
accessible from https://www.weather.gov/gis/. In addition, NCEP is holding
a virtual public forum to discuss mitigation options on December 8, 2020,
at 2 pm EST.

Background:

The following information has been adapted for IDP GIS audiences from
the Service
Change Notice
<https://www.weather.gov/media/notification/pdf2/pns20-85ncep_web_access.pdf>
issued by Brian Gross Acting Director, NWS/NCEP on November 18, 2020

As demand for data continues to grow across NCEP websites including
https://www.weather.gov/gis/  As demand for NOAA data grows, NCEP is
proposing to put new limits into place to safeguard web services hosted on
NCEP infrastructure.

The frequency of how often these websites are accessed by the public has
created limitations and infrastructure constraints. To add new or upgraded
streams of data, there has to be a reduction in the number of connections
into the NCEP systems. The mitigation will reduce the strain on NCEP
infrastructure, ensuring a more robust level of service for all users.

 For example, a possible mitigation would lower the limit of the number of
connections to 60 per minute for a given user accessing any of the websites
listed in the full change notice linked below. This would be a cumulative
limit for any type of data request across any website.  A "head" request
will count towards the limit the same as a "get" request. Websites
affected, both ftp and https, would include all IDP GIS web services
including, but not limited to, the following urls:

https://www.weather.gov/gis
https://www.weather.gov/gis/WebServices
https://idpgis.ncep.noaa.gov/arcgis/rest/services
https://www.weather.gov/gis/AWIPSShapefiles
https://idpgis.ncep.noaa.gov/arcgis/rest/services/NWS_Forecasts_Guidance_Warnings
https://idpgis.ncep.noaa.gov/arcgis/rest/services/NWS_Climate_Outlooks
<https://idpgis.ncep.noaa.gov/arcgis/rest/services/NWS_Forecasts_Guidance_Warnings>
https://idpgis.ncep.noaa.gov/arcgis/rest/services/NWS_Observations
<https://idpgis.ncep.noaa.gov/arcgis/rest/services/NWS_Forecasts_Guidance_Warnings>
https://idpgis.ncep.noaa.gov/arcgis/rest/services/radar


NWS/NCEP will be holding a virtual public forum to discuss this and other
mitigation options on December 8, 2020, at 2 pm EST.  One can register for
the meeting at:
https://register.gotowebinar.com/register/6331491940012140301

The full NWS Service Change Notice about this topic can be found at
https://www.weather.gov/media/notification/pdf2/pns20-85ncep_web_access.pdf


-- 
Kari Sheets, PMP
Integrated Dissemination Program - Geographic Information Systems
NOAA National Weather Service
U.S. Department of Commerce
301-836-2368
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