Skip Navigation 
NOAA logo - Click to go to the NOAA homepage National Weather Service   NWS logo - Click to go to the NWS homepage
Analyze, Forecast and Support Office

National Service Change and
Technical Implementation Notices

When NWS proposes or finalizes changes to products or services, this page is updated and official notices are sent out on the NOAA Weather Wire Service (NWWS), the Emergency Managers Weather Information Network (EMWIN) and NOAAPort.

Subscribe/Unsubscribe to the PNS/SCN list

Public Information Statements: 2018

Public Information Statements: 2017

PNS: 2016

PNS Issued in 2015 or earlier Updating Earlier Notices

For older PNS, SCNs and TINs go to

Service Change Notices (SCNs) Issued in 2018

SCNs Issued in 2017

SCNs Issued in 2016

Technical Implementation Notices: 2017 (Only updated TINs after 1/1/17)

Technical Implementation Notices: 2016

For older TINs, SCNs, and PNSs go to

NOAA, National Weather Service
Office of Climate, Water, and Weather Services
1325 East West Highway
Silver Spring, MD 20910
Questions? Comments?

Last Updated: May 24, 2018

Privacy Policy
About Us
Career Opportunities