National Weather Service United States Department of Commerce

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.

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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 (SCN) 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