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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For older PNS, SCNs (and TINs), go to https://www.weather.gov/notification/archive
Updated SCNs Sent in 2020 for Previous Years
For older PNS, SCNs and TINs see our archive: https://www.weather.gov/notification/archive