NWS Tsunami Data Feed Goes Dark Amid NOAA Cloud Migration

Wayne's own monitoring instruments flagged the fault first: a self-check on the estate's data feed reported the NWS Tsunami feed had gone dark. That trigger prompted a check of the underlying source, the National Centers for Environmental Information (NCEI), which maintains the tsunami-related datasets these feeds typically draw from. According to the NCEI page itself, the agency "is currently moving its data and applications to the cloud," and warns that "this upgrade may result in temporary data access delays" [1]. That is the only explanation offered in the material for any interruption, and it points to a planned technical migration rather than a service failure connected to any tsunami warning or seismic activity. The page describes what the feed normally provides. NCEI, working with the co-located World Data Service for Geophysics, compiles tsunami-related products for warning centres, engineers, oceanographers, seismologists and the public [1]. Its centrepiece is the Global Historical Tsunami Database, covering tsunami events from 2000 B.C. to the present across the Atlantic, Indian and Pacific Oceans, and the Mediterranean and Caribbean Seas [1]. Beyond the historical database, the source lists several tools that appear to sit behind the same infrastructure now being migrated: a map of pre-computed tsunami travel times to coastal locations, calculated using TTT Software with bathymetry from the 2 arc-minute ETOPO2 grid; an interactive timeline for DART bottom pressure recorder (BPR) data sorted by year, WMO code and location; an interactive map and timeline of tsunami events from 1850 to the present; a timeline for digital tide gauge data by National Ocean Service (NOS) code; a Natural Hazards Image Database; the HaZEL search tool for event, run-up, deposit and marigram data; and a broader Natural Hazards Interactive Map covering tsunami, earthquake and volcano events [1]. What the material does not establish is a timeline for when service will be restored, nor whether the outage affects only the web-facing map and timeline tools or extends to the underlying DART and tide-gauge data streams that actual warning centres rely on. The source directs users to a "main article link" and an FAQ for more detail, but neither is included in the material reviewed here, so the practical scope and duration of the delay remain unconfirmed. For Wayne, the immediate takeaway is that this looks like routine housekeeping on NOAA's end rather than a signal of anything happening at sea. The self-check did its job by catching the dropout, but there's no indication in the sourced material of a live tsunami threat behind it — only a data-centre migration that NCEI itself says may cause "temporary" delays [1]. What to watch next: confirmation from NCEI or NOAA on when the cloud migration completes and whether the DART/tide-gauge feeds that feed real-time tsunami alerts are affected, as distinct from the historical and mapping tools described here.