The National Weather Service is proposing to issue full-ocean Atlantic and Pacific sea-state analyses twice each day while discontinuing eight smaller regional wind-and-wave analysis products.
Under the proposal, both full-basin products would carry effective times of 00 and 12 Coordinated Universal Time. The Atlantic full-ocean analysis now runs at 12 UTC, while the Pacific product runs at 00 UTC.
NWS would add a 00 UTC Atlantic product under heading PJAA98 KWNM and a 12 UTC Pacific product under PJBA99 KWNM. Existing full-ocean headings would remain part of the twice-daily set.
The eight regional products proposed for discontinuation cover smaller areas off parts of the U.S. Atlantic and Pacific coasts at 00, 06, 12 and 18 UTC. NWS says those regions are already included within the full-ocean analyses.
The change trades regional frequency for broader basin consistency. Mariners who now use a six-hour regional product should compare its timing and coverage with the proposed full-ocean schedule rather than assume the products are interchangeable in every workflow.
NWS says the proposal is intended to align products across its marine centers and improve operational consistency. That is the agency's rationale, not evidence that every user will prefer the new cadence.
Public comments are open through Aug. 31. Questions or feedback can be sent to the NWS Marine Services address listed in the public information statement.
No change has taken effect. NWS says any implementation would occur in fall 2026 and would be announced separately through a Service Change Notice after the comment process.
The practical test is whether twice-daily basin products meet mariners' timing and detail needs without leaving a gap created by the regional retirements. The final notice should explain any changes made in response to user feedback.