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NOUS41 KWBC 231430
PNSWSH
SERVICE CHANGE NOTICE 26-29
NATIONAL WEATHER SERVICE HEADQUARTERS SILVER SPRING MD
1030 AM EDT MON MAR 23 2026
TO: SUBSCRIBERS
-NOAA WEATHER WIRE SERVICE
-EMERGENCY MANAGERS WEATHER INFORMATION NETWORK
-NOAAPORT
OTHER NWS PARTNERS, USERS AND EMPLOYEES
FROM: AVICHAL MEHRA
DEPUTY DIRECTOR, OCEAN PREDICTION CENTER
SUBJECT: DISCONTINUING 36-HOUR WIND AND WAVE FORECAST FOR A
SMALL PORTION OF THE ATLANTIC AND PACIFIC OCEANS EFFECTIVE APRIL
23, 2026
EFFECTIVE WITH THE 1200 COORDINATED UNIVERSAL TIME (UTC) APRIL
23, 2026 ISSUANCE, THE NATIONAL WEATHER SERVICE (NWS) NATIONAL
HURRICANE CENTER’S (NHC) TROPICAL ANALYSIS AND FORECAST BRANCH
(TAFB) WILL DISCONTINUE THE 36-HOUR WIND/WAVE FORECAST.
DISCONTINUATION OF THE PRODUCT ALIGNS WITH THE NWS GOAL TO
TRANSFORM NATIONAL MARINE OPERATIONS TO A DISTRIBUTED, UNIFIED,
AND SEAMLESS DELIVERY OF MARINE SERVICES TO MARINERS. THIS
TRANSFORMATION AIMS TO, AMONG OTHER THINGS, IMPROVE THE
CONSISTENCY AND INTEGRATION OF MARINE OPERATIONS TO ADVANCE LIFE
AND PROPERTY SAVING SERVICES AT SEA AND INCREASE THE RESILIENCE
OF THE NATION’S GLOBAL SUPPLY CHAINS.
THE NWS’S NATIONAL DIGITAL FORECAST DATABASE (NDFD) PROVIDES
GRAPHICAL FORECASTS OF WINDS, WIND GUSTS, WAVE HEIGHTS, AND
OTHER WEATHER-BASED HAZARDS OVER THE OCEANIC DOMAIN. 36-HOUR
FORECASTS FOR WINDS AND WAVES WILL BE AVAILABLE THROUGH THE NDFD
(HTTPS://DIGITAL.WEATHER.GOV/). FORECAST INFORMATION FROM THE
NDFD CAN BE FOUND AT: HTTPS://VLAB.NOAA.GOV/WEB/MDL/NDFD
COMMENTS CAN BE PROVIDED TO:
NWS MARINE PROGRAM
MARINE, TROPICAL, AND TSUNAMI SERVICES BRANCH
NATIONAL WEATHER SERVICE
MARINE.WEATHER@NOAA.GOV
NATIONAL SERVICE CHANGE NOTICES ARE ONLINE AT:
HTTPS://WWW.WEATHER.GOV/NOTIFICATION/
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