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PUBLIC INFORMATION STATEMENT 25-62
NATIONAL WEATHER SERVICE HEADQUARTERS SILVER SPRING MD
130 PM EDT MON SEP 15 2025
TO: SUBSCRIBERS:
-NOAA WEATHER WIRE SERVICE
-EMERGENCY MANAGERS WEATHER INFORMATION NETWORK
-NOAAPORT
-WMO MEMBER STATES
-WMO RA-IV MEMBER STATES AND WEATHER ENTERPRISE
ORGANIZATIONS
OTHER NWS PARTNERS, USERS AND EMPLOYEES
FROM: GEORGE JUNGBLUTH, DIRECTOR
OFFICE OF DISSEMINATION
SUBJECT: SOLICITING COMMENTS ON THE PROPOSED NEW GLOBAL CACHE
SERVICE FOR WIS 2.0 SERVICES THROUGH OCTOBER 24, 2025
THE WMO INFORMATION SYSTEM 2.0 (WIS2) IS A FRAMEWORK FOR WMO
DATA SHARING IN THE 21ST CENTURY FOR ALL WMO DOMAINS AND
DISCIPLINES. IT SUPPORTS THE WMO UNIFIED DATA POLICY, THE GLOBAL
BASIC OBSERVING NETWORK AND MAKES INTERNATIONAL, REGIONAL, AND
NATIONAL DATA SHARING SIMPLE, EFFECTIVE, AND INEXPENSIVE. THE
WIS2 ARCHITECTURE CONSISTS OF WIS2 NODES, WHICH ARE THE DATA
PROVIDERS AND A SET OF GLOBAL SERVICES. THE NWS HAS COMMITTED
TO PROVIDING A WIS2 NODE SERVICE THAT CONTAINS DATA FOR WMO
“CORE” AND “RECOMMENDED” DATA AS DESCRIBED IN WMO’S UNIFIED
DATA
POLICY, A GLOBAL BROKER PUBLICATION/SUBSCRIPTION SERVICE, AND A
GLOBAL CACHE SERVICE FOR THE DISSEMINATION OF WMO “CORE” DATA.
THE NWS WIS2 NODE WENT OPERATIONAL IN MAY 2025. THE NWS GLOBAL
BROKER WENT OPERATIONAL IN JULY 2025. ON OR ABOUT SEPTEMBER
26TH, 2025, THE NWS WILL EXPAND ITS WIS2 CAPABILITIES BY ADDING
A GLOBAL CACHE SERVICE THAT WILL ALLOW CUSTOMERS THE ABILITY TO
DOWNLOAD WMO “CORE” DATA, AS IDENTIFIED IN THE WMO UNIFIED DATA
POLICY, FROM THE CANONICAL LINK IN PUBLICATION/SUBSCRIPTION
MESSAGE NOTIFICATIONS.THE NWS IS SOLICITING COMMENTS ON THE
PROPOSED NEW WIS2 SERVICE THROUGH OCTOBER 24, 2025.
THE NWS GLOBAL CACHE IS AN MQTT SERVICE:
WIS2CACHE.GLOBALDATA.NWS.NOAA.GOV AVAILABLE ON PORT 1883,
SSL/TLS ON PORT 8883, AND WSS ON PORT 443 ON OR ABOUT SEPTEMBER
26, 2025. IT IS RECOMMENDED THAT CONSUMERS USE THE MESSAGE
QUEUING TELEMETRY TRANSPORT(MQTT)EXPLORER APPLICATION TO MAKE A
CONNECTION TO THE NWS MQTT GLOBAL BROKER SERVICE. THE USERNAME
AND PASSWORD CREDENTIALS ARE EVERYONE/EVERYONE. WITHIN THE MQTT
EXPLORER APPLICATION, SET SUBSCRIBED TOPICS TO: “CACHE/A/WIS2/#”
FEEDBACK ON THE PROPOSED WIS2.0 SERVICES CAN BE PROVIDED VIA
EMAIL TO THE FOLLOWING ADDRESS:
NWS.WEBFEEDBACK@NOAA.GOV
NATIONAL PUBLIC INFORMATION STATEMENTS ARE ONLINE AT:
HTTPS://WWW.WEATHER.GOV/NOTIFICATION/
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