Describes the public technical work of the World Meteorological Organization relevant to risk: the WMO Information System 2.0 publish-subscribe architecture, the Unified Data Policy for free and unrestricted exchange of core data, the Register of Alerting Authorities and CAP alert aggregation, the Global Multi-hazard Alert System, hazardous-event cataloguing and the Early Warnings for All initiative, and what Nexus alert and real-time profiles could contribute. A section of the Early warning and anticipatory action subsite. Every artifact of the area carries a UNI (Unique Nexus Identifier), which identifies and never certifies.
Context entry PROPOSED for the Nexus Standards registry.
Nexus Standards (2026). WMO and hydrometeorological services: area brief, Early Warning and Anticipatory Action (PROPOSED). https://nexustandards.com/early-warning/wmo-and-hydromet-services/. Last reviewed 2026-10-17.
Files carry the credits and the licence line; they are generated in your browser and nothing is sent. Downloads need script.
The multilateral and institutional technical areas section of Early Warning and Anticipatory Action. Scope as the area context entry states it (PROPOSED).
In scope 5
Out of scope 3
Jurisdictions No jurisdiction note is recorded for this area yet; jurisdiction narrows what applies and never implies that a Nexus profile satisfies a law.
Sources the area reads or proposes. Delivery follows GRIx first; a source is shown live only after an owner decision admits it for public pages.
No legal register row admits any of these sources for live display on public pages yet, so nothing is read from them here. A register row that exists records the source for the governed GRIx path; admission for public pages is a separate owner decision.
ECMWF open data (forecast fields)pending admission
European Centre for Medium-Range Weather Forecasts · four times daily
CC BY 4.0
GRIx governed readregister row exists
WMO CAP alert hub (alerts from registered alerting authorities)pending admission
WMO and national alerting authorities · real time
WMO Unified Data Policy (free and unrestricted exchange) plus each issuing authority's terms
GRIx governed readregister row exists
WMO OSCAR/Surface station metadatapending admission
WMO · continuous
WMO terms of use (to be confirmed)
build-time snapshotproposed register row
Relations are register entries (NS-14), never conformance or equivalence statements; hover or focus a relation for its meaning. Names of standards bodies and their standards belong to their stewards and are used only to identify the documents; no text of an external standard is reproduced here.
Indicator names and codes as their stewards publish them; values appear only from a governed GRIx source, never typed into a page.
Each coupling names the mechanism that links this area to another; select a card on the canvas to trace it. Mechanisms are stated in the context bank (PROPOSED).
Fig.RUNNING marks the area you are reading; DONE an area in the same subsite, QUEUED an area elsewhere and GATE a subsite reached. Tags give reading order only, never a status. Design, not a record.
GCRI Canada decides under its own evidence rules whether hydromet-derived records are usable; describing WMO systems is not acceptance.
The Global Risks Forum (GRF) decides under its own rules how early-warning work features in its programmes; this section implies no recognition.
The Global Risks Alliance (GRA) decides capital readiness under its own criteria; warning-coverage records only inform its reviewers' view of preparedness.
Each institution decides under its own rules what it reads as evidence; no pathway is an approval, a readiness statement or investment advice.
The Nexus Standards the area context entry lists. Every one is proposed or specified; none is adopted by an authority.
Status proposed · 0 rules stated. Read NS-3
Status proposed · 5 rules stated. Read NS-9
Status proposed · 6 rules stated. Read NS-11
Version and feed state per standard; every row reads source feed pending admission until a register row admits a feed.
Today · in your browserPick a sector, hazard family, capability and artifact type; the registry routes the standards and says why.
PlannedReference deployments and the sandbox on simulated data; planned until the path is wired.
A console computes from the registry and shows its reasons; it never decides, approves or certifies.
Describe WMO's systems accurately and build open CAP and WIS 2.0 consumer profiles and test suites that national services could reuse.
No working group is chartered yet; a community may charter this one under NS-13 through a docket.
Closed or paywalled standards appear by name and link only; any compatibility profile of one is built on simulated data and kept on protected pages until an institutional arrangement with the issuing body is recorded. Nexus Standards is not affiliated with, endorsed by or certified by any standards body named here.
The working group may name closed standards later; they would be listed here by name and link only.
Hazards and threats 5
Sectors 0
No sector is listed for this area; it serves every sector through the areas it couples with.
Peer-reviewed sources and published statistics on the publishers' own domains, as the context entry cites them. No Risk Academy faculty pathway is linked to this area yet; one is linked when a faculty publishes a pathway that fits.
Risk Academy disciplines that teach WMO and hydrometeorological services, with their courses; the GCRI Canada, The Global Risks Forum (GRF) and The Global Risks Alliance (GRA) subsites that carry those disciplines; and the Nexus Foundry systems the standards name. Mappings are proposed for review (Risk Academy standards map, 2026-10-17); a link says a page on the same subject exists, never an endorsement or a conformance statement; framework names in course titles are named and linked, never reproduced.
Propose a change, join the working group or name a source. Area entries are PROPOSED content for the Nexus Standards registry; a UNI identifies and never certifies, and nothing on this site is a certification, an approval or a readiness statement.
Nexus Standards documents CC BY 4.0 · tooling Apache-2.0 · counsel review pending (DEC-2026-10-16-NEXUS-STANDARDS-OPEN-LICENCE). External standards are named and linked under their own licences; a UNI (Unique Nexus Identifier) identifies, it never certifies. · Generated from the Nexus Standards corpus at commit 437ae044c5cb (2026-10-17); proposed and open.