FMI - SIGMET in IWXXM | SWIM Registry

Abstract

The service provides the latest SIGMET reports in IWXXM for Helsinki FIR in compliance with ICAO Annex 3, PANS-MET and EU Implementing Regulations.

The IWXXM data can be retrieved via:

Request/reply: OGC API - Environmental Data Retrieval (EDR) endpoint, where the IWXXM is provided as a ZIP archive
Subscription (publish/subscribe): AMQP 1.0, where the message contains the IWXXM as payload

Categorisation

Service Type

SERVICE_DESCRIPTION

Life Cycle Stage

OPERATIONAL

Business Activity Type

AERODROME_OPERATION
AIRSPACE_ORGANISATION_AND_MANAGEMENT
INFORMATION_MANAGEMENT
SERVICE_DELIVERY_MANAGEMENT

Intended Consumer

AIR_TRAFFIC_SERVICE_PROVIDER
AIRPORT_OPERATOR
AIRSIDE_GROUND_HANDLER
CIVIL_AIR_NAVIGATION_SERVICE_PROVIDER
CIVIL_AIRSPACE_USER
COMMUNICATION_NAVIGATION_AND_SURVEILLANCE_SERVICE_PROVIDER
MILITARY_AIR_NAVIGATION_SERVICE_PROVIDER
MILITARY_AIRSPACE_USER
PROVIDER_OF_DATA_SERVICES
REGULATED_METEOROLOGICAL_SERVICE_PROVIDER

Information Exchange Category

METEOROLOGICAL_INFORMATION_EXCHANGE

Application Message Exchange Pattern

Request/Reply
Publish/Subscribe with Push Mechanism

Geospatial Categorisation Description

The dataset is valid for Finland (Helsinki FIR/EFIN).

Provider

FMI

Description

FMI is the designated aeronautical meteorological service provider for Helsinki FIR as designated by the Ministry of Transport and Communications of Finland and as certified by Finnish Transport and Communications Agency.

Type

REGULATED_METEOROLOGICAL_SERVICE_PROVIDER

Point of Contact

Restricted

Contact Information

Restricted

Name

Operational Needs

Description

This service contributes to fulfilling operational needs as defined in Commission Implementing Regulation (EU) 2017/373 and ICAO Annex 3. It supports the EU Implementing Regulation 2021/116 - Common Project One.

Name

Information Exchange Requirements

Description

IER 1 - The information currently included in the SIGMET as defined in Commission Implementing Regulation (EU) 2017/373, ICAO Annex 3 Amendment 82, and PANS-MET.

Name

Capabilities

Description

The service provides high quality, up-to-date, trusted, regulated meteorological information in digital form for use by service consumers within the aviation domain.

Name

Distribute Data

Description

The service distributes the data according to the stored subscriptions and topics.

Real World Effect

Information has been shared; the service consumer gets the requested data.

Name

Request Data

Description

The consumer can request data from the service using an OGC API - EDR endpoint.

Real World Effect

Information has been shared; the service consumer gets the requested data.

Name

Subscribe to Data

Description

The user can subscribe to data via AMQP 1.0. Messages follow the SWIM TI Yellow Profile (Messaging).

Real World Effect

Subscription established; data is received upon publication.

Performance

Time Behaviour

Under normal operations 95% of messages will be delivered within 5 minutes after the issuing time.
Capacity

Capacity of the services is monitored and can be reduced and/or revoked in case of overload of the system.

Reliability

Availability

99.9 % outside planned updates and outages.
Recoverability

Best effort.

Security

Integrity

Integrity is protected by using TLS layer for all the service interface bindings.
Confidentiality

Data delivery is only available for registered users, who need to present their credentials for access to the services using API keys for HTTP based connections, and using SASL plain for AMQP connections.

General Terms and Conditions of Business

Terms and conditions are available at https://en.ilmatieteenlaitos.fi/swim-policy
Information Retainment

According to ICAO Annex 3, meteorological information is retained for a period of at least 30 days from the date of issue.
Subscription

Consumers begin receiving data by connecting to the published endpoints with appropriate credentials; no explicit subscribe/unsubscribe API is provided. Contact FMI Aviation Customer Service via e-mail for credentials and details.
Authentication and authorization

Access is limited by policy to users within the Aviation domain. Authentication is managed using SASL PLAIN for AMQP, and API keys for EDR API. In the future authentication and authorization via EACP issued Aviation Domain Certificate may be required to use the services.
Encryption

Communication is encrypted per SWIM TI Yellow Profile.
Signature

The requested information may contain a digital signature using SHA-256 or stronger.

Type

SELF_VALIDATION

Evidence

Service tested by FMI

AIRM

ATM Information Reference Model
AMQP

Advanced Queueing Message Protocol (1.0) â per SWIM TI Yellow Profile Messaging
ATC

Air Traffic Control
ATM

Air Traffic Management
FMI

Finnish Meteorological Institute
HTTP

Hypertext Transfer Protocol
ICAO

International Civil Aviation Organization
IER

Information Exchange Requirement
IR

Implementation Rules
ISRM

Information Service Reference Model
IWXXM

ICAO Meteorological Information Exchange Model
METAR

Meteorological Aerodrome Report
NAMCON

Northern Europe Aviation Meteorology Consortium
NWS

National Weather Service
OGC

Open Geospatial Consortium
PCP

Pilot Common Project
REQ

Requirement
WMO

World Meteorological Organization
SIGMET

Significant meteorological phenomena
TAF

Terminal Aerodrome Forecast

Filtering Capabilities (EDR)

Filtering is exposed through OGC API - EDR query parameters and collections, including spatial, temporal, and parameter subsetting of IWXXM-derived attributes (e.g., aerodrome ICAO designator, validity period).
Filtering Capabilities (AMQP)

Topic-based filtering is available through the brokerâs topic hierarchy. Private queues with provider-defined selectors consistent with SWIM TI Yellow Profile may be provisioned.

The service provider ensures that the data offered for the Finnish FIR within this service is created by FMI, a REGULATED_METEOROLOGICAL_SERVICE_PROVIDER. The service may also contain data provided by other REGULATED_METEOROLOGICAL_SERVICE_PROVIDERs from NAMCON states.

Name

SIGMET (Significant Meteorological Information)

Definition

A digital aeronautical meteorological warning for en-route aircraft concerning specified significant weather phenomena, encoded and exchanged using IWXXM.

AIRM Correspondence

AIRM 1.0.0 :: SIGMET â correspondence and mapping notes: https://airm.aero/developers/icao-wxxm-3.0.0-to-airm-1.0.0-index

Datatype

IWXXM 3.x SIGMET

Cardinality

0..*

Constraints

IWXXM version 2023-1 (https://schemas.wmo.int/iwxxm/2023-1/iwxxm.xsd). Payload is raw XML in AMQP messages and zip archive in EDR responses; no size constraints.

Path

/sigmet

Transport Security

AMQP uses amqps:// over TLS. SASL EXTERNAL (client certificate) may be required. Provider may use server certificates in the EACP chain at a later point.
Topic Structure

Messages are published under weather.aviation.sigmet. This covers all messages in the Finnish FIR (EFIN), and may contain messages for the NAMCON area. AMQP 1.0 filters (e.g., ICAO location identifier) can be applied via message headers as defined by the message schema.
Payload Encoding

IWXXM content is carried as plain text XML (not gzipped) via AMQP, and zip archive via EDR API.
Flow Control and Limits

Default link credit and connection limits are to be confirmed; values will be documented in narrative connection documentation when available.

Typical Request/Reply Behaviour

The request is sent from the consumer to the EDR service, which processes the request and returns the requested IWXXM SIGMET message(s) as a zip archive.
Typical Data Distribution Behaviour

The service sends data to consumers when available and matching their connection parameters using AMQP 1.0 per SWIM TI Yellow Profile Messaging.

FMI IT components are monitored with 24/7 maintenance.

EDR Request

The interface is used to receive the data via OGC API - EDR.

PROVIDER_SIDE

SYNCHRONOUS_REQUEST_RESPONSE
- EDR operations
  
  Standard EDR retrieval operations (collection discovery, location queries, temporal subsetting).
  git
  Messages
  
  EDR Request
  
  IN
  
  EDR Response
  
  OUT
Endpoints

Restricted
- SWIM_TI_YP_1_1_HTTP_REST
  
  HTTP(S) REST binding per SWIM Technical Infrastructure Yellow Profile.
- IPV4_SECURE_UNICAST
  
  Service supports IPv4 secure unicast and IPv6 secure unicast over TLS (mTLS per policy).
- EDR Response
  
  Response payload structure and parameters are defined by the OpenAPI document.
AMQP Push Service

The interface is used to receive published data via AMQP 1.0 per SWIM TI Yellow Profile Messaging.

PROVIDER_SIDE
- dataDelivery
  
  The IWXXM payload is delivered directly in the AMQP message or via reference to an EDR resource.
  git
  Messages
  
  dataDelivery
  
  OUT
Endpoints

Restricted
- SWIM_TI_YP_1_1_AMQP_MESSAGING
  
  Binding aligned with EUROCONTROL SWIM Technical Infrastructure Yellow Profile (Messaging).
- IPV4_SECURE_UNICAST
  
  Service supports IPv4 secure unicast and IPv6 secure unicast over TLS (mTLS per policy).
- dataDelivery
  
  AMQP message contract including headers/properties and IWXXM payload shape for SIGMET.

Title

OGC API - Environmental Data Retrieval (EDR)

Standard Type

SERVICE_STANDARD

Conformance Statement

is conformant

Version

1.1.0

Description

OGC API - Environmental Data Retrieval

Title

EUROCONTROL SWIM Technical Infrastructure - Yellow Profile (Messaging, AMQP 1.0)

Standard Type

EUROCONTROL_SPECIFICATION_FOR_SWIM_TECHNICAL_INFRASTRUCTURE

Conformance Statement

is conformant

Version

2.0

Description

Advanced Message Queuing Protocol 1.0 per SWIM TI Yellow Profile

Title

EUROCONTROL SWIM Service Description

Standard Type

EUROCONTROL_SPECIFICATION_FOR_SWIM_SERVICE_DESCRIPTION

Conformance Statement

is compliant

Version

2.0

Description

Description of Service according to EUROCONTROL specifications

FMI - SIGMET in IWXXM v 1.0

Categorisation

Provider