---
title: "MET.OR.275 World area forecast centre responsibilities — SPECIFIC REQUIREMENTS FOR PROVIDERS OF METEOROLOGICAL SERVICES, ATM/ANS · Avioverse"
description: "The WAFC shall issue: gridded global forecasts of: upper wind;"
url: "https://avioverse.aero/regulations/easa/atm-ans/part-met/subpart-a/met-or-275"
---

# MET.OR.275 World area forecast centre responsibilities

SPECIFIC REQUIREMENTS FOR PROVIDERS OF METEOROLOGICAL SERVICES · Regulation (EU) 2017/373 · EAR revision 12 Mar 2025

IR Implementing rule

## MET.OR.275 World area forecast centre responsibilities

(a) The WAFC shall issue:

(1) gridded global forecasts of:

(i) upper wind;

(ii) upper-air temperature and humidity;

(iii) geopotential altitude of flight levels;

(iv) flight level and temperature of tropopause;

(v) direction, speed and flight level of maximum wind;

(vi) cumulonimbus clouds;

(vii) icing;

(viii) turbulence;

(2) global forecasts of significant weather (SIGWX) phenomena, including volcanic activity and release of radioactive materials.

(b) The WAFC shall ensure that world area forecast system products in digital form are transmitted using binary data communications techniques.

IR · MET.OR.275 — Regulation (EU) 2017/373 · Regulation (EU) 2021/1338 · ATM/ANS Easy Access Rules · EAR revision 12 Mar 2025

AMC Acceptable means of compliance

## AMC1 MET.OR.275(a) World area forecast centre responsibilities

DISSEMINATION OF WORLD AREA FORECAST CENTRE (WAFC) GRIDDED GLOBAL FORECASTS AND FORECASTS OF SIGNIFICANT WEATHER (SIGWX) World area forecast centre (WAFC) gridded global forecasts and forecasts of significant weather (SIGWX) should be disseminated to:

(a) other WAFCs;

(b) centres responsible for the operation of aeronautical fixed service Internet-based services.

AMC · AMC1 MET.OR.275(a) — Regulation (EU) 2017/373 · ED Decision 2022/004/R · ATM/ANS Easy Access Rules · EAR revision 12 Mar 2025

[All rules in SUBPART A — ADDITIONAL ORGANISATION REQUIREMENTS FOR PROVIDERS OF METEOROLOGICAL SERVICES (MET.OR)](https://avioverse.aero/regulations/easa/atm-ans/part-met/subpart-a)

Consolidated from the EASA Easy Access Rules (revision 12 Mar 2025, extracted 13 Oct 2026) for convenience. Not the official publication — verify against the Official Journal of the European Union and the EASA publications before operational use.