VOLMET
Definition
VOLMET (short for “Vol Météorologique”) is a continuous broadcast of meteorological information for aircraft in flight. It provides updated METAR, TAF, and other weather reports for enroute and destination aerodromes, primarily intended for use by pilots during flight. VOLMET broadcasts are made via high-frequency (HF) and very high-frequency (VHF) radio transmissions and are standardized globally for international aviation use.
Purpose
- Provide real-time weather information to pilots in flight
- Enable route and destination adjustments based on current conditions
- Assist IFR decision-making and approach planning
- Support fuel and alternate calculations based on actual MET conditions
Content of a VOLMET Broadcast
Typically includes:
- METARs: Actual weather conditions at specified aerodromes
- TAFs (optional): Forecasts for selected destinations
- SIGMETs: Significant weather advisories (in some regions)
The broadcast is cyclical, repeating at fixed intervals.
Example Information in VOLMET:
- Surface wind
- Visibility
- Cloud cover
- Temperature and dew point
- QNH (pressure setting)
- Significant weather (e.g., fog, rain, storms)
Transmission Characteristics
Phraseology Example
- Pilot: “Request latest Vienna weather via VOLMET”
- (Or tune directly to VOLMET frequency to listen)
- Broadcast: “Vienna, 081250Z, 27008KT, 9999, BKN040, 18/10, Q1016, NOSIG”
VOLMET vs. ATIS
European VOLMET Example Frequencies
| Station | Region | Frequency (HF) |
|---|---|---|
| Shannon VOLMET | North Atlantic/Europe | 3413, 5505, 8957, 13264 kHz |
| London VOLMET | UK & Europe | 128.6 MHz (VHF), HF variants |
Pilots should consult AIP ENR 1.6 or equivalent for country-specific frequencies and coverage.
Tips for Pilots
- ✅ Know the VOLMET frequencies relevant to your FIR or region
- ✅ Use VOLMET to update weather enroute, especially before descent
- ✅ Practice interpreting METAR/TAF from audio with LearnATC weather modules
- ✅ Use VOLMET in areas without D-ATIS or when unable to contact FIS
