Aviation Weather Charts
Local:
UTC:
Charts released every 3 hours • Available 2 hours before
Loading charts...
Abbreviations for CB and TCU
| Cumulonimbus (CB) and Cumulus congestus (Towering Cumulus: TCU) | |
|---|---|
| ISOL: | Separate CB or TCU with maximum spatial coverage less than 50% of the area concerned. |
| OCNL: | Occasional CB or TCU with maximum spatial coverage of between 50 and 75% of the area concerned. |
| FRQ: | Frequent CB or TCU with maximum spatial coverage greater than 75% of the area concerned. |
| EMBD: | CB (and not TCU) drowned in the cloud mass. |
Abbreviations for cloud amount (other clouds)
FEW
1 to 2 octas
SCT
3 to 4 octas
BKN
5 to 7 octas
OVC
8 octas
LYR
Layered clouds
LYR is used when two or more stratiform cloud types occur at different levels between the base and top of the layer being described.
Weather Symbols Reference
Symbols and location of significant time
Common Weather Phenomena
| Rain | Continuous precipitation |
| Drizzle | Light precipitation |
| Rain freezing | Freezing on contact |
| Snow | Frozen precipitation |
| Showers | Intermittent precipitation |
| Hail | Ice pellets |
| Freezing fog | Fog below 0°C |
| Moderate/Heavy icing | Ice accumulation |
| Haze | Reduced visibility |
| Widespread fog | Extended fog area |
| Thunderstorms | Convective activity |
| Turbulence | Moderate/Strong |
| Mountain obscuration | Darkening of mountains |
Location Abbreviations
| COT | On the coast |
| LAN | Inland |
| LOC | Locally |
| MAR | At sea |
| MON | Above the Mountains |
| SFC | On the surface |
| VAL | In the valleys |