| F scale |
Old tornado intensity scale named after Tetsuya Fujita. |
| F |
Fahrenheit |
| FA |
Aviation Area Forecast |
| FAA |
Federal Aviation Administration |
| FAH |
Fahrenheit |
| FAM |
Familiar |
| FAX |
Facsimile transmission |
| +FC |
Funnel cloud (tornado or waterspout) |
| FCEXEC |
A component of the NWSRFS FCST Program. |
| FCST |
Forecast |
| FCSTD |
Forecasted |
| FCSTG |
Forecasting |
| FCSTR |
Forecaster |
| FCSTS |
Forecasts |
| FDR |
Fire Danger Rating |
| FEB |
February |
| FEMA |
Federal Emergency Management Agency |
| FEW |
Few |
| FFA |
Flood or Flash Flood Watch |
| FFG |
Flash Flood Guidance |
| FFS |
Flash Flood Statement |
| FFW |
Flash Flood Warning |
| FG |
Fog |
| FIC |
Flight information center |
| FIG |
Figure |
| FILG |
Filling |
| FIR |
Flight information region |
| FIRAV |
First available |
| FIS |
Flight information service |
| FL |
Flight level or Florida |
| FLD |
Field |
| FLG |
Flashing or Falling |
| FLN |
National Flood Summary |
| FLRY |
Flurry |
| FLRYS |
Flurries |
| FLS |
River Flood Statement |
| FLT |
Flight |
| FLUC |
Fluctuating or fluctuation or fluctuated |
| FLW |
River Flood Warning, follow(s) or following |
| FLWG |
Following |
| FLY |
Fly or flying |
| FM |
From |
| FMT |
Format |
| FNCTN |
Function |
| FNT |
Front |
| FNTGNS |
Frontogenesis |
| FNTL |
Frontal |
| FNTLYS |
Frontolysis |
| FNTS |
Fronts |
| FORNN |
Forenoon |
| FOS |
Family of Services |
| FOS |
Family of Services |
| FPM |
Feet per minute |
| FPO |
Flood Potential Outlook |
| FQT |
Frequent |
| FQTLY |
Frequently |
| FREQ |
Frequency |
| FRI |
Friday |
| FRM |
Form |
| FRMG |
Forming |
| FRMN |
Formation |
| FRONT |
Front (relating to weather) |
| FROPA |
Frontal passage |
| FROSFC |
Frontal surface |
| FRQ |
Frequent |
| FRST |
Frost |
| FRWF |
Forecast wind factor |
| FRZ |
Freeze |
| FRZG |
Freezing |
| FRZN |
Frozen |
| FST |
First |
| FT |
Feet (dimensional unit) or Terminal forecast |
| FTHR |
Further |
| FTP |
File Transfer Protocol |
| FU |
Smoke |
| FVRBL |
Favorable |
| FWD |
Forward |
| FYI |
For your information |
| FZ |
Freezing |
| FZDZ |
Freezing drizzle |
| FZFG |
Freezing fog |
| FZRA |
Freezing rain |
Acronyms
