FCST
– Forecast
FIRE UP
– A favorite phrase of forecasters. It means storms are developing or will develop.
FLASH FLOOD
– A flood that occurs within a few hours (usually less than six) of heavy or excessive rainfall, dam or levee failure.
FLOOD
– High flow, overflow or inundation of a normally dry area which causes or threatens damage.
FLOOD STAGE
– The level of a river or stream at which considerable inundation of surrounding areas will occur.
FLY IN THE OINTMENT
– A favorite phrase of some forecasters. Refers to a forecast problem or a potential forecast problem. Could also be in reference to a forecasting problem that caused a “busted” forecast.
FOEHN
– A warm dry wind on the lee side of a mountain range. The heating and drying are due to adiabatic compression as the wind descend downslope.
FOG
– Water droplets which are suspended in the air near the Earth’s surface and causing reduced visibilities.