NOTE
The code +FC indicates tornadoes and waterspouts.
NOTE
When an automated weather station is unable to determine
the type of precipitation, the station uses the code UP to
indicate unknown precipitation.
Table 1-17 displays some examples of qualifiers and weather phenomena together.
Type of Phenomenon
Coding
Well developed tornado or waterspout
+FC
Rain shower
SHRA
Freezing rain
FZRA
Freezing drizzle
FZDZ
Light rain
-RA
Snow showers
SHSN
Shallow (ground) fog
MIFG
Partial fog
PRFG
Blowing sand
BLSA
Low drifting snow
DRSN
Fog in the vicinity
VCFG
Table 1-17 -- Types of weather phenomenon
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