Link to FAA source

**Table 1. -- Reportable Contractions for Sky Cover**
Reportable Contractions	Meaning	Summation Amount
VV	Vertical Visibility (indefinite ceiling)	8/8
*SKC or CLR	Clear	0 or 0 below 12,000
FEW	Few	> 0 but < or = 2/8
SCT	Scattered	3/8-4/8
BKN	Broken	5/8-7/8
OVC	Overcast	8/8
CB	Cumulonimbus	When present
TCU	Towering Cumulus	When present

*SKC will be reported at manual stations. The abbreviation, CLR, shall be used at automated stations when no clouds below 12,000 feet are reported.

(5) Indefinite ceilings (W) and sky obscured (X) are no longer reported. It is replaced by vertical visibility (VV). The phraseology for "VV" is "indefinite ceiling <height>"

**Table 2. -- Notations for Reporting Weather**
	Qualifier: INTENSITY or PROXIMITY		Qualifier: DESCRIPTOR		Wx Phenomena: PRECIPITATION		Wx Phenomena: OBSCURATION		Wx Phenomena: OTHER
-	LIGHT	MI	Shallow	DZ	Drizzle	BR	Mist	PO	Well-Developed Dust/Sand Whirls
		BC	Patches	RA	Rain	FG	Fog	SQ	Squalls
	Moderate (NoQualifier)	DR	Low Drifting	SN	Snow	FU	Smoke	FC, +FC	Funnel Cloud, Well-Developed Funnel Cloud, Tornado or Waterspout
		BL	Blowing	SG	Snow Grains	DU	Dust	SS	Sandstorm
+	Heavy or Well-developed	SH	Showers	IC	Ice Crystals	SA	Sand	DS	Duststorm
		TS	Thunderstorm	PE	Ice Pellets	HZ	Haze
VC	In the Vicinity	FZ	Freezing	GR	Hail	PY	Spray
		PR	Partial	GS	Small Hail or Snow Pellets (< 1/4)	VA	Volcanic Ash
				UP	* Unknown Precipitation

The weather groups shall be constructed by considering columns from left to right in this table, in sequence; i.e., intensity, followed by descriptor, followed by weather phenomena; i.e., heavy rain showers(s) is coded as +SHRA. * Automated stations only.