1
Q
”-“
A
LIGHT
2
Q
” “
A
MODERATE
3
Q
”+”
A
HEAVY
4
Q
VC
A
VICINITY
5
Q
BC
A
PATCHES
6
Q
MI
A
SHALLOW
7
Q
BL
A
BLOWING
8
Q
PR
A
PARTIAL
9
Q
DR
A
DRIFTING
10
Q
SH
A
SHOWERS
11
Q
FZ
A
FREEZING
12
Q
TS
A
THUNDERSTORMS
13
Q
DZ
A
DRIZZLE
14
Q
IC
A
ICE CRYSTALS
15
Q
SN
A
SNOW
16
Q
GR
A
HAIL
17
Q
PL
A
ICE PELLETS
18
Q
UP
A
UNKNOWN PRECIPITATION
19
Q
GS
A
SMALL HAIL/ SNOW PELLETS
20
Q
RA
A
RAIN
21
Q
SG
A
SNOW GRAINS
22
Q
BR
A
MIST
23
Q
HZ
A
HAZE
24
Q
DU
A
WIDESPREAD DUST
25
PY
SPRAY
26
FG
FOG
27
SA
SAND
28
FU
SMOKE
29
VA
VOLCANIC ASH
30
DS
DUST STORM
31
PO
WELL DEVELOPED DUST OR SAND SWIRLS
32
FC
FUNNEL CLOUD
33
+FC
TORNADO OR WATERSPROUT
34
SQ
SQUALL
35
SS
SANDSTORM
36
SKC OR CLR
SKY CLEAR 0/8
37
0/8-2/8
FEW
38
SCT
3/8-4/8
39
5/8-7/8
BKN
40
OVC
8/8
41
VERTICAL VISIBILITY OR INDEFINITE CEILING
VV
42
CB
CUMULONIMBUS
43
TOWERING CUMULUS
TCU
44
CEILING
THE HEIGHTS ABOVE EARTH'S SURFACE OF THE LOWEST LAYER OF CLOUDS OR OBSCURING PHENOMENA THAT IS REPORTED AS "BROKEN", "OVERCAST", OR "OBSCURATION" AND NOT CLASSIFIED AS "THIN" OR "PARTIAL"
45
PREVAILING VISIBILITY
THE GREATEST HORIZONTAL VISIBILITY EQUALED OR EXCEEDED THROUGHOUT AT LEAST HALF THE HORIZON CIRCLE WHICH NEED NOT NECESSARILY BE CONTINUOUS
46
WEATHER WARNING
A SPECIAL NOTICE TO NOTIFY INSTALLATION PERSONNEL WHEN AN ESTABLISHED WEATHER CONDITION OF SUCH INTENSITY AS TO POSE A HAZARD TO LIFE OR PROPERTY IS OCCURRING TO OCCUR
47
WEATHER WATCH
A SPECIAL NOTICE TO NOTIFY INSTALLATION PERSONNEL/ SUPPORTED UNITS OF A POTENTIAL FOR ENVIRONMENTAL CONDITIONS OF SUCH INTENSITY AS TO POSE A HAZARD TO LIFE OR PROPERTY
48
WEATHER ADVISORY
WEATHER ADVISORIES PROVIDE SPECIFIC NOTICE TO AN OPERATIONAL AGENCGY OF WEATHER PHENOMENA IMPACTING OPERATIONS BASED ON SUPPORTED UNIT-SUPPLIED CRITICAL WEATHER ELEMENTS
FTM
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Decks in class (4)
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