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appears in the remarks section of an automated report.
30.3.5 Wind. The wind is reported as a five digit
group (six digits if speed is over 99 knots). The first
three digits are the direction from which the wind is
blowing, in tens of degrees referenced to true north,
or “VRB” if the direction is variable. The next two
digits is the wind speed in knots, or if over 99 knots,
the next three digits. If the wind is gusty, it is reported
as a “G” after the speed followed by the highest gust
reported. The abbreviation “KT” is appended to
denote the use of knots for wind speed.
EXAMPLE-
13008KT - wind from 130 degrees at 8 knots
08032G45KT - wind from 080 degrees at 32 knots with
gusts to 45 knots
VRB04KT - wind variable in direction at 4 knots
00000KT - wind calm
210103G130KT - wind from 210 degrees at 103 knots with
gusts to 130 knots
If the wind direction is variable by 60 degrees or more and
the speed is greater than 6 knots, a variable group
consisting of the extremes of the wind direction separated
by a “V” will follow the prevailing wind group.
32012G22KT 280V350
30.3.5.1 Peak Wind. Whenever the peak wind
exceeds 25 knots, “PK WND” will be included in
Remarks; e.g., PK WND 280045/1955 “Peak wind
two eight zero at four five occurred at one niner five
five.” If the hour can be inferred from the report time,
only the minutes will be appended; e.g., PK WND
34050/38 “Peak wind three four zero at five zero
occurred at three eight past the hour.”
30.3.5.2 Wind Shift. Whenever a wind shift
occurs, “WSHFT” will be included in remarks
followed by the time the wind shift began; e.g.,
WSHFT 30 FROPA “Wind shift at three zero due to
frontal passage.”
30.3.6 Visibility. Prevailing visibility is reported in
statute miles with “SM” appended to it.
EXAMPLE-
7SM . . . . . . . . . seven statute miles
15SM . . . . . . . . fifteen statute miles
1/2SM . . . . . . . . one-half statute mile
30.3.6.1 Tower/Surface Visibility. If either tower
or surface visibility is below 4 statute miles, the lesser
of the 2 will be reported in the body of the report; the
greater will be reported in remarks.
30.3.6.2 Automated Visibility. ASOS visibility
stations will show visibility ten or greater than ten
miles as “10SM.” AWOS visibility stations will show
visibility less than 1/4 statute mile as “M1/4SM” and
visibility ten or greater than ten miles as “10SM.”
30.3.6.3 Variable Visibility. Variable visibility is
shown in remarks when rapid increase or decrease by
1/2 statute mile or more and the average prevailing
visibility is less than 3 statute miles; e.g., VIS 1V2
means “visibility variable between 1 and 2 statute
miles.”
30.3.6.4 Sector Visibility. Sector visibility is
shown in remarks when it differs from the prevailing
visibility, and either the prevailing or sector visibility
is less than 3 statute miles.
EXAMPLEVIS
N2 . . . . . . . visibility north two
30 AUG 07
AIP
United States of America
GEN 3.5-62
15 MAR 07
Nineteenth Edition Federal Aviation Administration
30.3.7 Runway Visual Range (when reported).
“R” identifies the group followed by the runway
heading (and parallel runway designator, if needed)
“/” and the visual range in feet (meters in other
countries) followed with “FT.” (“Feet” is not
spoken.)
30.3.7.1 Variability Values. When RVR varies by
more than on reportable value, the lowest and highest
values are shown with “V” between them.
30.3.7.2 Maximum/Minimum Range. “P” indicates
an observed RVR is above the maximum value
for this system (spoken as “more than”). “M”
indicates an observed RVR is below the minimum
value which can be determined by the system (spoken
as “less than”).
EXAMPLER32L/
1200FT - Runway Three Two Left R-V-R one
thousand two hundred
R27R/M1000V4000FT - Runway Two Seven Right R-V-R
variable from less than one thousand to four thousand.
30.3.8 Weather Phenomena. In METAR, weather
is reported in the format:
Intensity / Proximity / Descriptor /
Precipitation / Obstruction to Visibility /
Other
NOTEThe
“/” above and in the following descriptions (except as
the separator between the temperature and dew point) are
for separation purposes in this publication and do not
appear in the actual METARs.
　
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