IRFP-01
Metro Review
d. Symbology
(1) Wind shaft - depicts the quadrant from which the wind is
blowing
(a) To 8 cardinal points of compass
(b) Number near the end of the shaft indicates direction to
nearest 10 degrees
(2) Wind velocity indicated at top of shaft
(a) Flag for 50 kts
(b) Barb for 10 kts
(c) Half barb for 5 kts
(d) Accuracy to nearest 5 kts
(e) If calm or light and variable, wind will be shown as “99”
to the lower left corner of station model
(3) Temperature depicted in degrees Celsius near base of
wind flag
VI. Printed reports and forecasts 21.1.1.5
A. METAR 21.1.1.5.4
Fig 24: METAR
NOTE: METAR/TAF weather codes became effective July 1, 1996, at
0800 UTC. The following information is current as of April 1996.
However, check the Aeronautical Information Manual and latest
publications for more complete information and possible differences
between the format and definitions presented here.
1. Beginning July 1, 1996, at 0800 UTC, the United States converted
airport surface observations (SAs and SPs) and airport terminal
weather forecasts to the International Civil Aviation Organization
(ICAO) formats
a. The surface observations and terminal forecast formats and
coding changed
b. Other weather products such as winds aloft (FD), area
forecasts (FA), and pilot reports (PIREPs) changed little except
to incorporate the new weather coding and station identifiers
(8-97) Original
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