IRFP-01
Metro Review
(c) V—variable. If the RVR is variable between 2,000 and
4,000 ft for runway 6L: (R06L/2000V4000FT). May contain
up to four RVR reports
e. Significant Present Weather
(1) TSRA (Thunderstorm/Moderate Rain) Format is a
2-character descriptor (e.g., TS, SH, DR) sometimes
followed by a 2-character weather phenomenon (e.g., RA,
SN, FG)
(2) Intensity or proximity of weather phenomenon:
(a) “-”—Light
(b) “+”—Heavy
(c) “no sign”—Moderate
(d) “VC”—in the vicinity
f.
Clouds
(1) OVC010CB—specifies cloud amount, height, and type.
Overcast clouds are present at 1,000 ft consisting of
cumulonimbus clouds
(2) Cloud height is reported in hundreds of feet. When clouds
are composed of towering cumulus or cumulonimbus, TCU
or CB will follow cloud height
(3) Clouds are categorized based on eighths (octas) of the sky
(a) SKC—Sky clear
(b) FEW—>0-2 octas
(c) SCT—3-4 octas
(d) BKN—5-7 octas
(e) OVC—8 octas
(4) Vertical Visibility (VV)—may be listed here for indefinite
ceiling such as “VV004” for Vertical Visibility 400 ft
(8-97) Original
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