Meteorology and Flight Planning
Once you know how to pick out the TAF forecast
time periods, the same logical sequence that we
saw in METAR will follow. Below, a TAF is broken
down to highlight its individual segments. Key
words (and their definitions) indicating a new time
period has started are in boldface
KPIT 091730Z 091818 22020KT 3SM -SHRA
FM2030 30015G25KT 3SM SHRA OVC015
WS015/30045KT TEMPO 2022 1/2SM TSRA
FM2300 27008KT 5SM -SHRA BKN020 OVC040
PROB40 0407 00000KT 1SM -RA BR
FM1000 22010KT 5SM -SHRA OVC020 BECMG
1315 20010KT P6SM NSW SKC
The Where, When, and Wind trick works with TAF;
however, here's a little twist with the "when"
KPIT 091730Z 091818 22020KT
(1) KPIT is the ICAO station identifier.
(2) The usual 3-letter identifiers are preceded
by a "K" for the contiguous United States.
(3) Alaska and Hawaii will use 4-letter
identifiers beginning with "PA" and "PH"
(4) Changes are planned to incorporate
3-letter identifiers for those weather
reporting stations where numbers and
letters are now used (e.g., W10 to KHEF)