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KTTD TAF

Terminal aerodrome forecast for Portland-Troutdale (TTD · KTTD), Portland, OR. Issued 5 Nov 2026 0520Z, valid 0600Z to 0600Z, decoded period by period below. · Open on the map

All of Portland-Troutdale — runways, frequencies, charts and live weather

TAF issued 5 Nov 2026 0520Z

valid 0600Z to 0600Z
TAF KTTD 050520Z 0506/0606 08004KT 5SM -SHRA BR BKN018 BKN030 OVC035 FM050900 08003KT P6SM SCT012 BKN028 FM051700 00000KT P6SM SCT017 BKN040

Times are UTC (Zulu), as they appear in the bulletin.

Period by period

Period (UTC)ChangeWindVisCeilingSkyCat
0600Z to 0900ZInitial080° at 4 kt5 SM1,800 ft BKNBroken at 1,800 ft AGL, Broken at 3,000 ft AGL, Overcast at 3,500 ft AGLMVFR
    0900Z to 1700ZFM080° at 3 kt6+ SM2,800 ft BKNScattered at 1,200 ft AGL, Broken at 2,800 ft AGLMVFR
      1700Z to 0600ZFMCalm6+ SM4,000 ft BKNScattered at 1,700 ft AGL, Broken at 4,000 ft AGLVFR

        What the change groups mean

        FM
        From — a rapid, permanent change to the conditions that follow.

        What the categories mean

        MVFR
        Marginal VFR — ceiling 1,000 to 3,000 ft and/or visibility 3 to 5 SM.
        VFR
        Visual flight rules — ceiling above 3,000 ft and visibility greater than 5 SM.

        Frequently asked

        What is the current TAF for KTTD?

        The forecast issued 5 Nov 2026 0520Z for Portland-Troutdale reads: TAF KTTD 050520Z 0506/0606 08004KT 5SM -SHRA BR BKN018 BKN030 OVC035 FM050900 08003KT P6SM SCT012 BKN028 FM051700 00000KT P6SM SCT017 BKN040

        How far ahead does a TAF forecast?

        A TAF covers a 24-hour period at most airports and 30 hours at larger ones, issued four times a day at 0000Z, 0600Z, 1200Z and 1800Z. It describes conditions within roughly 5 statute miles of the airport, not the surrounding area.

        What do FM, BECMG and TEMPO mean?

        FM (from) marks a rapid, permanent change at the stated time. BECMG (becoming) marks a gradual change over the stated window. TEMPO marks conditions expected for less than half the period, in spells of under an hour each. PROB30 and PROB40 give the probability of the conditions that follow.

        More about KTTD

        Forecasts from the US National Weather Service Aviation Weather Center. Times are UTC (Zulu). For planning and education only — always confirm with an official preflight briefing.

        Something here wrong or out of date? Report a data problem.