KAPC TAF
Terminal aerodrome forecast for Napa County (APC · KAPC), Napa, CA. Issued 21 Sep 2026 0520Z, valid 0600Z to 0600Z, decoded period by period below. · Open on the map
All of Napa County — runways, frequencies, charts and live weatherTAF issued 21 Sep 2026 0520Z
valid 0600Z to 0600ZTAF KAPC 210520Z 2106/2206 23008KT P6SM BKN200 FM210800 22004KT P6SM OVC010 FM211900 21012KT P6SM BKN200 FM220400 22008KT P6SM BKN009
Times are UTC (Zulu), as they appear in the bulletin.
Period by period
| Period (UTC) | Change | Wind | Vis | Ceiling | Sky | Cat |
|---|---|---|---|---|---|---|
| 0600Z to 0800Z | Initial | 230° at 8 kt | 6+ SM | 20,000 ft BKN | Broken at 20,000 ft AGL | VFR |
| 0800Z to 1900Z | FM | 220° at 4 kt | 6+ SM | 1,000 ft OVC | Overcast at 1,000 ft AGL | MVFR |
| 1900Z to 0400Z | FM | 210° at 12 kt | 6+ SM | 20,000 ft BKN | Broken at 20,000 ft AGL | VFR |
| 0400Z to 0600Z | FM | 220° at 8 kt | 6+ SM | 900 ft BKN | Broken at 900 ft AGL | IFR |
What the change groups mean
- FM
- From — a rapid, permanent change to the conditions that follow.
What the categories mean
- VFR
- Visual flight rules — ceiling above 3,000 ft and visibility greater than 5 SM.
- MVFR
- Marginal VFR — ceiling 1,000 to 3,000 ft and/or visibility 3 to 5 SM.
- IFR
- Instrument flight rules — ceiling 500 to 999 ft and/or visibility 1 to less than 3 SM.
Frequently asked
What is the current TAF for KAPC?
The forecast issued 21 Sep 2026 0520Z for Napa County reads: TAF KAPC 210520Z 2106/2206 23008KT P6SM BKN200 FM210800 22004KT P6SM OVC010 FM211900 21012KT P6SM BKN200 FM220400 22008KT P6SM BKN009
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 KAPC
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Something here wrong or out of date?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.