KNUC TAF
Terminal aerodrome forecast for San Clemente Island Naval Auxiliary Landing Field (NUC · KNUC), San Clemente Island, CA. Issued 6 Aug 2026 2333Z, valid 2300Z to 2300Z, decoded period by period below.
All of San Clemente Island Naval Auxiliary Landing Field — runways, frequencies, charts and live weatherTAF issued 6 Aug 2026 2333Z
valid 2300Z to 2300ZTAF KNUC 0623/0723 27011KT 9999 FEW015 FEW200 QNH2992INS BECMG 0702/0704 VRB06KT 9000 BR BKN010 QNH2994INS TEMPO 0704/0710 OVC009 BECMG 0718/0720 27008KT 9999 SCT010 SCT200 QNH2999INS LAST NO AMDS AFT 0701 NEXT 0715 TX24/0623Z TN16/0712Z FS30243
Times are UTC (Zulu), as they appear in the bulletin.
Period by period
| Period (UTC) | Change | Wind | Vis | Ceiling | Sky | Cat |
|---|---|---|---|---|---|---|
| 2300Z to 0200Z | Initial | 270° at 11 kt | 6+ SM | Clear | Few at 1,500 ft AGL, Few at 20,000 ft AGL | VFR |
| 0200Z to 1800Z | BECMG | Variable at 6 kt | 5.59 SM | 1,000 ft BKN | Broken at 1,000 ft AGL | MVFR |
| 0400Z to 1000Z | TEMPO | Calm | n/a | 900 ft OVC | Overcast at 900 ft AGL | IFR |
| 1800Z to 2300Z | BECMG | 270° at 8 kt | 6+ SM | Clear | Scattered at 1,000 ft AGL, Scattered at 20,000 ft AGL | VFR |
What the change groups mean
- BECMG
- Becoming — a gradual change over the stated window.
- TEMPO
- Temporary — expected for less than half the period, in spells under an hour.
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 KNUC?
The forecast issued 6 Aug 2026 2333Z for San Clemente Island Naval Auxiliary Landing Field reads: TAF KNUC 0623/0723 27011KT 9999 FEW015 FEW200 QNH2992INS BECMG 0702/0704 VRB06KT 9000 BR BKN010 QNH2994INS TEMPO 0704/0710 OVC009 BECMG 0718/0720 27008KT 9999 SCT010 SCT200 QNH2999INS LAST NO AMDS AFT 0701 NEXT 0715 TX24/0623Z TN16/0712Z FS30243
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 KNUC
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.