KTYS TAF
Terminal aerodrome forecast for McGhee Tyson Airport (TYS · KTYS), Knoxville/Maryville, TN. Issued 6 Aug 2026 2321Z, valid 0000Z to 0000Z, decoded period by period below.
All of McGhee Tyson Airport — runways, frequencies, charts and live weatherTAF issued 6 Aug 2026 2321Z
valid 0000Z to 0000ZTAF KTYS 062321Z 0700/0724 VRB03KT P6SM SCT150 FM071000 00000KT 6SM BR BKN015 FM071500 23005KT P6SM SCT025 FM071700 23007KT P6SM VCTS SCT040CB
Times are UTC (Zulu), as they appear in the bulletin.
Period by period
| Period (UTC) | Change | Wind | Vis | Ceiling | Sky | Cat |
|---|---|---|---|---|---|---|
| 0000Z to 1000Z | Initial | Variable at 3 kt | 6+ SM | Clear | Scattered at 15,000 ft AGL | VFR |
| 1000Z to 1500Z | FM | 000° at 0 kt | 6+ SM | 1,500 ft BKN | Broken at 1,500 ft AGL | MVFR |
| 1500Z to 1700Z | FM | 230° at 5 kt | 6+ SM | Clear | Scattered at 2,500 ft AGL | VFR |
| 1700Z to 0000Z | FM | 230° at 7 kt | 6+ SM | Clear | Scattered at 4,000 ft AGL | VFR |
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.
Frequently asked
What is the current TAF for KTYS?
The forecast issued 6 Aug 2026 2321Z for McGhee Tyson Airport reads: TAF KTYS 062321Z 0700/0724 VRB03KT P6SM SCT150 FM071000 00000KT 6SM BR BKN015 FM071500 23005KT P6SM SCT025 FM071700 23007KT P6SM VCTS SCT040CB
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 KTYS
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.