KJST TAF
Terminal aerodrome forecast for John Murtha Johnstown/Cambria County (JST · KJST), Johnstown, PA. Issued 20 Sep 2026 2330Z, valid 0000Z to 0000Z, decoded period by period below. · Open on the map
All of John Murtha Johnstown/Cambria County — runways, frequencies, charts and live weatherTAF issued 20 Sep 2026 2330Z
valid 0000Z to 0000ZTAF KJST 202330Z 2100/2124 32008KT P6SM VCSH BKN004 OVC008 FM210700 05005KT 4SM BR BKN002 OVC009 FM211700 08008KT 5SM BR OVC015
Times are UTC (Zulu), as they appear in the bulletin.
Period by period
| Period (UTC) | Change | Wind | Vis | Ceiling | Sky | Cat |
|---|---|---|---|---|---|---|
| 0000Z to 0700Z | Initial | 320° at 8 kt | 6+ SM | 400 ft BKN | Broken at 400 ft AGL, Overcast at 800 ft AGL | LIFR |
| 0700Z to 1700Z | FM | 050° at 5 kt | 4 SM | 200 ft BKN | Broken at 200 ft AGL, Overcast at 900 ft AGL | LIFR |
| 1700Z to 0000Z | FM | 080° at 8 kt | 5 SM | 1,500 ft OVC | Overcast at 1,500 ft AGL | MVFR |
What the change groups mean
- FM
- From — a rapid, permanent change to the conditions that follow.
What the categories mean
- LIFR
- Low IFR — ceiling below 500 ft and/or visibility less than 1 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 KJST?
The forecast issued 20 Sep 2026 2330Z for John Murtha Johnstown/Cambria County reads: TAF KJST 202330Z 2100/2124 32008KT P6SM VCSH BKN004 OVC008 FM210700 05005KT 4SM BR BKN002 OVC009 FM211700 08008KT 5SM BR OVC015
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 KJST
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Something here wrong or out of date?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.