KHRF TAF
Terminal aerodrome forecast for Ravalli County (HRF · KHRF), Hamilton, MT. Issued 18 Sep 2026 0520Z, valid 0600Z to 0600Z, decoded period by period below. · Open on the map
All of Ravalli County — runways, frequencies, charts and live weatherTAF issued 18 Sep 2026 0520Z
valid 0600Z to 0600ZTAF KHRF 180520Z 1806/1906 VRB06KT P6SM SCT080 FM181500 16005KT P6SM -SHRA OVC080 PROB30 1815/1817 6SM -TSRA BR BKN040CB FM182100 19007KT P6SM -SHRA VCTS BKN070CB PROB30 1821/1824 6SM -TSRA BR BKN040CB
Times are UTC (Zulu), as they appear in the bulletin.
Period by period
| Period (UTC) | Change | Wind | Vis | Ceiling | Sky | Cat |
|---|---|---|---|---|---|---|
| 0600Z to 1500Z | Initial | Variable at 6 kt | 6+ SM | Clear | Scattered at 8,000 ft AGL | VFR |
| 1500Z to 2100Z | FM | 160° at 5 kt | 6+ SM | 8,000 ft OVC | Overcast at 8,000 ft AGL | VFR |
| 1500Z to 1700Z | PROB | Calm | 6+ SM | 4,000 ft BKN | Broken at 4,000 ft AGL | VFR |
| 2100Z to 0600Z | FM | 190° at 7 kt | 6+ SM | 7,000 ft BKN | Broken at 7,000 ft AGL | VFR |
| 2100Z to 0000Z | PROB | Calm | 6+ SM | 4,000 ft BKN | Broken 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.
Frequently asked
What is the current TAF for KHRF?
The forecast issued 18 Sep 2026 0520Z for Ravalli County reads: TAF KHRF 180520Z 1806/1906 VRB06KT P6SM SCT080 FM181500 16005KT P6SM -SHRA OVC080 PROB30 1815/1817 6SM -TSRA BR BKN040CB FM182100 19007KT P6SM -SHRA VCTS BKN070CB PROB30 1821/1824 6SM -TSRA BR BKN040CB
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 KHRF
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Something here wrong or out of date?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.