The wind must blow from within this arc. Direction is the same for both wings.
Ideal speed
6–14 mph
Ceiling · Paragliding
≤ 19 mph base · gusts ≤ 23
Top of the range for paragliding (any rating). Switch wings up top to compare. Hang gliders hold roughly 10 mph more than paragliders.
A separate SE/S-facing sub-launch of the Sieben Ranch area north of Helena (~5,100 ft), opposite aspect to the main W/NW launch. No club guide exists, so the SE-through-S window is inferred. Expect afternoon thermals, possible overdevelopment, and lee rotor if wind backs to W/NW. Private ranch land - landowner permission and a local briefing required before flying.
Borderline only 4pm–6pm — best around 4pm: 7 mph NNE, gusts 8. All borderline — fly it with a close eye. Outside the window, light enough for a sledder.
TuesdayFlyableflyable 7am–12pm🌅 sunset 6:44 PM
7a
11g13
SSE
8a
10g13
SSE
9a
11g14
SSE
10a
10g12
SSE
11a
9g11
S
12p
8g9
S
1p
5g12
S
2p
4g11
S
3p
3g9
SSE
4p
2g7
S
5p
2g5
S
6p
2g4
S
Flyable 7am–6pm — best around 7am: 11 mph SSE, gusts 13. 9 clean hrs, the rest borderline.
🌅 Wonder windGlass-off possible 4pm–6pm — smooth, light S ~2 mph, clear evening sky, weak daytime heating.
✓ Light, smooth wind✓ Straight in the window– Wind dying off into evening✓ Clear skies (radiative cooling)– Day built a thermal layer
WednesdaySlim windowflyable 6pm🌅 sunset 6:42 PM
7a
8g18
S
8a
9g20
S
9a
9g20
S
10a
9g20
S
11a
8g20
S
12p
7g19
S
1p
6g18
S
2p
5g16
S
3p
4g14
S
4p
3g11
S
5p
3g8
S
6p
2g6
S
Flyable 4pm–6pm — best around 6pm: 2 mph S, gusts 6. 1 clean hr, the rest borderline.
🌅 Wonder windGlass-off possible 5pm–6pm — smooth, light S ~2 mph, some cloud, weak daytime heating.
✓ Light, smooth wind✓ Straight in the window– Wind dying off into evening– Clear skies (radiative cooling)– Day built a thermal layer
ThursdayFlyableflyable 2pm–5pm🌅 sunset 6:40 PM
7a
1g9
NNW
8a
1g9
NNW
9a
1g8
NW
10a
2g8
NNW
11a
2g9
NNW
12p
1g9
NNW
1p
1g9
SSW
2p
4g8
S
3p
6g8
S
4p
6g9
S
5p
5g9
SSW
6p
5g10
SSW
Flyable 8am–6pm — best around 3pm: 6 mph S, gusts 8. 4 clean hrs, the rest borderline.
🌅 Wonder windGlass-off possible 4pm–6pm — smooth, light S ~6 mph, clear evening sky, weak daytime heating.
✓ Light, smooth wind✓ Straight in the window– Wind dying off into evening✓ Clear skies (radiative cooling)– Day built a thermal layer
FridayCautionworkable 7am🌅 sunset 6:39 PM
7a
10g17
S
8a
10g18
S
9a
10g19
S
10a
10g22
S
11a
10g24
S
12p
11g26
S
1p
11g26
S
2p
11g24
S
3p
11g23
S
4p
10g25
S
5p
8g27
S
6p
7g28
S
Borderline only 7am — best around 7am: 10 mph S, gusts 17. All borderline — fly it with a close eye.
SaturdayNot flyableno window🌅 sunset 6:37 PM
7a
8g23
S
8a
9g25
S
9a
9g26
S
10a
9g25
S
11a
10g23
S
12p
10g23
S
1p
9g26
S
2p
8g30
S
3p
7g32
S
4p
6g30
S
5p
5g27
SSE
6p
5g24
SSE
Too gusty — gusts past the 22 mph limit through the day.
Sieben Ranch 2 is a paragliding and hang gliding site in Montana. The launch faces south at 5,161 feet and works best in ESE to SSW wind of about 6 to 14 mph. There are 4 more Wonderwind sites within 50 miles, and the closest is Sieben Ranch, 3 miles away.
Conditions are an automated estimate from public forecast models, not a go/no-go call.
Always check the sky, talk to locals, and fly within your rating. You are responsible for your own safety.
