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UpToWhere Can you see it?

Can you see Mount St. Helens from Council Crest Park, Portland?

Yes, you can

86.7 km line of sight toward the north-northeast (bearing 27°), computed on 30 m Copernicus terrain with Earth curvature and standard atmospheric refraction.

The answer

Yes. Mount St. Helens is visible from Council Crest Park, Portland: a clear 86.7 km line of sight, and after Earth's curvature drops the target 513 m, its top still stands 1,692 m above eye level.

On 18 May 1980 Portland watched the ash column climb from its own front porches. The mountain lost about 400 metres of summit that morning and has been rebuilding a dome inside the crater ever since. From Council Crest, does what is left still stand above the horizon?

Straight-line distance86.7 km
Direction27° north-northeast
Observer eye level327 m
Target elevation2,532 m
Curvature drop at the target513 m
Above your eye level1,692 m

From Council Crest Park, Portland, at an eye level of 327 m, the sightline to Mount St. Helens runs 86.7 km and clears every ridge in between. Over that distance Earth's curvature drops the target 513 m below a flat-earth line, but at 2,532 m, it still rises above the horizon. The view is geometrically real: whether you actually get it depends on haze, not terrain.

The terrain profile

0 m1,000 m2,000 m sightlineCouncil Crest ParkMount St. Helens 0 km86.7 km204060
Elevation profile from Council Crest Park, Portland to Mount St. Helens. Like every elevation profile, the vertical axis is stretched (≈10× here), but the geometry is real: mid-path, Earth's surface genuinely stands 147 m above the straight line between the two points (the dashed arc is sea level). Light bends only slightly around that bulge, so whatever it covers stays hidden.
Check your own two points with the calculator →

Frequently asked questions

Can you see Mount St. Helens from Council Crest Park, Portland?

Yes. The terrain-limited line of sight is clear across 86.7 km, accounting for Earth's curvature and standard atmospheric refraction. Atmospheric haze is the only thing that can hide the view.

How far is Mount St. Helens from Council Crest Park, Portland in a straight line?

86.7 km great-circle distance, on a bearing of 27° (north-northeast).

How much does Earth's curvature hide over 86.7 km?

At the target's distance the curvature drop is about 513 m: anything lower than that (relative to the observer's horizon plane) is hidden behind the bulge of the Earth. Mount St. Helens is tall enough to rise above it.

How was this calculated?

UpToWhere walks the full terrain profile between the two points on 30 m-resolution Copernicus GLO-30 elevation data, applying Earth curvature and standard atmospheric refraction (k = 0.13), the same physics surveyors use. You can run the same point-to-point check between any two places on Earth.

More famous sightlines

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