Photo by DIP News

Last evening, Thursday, August 27, 2026, residents of Dubuque, Iowa, and the surrounding Mississippi River region enjoyed a striking deep partial lunar eclipse. With clear skies across much of eastern Iowa, the event offered excellent viewing conditions from backyards, river overlooks, and open parks as the full Sturgeon Moon passed deeply into Earth’s shadow.

This was a partial lunar eclipse of unusual depth. At greatest eclipse, approximately 93–96% of the Moon’s disk lay within Earth’s dark inner shadow (the umbra). Only a thin bright crescent remained along one limb, while the shadowed portion took on the classic coppery-red to dusky-orange glow produced by sunlight filtered and bent through Earth’s atmosphere. Many observers described it as an “almost blood moon.”

Timing in Dubuque (Central Daylight Time)

Dubuque sits in the Central Time Zone, and local circumstances were as follows:

•  Penumbral eclipse began: about 8:23 p.m.

•  Partial eclipse began: about 9:33 p.m.

•  Maximum eclipse: 11:12 p.m. (magnitude ~0.930)

•  Partial eclipse ended: about 12:51 a.m. Friday

•  Penumbral eclipse ended: about 2:01 a.m. Friday

The Moon rose in the east-southeast before the eclipse got underway and climbed steadily through the evening. By maximum, it stood roughly 30–32 degrees above the southeastern horizon—high enough for comfortable viewing without requiring an exceptionally clear horizon. The entire visible sequence lasted more than five hours, with the most dramatic partial phases spanning roughly three hours and 18 minutes.

What Observers Saw

Early on, the penumbral shading was subtle—a gradual dimming that many people noticed only after the umbral “bite” appeared on the Moon’s edge. As the dark shadow advanced, the contrast grew sharp. At mid-eclipse the remaining bright sliver stood out dramatically against the reddish-brown disk. No special equipment was required; the event was fully safe to watch with the naked eye. Binoculars or a small telescope enhanced the curved edge of Earth’s shadow and the subtle color variations across the lunar surface.

Local weather cooperated. Forecasts and reports for eastern Iowa indicated mostly clear to partly cloudy skies with comfortable late-summer temperatures, allowing many people to stay outside for the peak around 11:12 p.m. Light pollution was not a major obstacle—the eclipsed Moon remained bright enough to stand out even from within the city.

Context and Significance

Lunar eclipses occur when the full Moon passes through Earth’s shadow. Because the alignment was not perfect, a small portion of the Moon stayed outside the umbra, preventing a total eclipse. Still, the depth made this one of the more memorable partial events visible from North America in recent years. The Moon was near its full phase (the Sturgeon Moon), occurring just minutes after greatest eclipse.

For Dubuque viewers along the bluffs and river valley, the combination of clear skies, a well-placed Moon, and the striking color contrast created a memorable late-summer night. Events like this remind us how accessible dramatic celestial phenomena can be—no travel required, just a clear view of the sky and a bit of patience as Earth’s shadow slowly crosses our nearest neighbor.

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