A thin lid on the Clyde

Clydebank, Wednesday 7 October 2026

Just before 7 am the river bank was already under a flat layer of mist. The sky above it was open. A couple of points of light were still visible. On the far side, street lights showed through the bank of fog.

A flat band of mist on the Clyde, with lights showing through and a clear sky above
The layer sitting on the river bank. Clear air above it.

Further along, trees on a spit stood half in the mist and half out. A navigation light was clear of the layer, with a long reflection on the water.

Trees and a green navigation light standing out of the mist, reflected in the Clyde
Trees and the navigation light, both reflected.

Upstream, the Titan crane at Clydebank was the marker. In one frame it was sitting in the mist. A little later it stood clear of the layer, with a pink edge on the horizon and its reflection on the water.

The Titan crane at Clydebank sitting in river mist at dawn
The Titan crane in the mist.
The Titan crane standing clear above a flat layer of mist on the Clyde
The same crane, clear of the layer.

Mist like this is what a shallow lid can hold in place. The mist stays on the river. The air above it is clear enough to see through.

What Lid said

Clydebank, 06:54, in Lid:

  • 56%, Possible: a thin lid the forecast cannot quite see.
  • No warmer air overhead in the model yet. With a clear sky, light wind and this hour of the night, a lid often forms too low for the forecast to draw.
  • Best now, clear by 9 am.
  • If one formed, Lid expected it to top out near 110 m. About 160 m above this place you would be looking down on it.
  • Lid also said cloud looked likely, so it could be a cloud deck rather than a clear view from above.
  • Nearest high point: Cochno Hill, 348 m, about 5.6 km to the north.
Lid app showing Clydebank at 56 percent, a thin lid the forecast cannot quite see
Lid, Clydebank, 06:54. 56%, Possible.

What Transparency said

Transparency at 07:00 matched the pictures. Haze clear. Smoke clear. Dust clear. Thin high cloud clear. Humidity wet, 92%. Its Lid tile showed a possible lid at 45%, strongest around 02:00, with wind and the mixing height doing most of the telling. That is a different reading from the 56% above, so the two figures differ.

Transparency app at 07:00 showing humidity at 92 percent and a possible lid
Transparency, 07:00. Humidity wet, 92%.

Forecast against result

The forecast was unsure, and said so. The river still had the mist.

A little later it was moving. The layer had dropped onto the water and was drifting downstream, past the navigation light.

Mist drifting downstream on the Clyde past a green navigation light
The mist moving downstream.

It is a forecast, not a guarantee. This morning it was close enough to walk out and see.

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