City Creek Nature Notes – Salt Lake City

February 18, 2017

February 18th

Filed under: Colors, Light — canopus56 @ 6:56 pm

Orange Light

3:00 p.m. Last night, it rained continuously, and today is overcast. On February 6th, I noted a beautiful orange diffuse glow that flooded the canyon for about fifteen seconds near sunset. On the evening of February 16th, while I am driving around the valley floor near sunset, the orange glow reappears, and I see its cause. A low cloud bank hung over the valley with clear skies to the far west. The clouds were banded, that is they was long north-south running parallel bands generated by gravity waves. From each band, streamers of vapor hung in vertical curtains. The curtains were not falling rain; they were held in a temporary state between being cloud vapor and falling rain. The sun set under the cloud layer and streamed through the series of hanging curtains, and this generated the diffuse magical orange glow that lasted for about thirty seconds.

In Thoreau’s “Journal” on February 18th, 1854, he observes that leaves that have spent the winter under snow are brown on the topside but white on the underside.

On February 18th, 1910, the City public grounds committee considered a request to expand a gravel pit in City Creek Canyon by adding an asphalt plant (Deseret Evening News). On February 18th, 1894, City Waterworks Superintendent Daniel S. Griffin recommended the abandonment of 1.5 miles of wooden channel in City Creek between the High Line station and Capitol Hill and the replacement of the wooden channel with iron pipe (Salt Lake Herald). No water is supplied north of Ninth Avenue. City Creek Canyon supplies about 7.9 million gallons of water each day to the city.

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