foreglow

• fore-glow, fore glow

From fore- +‎ glow.

foreglow (plural foreglows)

1. The glow of light appearing in the sky preceding sunrise.
   • 1850, History, Harper's Magazine‎^[1], Harper & Row, page 702:

     He promised fair things and, when another morning came, set forth in the first rosy foreglow of dawn through a dew-soaked world to his new work.

   • 1894, The Gentleman's Magazine:

     But glorious, and educating, and inspiring as is the sunrise in itself in many cases, there is occasionally something very remarkable that is connected with it. Rare is it, but how charming when, witnessed, though till very' recently it was all but unexplained. This is the foreglow. It is in no respects so splendid as the afterglows succeeding sunset; but because of its rarity, its beauty is enhanced.

   • 1905, John Gordon M'Pherson, Meteorology or Weather Explained‎^[2], T.C. and E.C. Jack, page 65:

     Little attention has been paid to foreglows compared with afterglows, either with regard to their natural beauty or their weather forecasting.

• afterglow

• alpenglow
• forelight