Rain band

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(Meteorol.) a dark band in the yellow portion of the solar spectrum near the sodium line, caused by the presence of watery vapor in the atmosphere, and hence sometimes used in weather predictions.

See also: Rain

References in periodicals archive ?
Christmas Day will be mild, but heavy rain in northern England and southern Scotland has the chance of snow, with a rain band moving across the rest of the UK later in the day.
We've not had much today and it's due to be largely dry tomorrow, but there's a rain band on Wednesday.
Tomorrow, we will see outbreaks of rain as the rain band will be pushed further north.
There is some uncertainty over the exact position and intensity of the rain band, so the alert will be kept under review and updated as necessary.
Lando" had weakened into a tropical storm and moved into the South China Sea this morning, but its huge rain band ensured downpours across swathes of the sodden north where tens of thousands of people were displaced.
Within the general rain band are vigorous storms, which track west.
Much cooler air arrives on Saturday after the rain band - and it gets cooler as the weekend goes on.
When University of Washington scientists examined precipitation records from 1930 to 1990, they found that over that period, the tropical rain band moved southwards.
Typhoon Bopha slammed into the Davao region at dawn, its ferocious winds ripping roofs from homes and its 500-kilometer- (311-mile-) wide rain band flooding low-lying farmland.
Monday night into Tuesday a rain band will move through giving us five or six millimetres, so overall we are looking at up to 10 millimetres before racing starts on Tuesday.
I remember having a short-lived fascination with a Manchester group called the Rain Band who did this kind of thing.
Obviously if we got an unannounced rain band we'd be in trouble but at the moment we are fine and no further inspection is planned.