ground frost

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ground frost

[′grau̇nd ‚frȯst]
(meteorology)
In British usage, a freezing condition injurious to vegetation, which is considered to have occurred when a minimum thermometer exposed to the sky at a point just above a grass surface records a temperature (grass temperature) of 30.4°F (-0.9°C) or below.
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References in periodicals archive ?
Surprisingly, despite this February's bright sunshine, there were 20 ground frosts during the month, with only nine nights frost-free - the highest incidence of February ground frost in the city since 1996.
We are beginning to get occasional ground frosts now.
Brian Gaze, of The Weather Oumgr o Outlook, said: "A polar plume means very chilly nights and ground frosts, with a chance of 0degC in parts of the North.
On Thursday night into Friday it could get down to as low as -10C in some places with hard ground frosts.
And the Bank Holiday weekend looks no better with falling temperatures and the far North seeing the first ground frosts of the season.
There was the highest number of ground frosts since 1997.
Extremes of temperature marked the main trend for the month, with two ground frosts, more than in 2004, when there was one, and 2003, when there were none.
But the nights were colder, with 18 ground frosts recorded.
Forecasters are even predicting ground frosts for the week ahead as cold fronts across the country bring rain and gales.
Paul said over the next week, the weather would remain a few degrees above average for the time of year, but with the potential of ground frosts in the mornings.
A BRACE of inspections will take place today but a Met Office spokesman said yesterday that the days of worrying about ground frosts could soon be over.
Watering is ongoing in an attempt to make the most of the warm soil temperatures to keep a flush growth of grass before the hard ground frosts inevitably arrive and to ease the going after a relatively dry year.