National Weather Service predicts first killing frost of autumn tonight

From Staff Reports

Oct. 27, 2008 - Garderners and other lovers of flora should take extra precautions with delicate plants tonight as the National Weather Service is predicting the first freeze of autumn.

A freeze advisory for the northern and western parts of North Texas was issued this morning by the weather service office in Fort Worth and specifically warns the air temperature could drop to 32 degrees or less between 4 a.m. and 8 a.m. Tuesday.

The warning means that freezing or sub-freezing temperatures are likely to occur. These conditions will kill sensitive plants, and residents are advised to protect tender vegetation. Automatic sprinkler systems should also be turned off to avoid creating ice patches on roads, driveways and sidewalks.

Polar high pressure from Western Canada is expected to settle in early Tuesday morning across North Texas, including Sulphur Springs and all of Hopkins County. This air mass will be very dry and able to radiate efficiently under the anticipated cloud and wind conditions.

"Near calm winds and clear skies will create a favorable environment for temperatures late tonight to fall to or below freezing for a few hours early Tuesday morning around sunrise," the warning states. "Protected rural areas near river valleys and typical low-lying areas will especially get cold, as these areas tend to be the most protected from wind at night."

The warning will expire Tuesday morning. Overnight lows Tuesday night are expected to be near 40 and above 50 degrees for the rest of the week.

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