Frost / Freeze Information

The National Weather Service office in Bismarck will stop issuing

Frost Advisories after Wednesday, September 30th...but will continue

to issue Freeze Watches and Freeze Warnings for western and central

North Dakota through October 15...which marks the end of the local

growing season...or until a hard freeze has been observed across

the area, whichever occurs first. A hard freeze is defined as temperatures

of 28 degrees Fahrenheit or lower, for a period of 3 or more hours.

 

A Freeze Watch will be considered appropriate when there is the

potential for temperatures to be 32 degrees or below for greater

than one hour over a geographically significant area during

the next 12 to 48 hours.

 

A Freeze Warning will be issued when the temperature is expected to

be 32 degrees or below for greater than one hour over a geographically

significant area during the next 24 hours. Significant damage to vegetation

is possible as a result of these conditions.



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