Monday, October 29, 2007

Chilly This Morning; Colder Tuesday Morning

The week is off to a cool start with morning lows in the upper 30s in some spots today --
  • Oxford-Henderson: 36
  • Louisburg: 37
  • Rocky Mount-Wilson: 37
  • Smithfield: 37
  • Raleigh-Durham: 38
  • Southern Pines: 39
  • Chapel Hill: 40
  • Laurinburg-Maxton: 41
  • Fayetteville: 42
  • Goldsboro: 44
  • Lumberton: 44

Tuesday morning will likely be at least a couple degrees cooler than this morning. High pressure over North Carolina will keep skies clear over with light winds. That will bring optimal cooling conditions allowing temperatures to drop to the mid 30s, and many neighborhoods will see their first frost of the season.

Frost can form even if the thermometer measures a temperature above freezing. Most thermometers measure the air temperature a few feet off the ground. On a clear and calm night, the ground can actually cool down very quickly, and the temperature at the ground may be a couple degrees lower than the air a few feet above the ground. So, while our thermometers may read in the mid 30s Tuesday morning, the temperature right at the ground could be around 32 allowing frost to form.

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