Frost lines are critical to construction in cold climates, but they’re important in mild regions, too. Learn what frost lines ...

TOM: IT WAS A COLD MORNING ACROSS THE STATE OF MARYLAND. YOU CAN SEE LOTS OF 30’S ON OUR LOW TEMPERATURE MAP AND FREEZING ALL ... AND NORTH FLORIDA IS UNDER A FROST ADVISORY OVER TO JACKSONVILLE.

The National Weather Service has just posted frost advisories (blue area on the map) for all of Central Maryland between 2 a.m. and 9 a.m. Tuesday morning. With clear skies ahead, temperatures are ...