The front itself would be attached to a low pressure system expected to move through the eastern portion of Canada.
The front was forecast to begin the day stretched from the Central Plains through eastern Canada. It would then progress eastward, ending the day arched from the Appalachians through the Northeast. Substantial precipitation was forecast to fall from the Mid-Atlantic through the Northeast as the front passes the area.
The front was expected to precede cold air that would filter into the Northern Plains and Upper Midwest, keeping afternoon temperatures relatively pleasant.
Areas of scattered precipitation were expected to continue to form in parts of the West, but this precipitation wasn't forecast to be substantial.
A low pressure system was to slide down the West Coast, keeping temperatures mild for much of the West. Coastal clouds were forecast to hang around some areas, allowing the immediate coast to remain cooler.
Warm temperatures were expected from the Southwest through the Southern Plains. Heat advisories were in effect for much of the Southern Plains.
The Northeast was forecast to rise into the 70s and 80s, while the Southeast was to see temperatures in the 90s and some 100s. The Southern Plains was expected to rise into the 90s and 100s, while Southwest was to see similar temperatures. The Northwest was to rise into the 80s and 90s.
Temperatures in the Lower 48 states Friday ranged from a low of 30 degrees at Truckee, Calif., to a high of 116 degrees at Death Valley, Calif.
