Short Range Weather Forecast
Dangerous Wind Chill in the North
A strong arctic front and associated gusty winds will produce bitter wind chills as cold as -50 or colder from the Upper Midwest to the Northeast. Chilly temperatures and gusty winds extend across the Mid-Atlantic. Lower elevation rain and mountain snow from a weak system in the west will be followed by a stronger system this weekend with heavy mountain snow.
...Temperatures will be 15 to 35 degrees below average over parts of the Upper Mississippi Valley, Great Lakes, Ohio Valley, and the Northeast...
...Lake-effect snow downwind from the Great Lakes...
...Snow over parts of the Cascades, Sierra Nevada Mountains, and the Northern Rockies...
Cold high pressure over the Upper Mississippi Valley will move eastward to the Mid-Atlantic by Saturday and off the East Coast by Sunday. The associated cold air will produce temperatures 15 to 35 degrees below average over parts of the Upper Mississippi Valley, Great Lakes, Ohio Valley, and the Northeast through Sunday. Therefore, wind Chill Warnings and Wind Chill Advisories are posted from the Dakotas eastward to New England. Temperatures will begin to moderate over the Northern Plains/Upper Mississippi Valley by Sunday.
On the leading edge of the cold air will be a cold front extending from the Mid-Atlantic to the Lower Mississippi Valley and the Southern Plains will move eastward off most of the Eastern Seaboard by Friday evening.
Meanwhile, upper-level energy over the Great Lakes and the Northeast will aid in producing lake-effect snow downwind from the Great Lakes through late Saturday night. Furthermore, a wave of low pressure over a second front over Florida will slowly move southward over the peninsula to southeastern Florida by Saturday. The low will produce showers and thunderstorms over parts of the Southeast through late Friday night.
Moreover, a warm front over parts of the Northern/Central Plains will move into the Great Lakes by Saturday morning. The energy associated with the front will produce light snow over the Upper Great Lakes early Saturday morning through Sunday. In addition, light snow will develop over parts of the Upper Mississippi Valley on Sunday morning.
In the meantime, upper-level energy will move onshore over the Pacific Northwest and eastward to the Great Lakes/Ohio valley by Sunday. The energy will produce coastal rain starting by Friday afternoon over parts of the Northwest and Northern/Central California. Light snow will also develop over parts of the higher elevations of Northern California. Overnight Friday, light snow will develop over parts of the Northern Intermountain Region and Northern Rockies. By Saturday morning, the rain and higher-elevation snow will end over California. However, light rain and higher-elevation snow will develop over parts of California and the Pacific Northwest by Saturday night, expanding into the Great Basin by Sunday Morning. The snow will become heavy over the Sierra Nevada Mountains. The snow will result in reduced visibility and hazardous driving conditions.