Valid Tuesday December 12, 2023 to Monday December 18, 2023
US Hazards Outlook NWS Climate Prediction Center College Park MD 300 PM
EST December 04 2023
Synopsis: Mid-level low pressure is forecast
to lift out of the eastern contiguous U.S. (CONUS) at the start of week-2.
While most of the associated precipitation is forecast to occur during the late
week-1 timeframe, some lingering rainfall may persist into the start of week-2
across the Florida Peninsula. On the backside of the mid-level low, high winds
are possible across portions of the Great Lakes and Northeast early in the
period, with an elevated potential for Lake Effect Snow over some areas. Later
in week-2, mid-level high pressure is forecast to bring more tranquil weather
to the central and eastern CONUS. Models depict differing pattern evolutions
across western North America resulting in a less confident forecast, with the
best agreement over southeastern Alaska where strong onshore flow and resultant
episodes of heavy precipitation and high winds remain favored.
Slight risk of heavy snow downwind of Lakes
Superior, Michigan, Erie, and Ontario, Tue-Wed, Dec 12-13.
Slight risk of high winds for portions of the Great Lakes and Northeast,
Tue-Wed, Dec 12-13.
Slight risk of heavy precipitation for portions of Southeast Alaska,
Tue-Fri, Dec 12-15.
Slight risk of high winds for portions of Southeast Alaska, Tue-Fri, Dec