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For 3-7 day hazards see Weather Prediction Center's: WPC 3-7 Day Hazards
U.S. Week-2 Hazards Outlook - Made December 04, 2023 | About the Hazards Outlook
| Categorical Outlooks Day 8-14 |
Experimental Probabilistic Outlooks |
 |
Valid Tuesday December 12, 2023 to Monday December 18, 2023
US Hazards OutlookNWS 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.
Hazards
- 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 12-15.
For Thursday December 07 - Monday December 11: WPC Days 3-7 U.S. Hazards
For Tuesday December 12 - Monday December 18:
Forecaster: Thomas Collow
$$ Please consult local NWS Forecast Offices for short range forecasts and region-specific information.
Resources
Week-2 Probabilistic Extremes Tool
GFS Ensemble Forecasts