U.S. Severe Weather Forecast (Convective Outlook)

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Day Three

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acus03 kwns 170751 
swody3 
Storm Prediction Center ac 170750 


Day 3 convective outlook 
National Weather Service Storm Prediction Center Norman OK 
0150 am CST Wed Jan 17 2018 


Valid 191200z - 201200z 


..no thunderstorm areas forecast... 


... 
the potential for thunderstorms appears low across the United States 
Friday. 


... 
Between a trough building along the West Coast and a weak ridge 
stretching from Baja California to the Ohio Valley, enhanced 
southwesterly mid-level flow will persist from California to the 
Midwest. In turn, a relatively progressive pattern will continue, 
especially across northern portions of the country. Farther south, a 
pair of weak impulses will partially phase over the central Gulf 
Coast Friday night. 


Across the country, thunderstorm chances appear fairly low through 
the period. A couple lightning strikes may be possible across the 
northern California coast, owing to cold temperatures aloft. 
However, decreasing boundary-layer moisture will limit buoyancy, 
relative to the previous day, likely tempering thunderstorm 
activity. Along the western/central Gulf Coast, weak forcing for 
ascent will continue to yield pockets of elevated buoyancy Friday. 
However, similar to the previous period, forecast buoyancy profiles 
appear too thin/weak to support sustained deep convection. 


.Picca.. 01/17/2018 


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