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My name is Patrick Moore. I am a Meteorologist with the National Weather Service at the
Greenville – Spartanburg Weather Forecast Office. The following is the weekly impact
weather briefing.
Please note that this routine weekly briefing is for informational purposes only and
will not be updated. Do not use after Wednesday. It will be removed from our website no
later than noon on Wednesday. High impact briefings will be issued as
necessary and supersede the routine briefing.
A strong cold front will move across the western Carolinas and northeast Georgia on
Wednesday afternoon. Thunderstorms may develop ahead of the front
across the Piedmont of the Carolinas, a few of which could be severe, depending on the
amount of instability in the atmosphere. Behind the front, precipitation will change to
snow showers Wednesday night across the mountains of North Carolina, mainly along the
Tennessee border. An accumulation of 1-2 inches is possible in upslope areas.
Wind gusts up to 50 mph are possible at elevations above 3500 feet. The next weather
system may affect the region early next week, but uncertainty is very high.
For the short range, we call your attention to Wednesday in the lower left of the diagram.
Low pressure is expected to move up the Ohio Valley and across the Mid-Atlantic states, which
will push a cold front across the region in the afternoon. High pressure will build in
behind the front on Thursday.
The weather should be quiet over the weekend. The next weather system may move across the
southeast on Monday, 17 March, but this is highly uncertain. Some model guidance shows the
next system moving through toward the middle of next week.
Some strong thunderstorms may develop to the northwest on Tuesday ahead of the front. As
the front moves across the Carolinas on Wednesday, additional thunderstorms may
develop, perhaps in a line. The Storm Prediction Center has not issued a Risk area at this
time. If the instability is great enough, there should be enough shear in the environment
ahead of the front such that a few strong to severe storms would occur. Additional
developments, mainly in terms of the expected instability, will determine if parts of the
region are upgraded to a greater risk. Precipitation amounts ahead of the front will
generally be one quarter to one half inch, mainly Tuesday night and Wednesday.
The mountains along the Tennessee border could see a light accumulation of snow on
Wednesday night.
In summary, the main concern for the week is the passage of a strong cold front on Wednesday
afternoon. Severe thunderstorms are not out of the question east of the mountains, so pay
attention to later developments to see if the risk of severe storms increases.
Precipitation will change to snow showers behind the front across the mountains Wednesday
night, with some accumulation possible in upslope areas along the Tennessee border.
Additional developments, such as the amount of precipitation, will determine if a Winter
Weather Advisory is issued.
For additional information, please visit weather.gov/gsp. For information elsewhere in the
Carolinas, Georgia, and eastern Tennessee please see the following web sites. Thank you
for your attention and have a nice week.