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Tuesday, May 29, 2018

Weather Predication Center Advises Heavy Rain May be Possible This Afternoon and Early Evening



The Weather Prediction Center has issued a Mesoscale Precipitation Discussion concerning the potential for heavy rain between now and 8 pm tonight in our region. Some of these storms that develop may be capable of producing 1-2 inches per hour with isolated situations where 3 inches per hour of rainfall may be possible.


Please be careful if you're out dring when one of these storms comes through our area. Remember to turn on your headlights so other motorists can see, especially if you're in one of those cars that are colored so it is hard to see. 
Also, slow down and increase your following distance from the motorists in front of you so you have more time to react if they hydroplane or get involved in an accident.


If you encounter a roadway that is covered in water, please avoid driving on it because it may have been washed away. Remeber to "Turn Around, Don't Drown."









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A copy of the discussion is posted below for your convenience.




Mesoscale Precipitation Discussion 0225
NWS Weather Prediction Center College Ppark MD
227 pm edt tue may 29 2018

Areas affected......Northeast GA/western SC/western NC...

Concerning...Heavy rainfall...Flash flooding possible

Valid 291830z - 300030z

Summary...Heavy showers and a few thunderstorms expected this Afternoon with high rain rates of 1-2 inches per hour over a short Duration...

The satellite and radar data indicates a slowly growing cluster of Showers and a few thunderstorms across Georgia and interior Sections of South and North Carolina.

Moist deep layer southeast flow is advecting deep moisture inland With upslope flow occurring this afternoon into the evening as the Cyclonic circulation of the depression to the west in Alabama Continues.

Coupled upper divergence and boundary layer moisture convergence Combine with an upslope component of flow to support additional Showers/storms through the rest of afternoon into the evening in Northeast ga/western South Carolina and western North Carolina.
Observed and forecast soundings show pockets of 90 percent layer Relative humidity...Favoring efficient rainfall processes.

Clusters of 1-2 inches of rain with isolated 3 inch maxima are Expected where cell mergers occur. This is in line with the 12z Runs of the wrf arw/nmmb/arw 2 runs today.
The 15-17 high res rapid refresh runs indicated isolated 4-inch Totals are possible in western North Carolina.





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Published at 3:05 pm on May 29, 2018




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