Heavy Rainfall Potential In Showers & Downpours In Thunderstorms During Thursday And Friday (August 22-23) Locally Strong Storms Possible
Late Summer 2019_High Knob Massif
An enhanced surge of humid, moisture laden air will interact with an approaching cold front and upper air wave to trigger showers and downpours in thunderstorms during Thursday into Friday. Folks living and driving along streams and within poor drainage, low-lying locations should remain alert for the potential of rapid water level rises and ponding of water.
Gaps within the coverage of heavy rains is the model way of predicting hit-miss action for heaviest amounts, although, a tendency for heaviest rains along & west of the Cumberland Mountains has been a local trend.
Totals between 1.87″ and 2.13″ have, for example, been forecast at the Wise gridpoint during the past two model runs. The latest ECMWF (European) Model is similar to the NAM. Models struggle with timing and amounts associated with convection, such that these graphics and model runs should only be used as a signal for heavy rainfall potential.
Stay tuned to NOAA Weather Radio and your favorite media sources for possible watches and or warnings that may be needed.