PERIODS OF RAIN THROUGH WEDNESDAY
FLOOD WATCH IN EFFECT, RAIN TOTALS BETWEEN 1-2"
FLASH FLOODING UNLIKELY, SMALL STREAM/RIVER FLOODING POSSIBLE
COOLER AND DRIER LATER IN THE WEEK
Tonight: Rain likely. Heaviest rain near and east of I-81. Patchy fog. Lows 47-53. South wind 10 mph or less.
Wednesday: Morning rain. Scattered showers in the afternoon. Breezy. Highs 53-59. Southwest wind 5-20 mph.
Wednesday Night: A few showers possible early. Flurries possible in the higher elevations. Lows 29-33. NW/N wind 5-10.
Thursday: Colder. Mix of sun/clouds. Highs 42-45. N wind 5-10.
A cold front is slowing moving through the southern Appalachians region. As this front continues its slow journey, a few weather disturbances will ride along it. The moisture and lift with these systems will be enough to produce some on and off, light to moderate rain showers.
This front finally picks up steam tonight and early Wednesday, as another system kicks it east. With this second system, we'll see another round of rain before a rush of cooler air. Some of the showers we see, especially tonight and early Wednesday, may be heavy. Downpours are most likely near and east of I-81.
With the rain over the next few days, we may face some issues on the roadways, in which ponding can lead to hydroplaning. Runoff may also become an issue. While flash flooding isn't likely, areas that see more rain may see some stream/creek/ flooding develop through Wednesday. That's why a Flood Watch is in effect for east Tennessee and southwest Virginia through Wednesday morning. Be alert for rising water in flood prone areas. One area to watch is the Clinch River near Speers Ferry, which is forecast to get near flood stage by Wednesday. Rain totals may amount anywhere from 1-2" (locally more) between now and Wednesday afternoon.
As the colder air rushes in, a few flurries are possible Wednesday night and Thursday morning, especially in the mountains (a very light accumulation is possible across the highest elevations Thursday morning).
Afterwards, the weather looks cooler and mostly rain-free from Thursday through Sunday. High and low temperatures will return to more seasonable levels during that time. A stray shower and more clouds come into the forecast on Monday with warmer temperatures as well.
Temperature Outlook: Highs in the mid/upper 50s Wednesday, 40s Thursday, upper 40s/lower 50s Friday, and 50s Saturday through Monday. Lows in the upper 40s/lower 50s tonight, 30s Wednesday night, 20s Thursday through Saturday night, and near freezing Sunday night.
Our average high is 52°, low 31°.
Meteorologist Dave Dierks