UPDATE: 9:25 p.m.
The National Weather Service has issued a new areal flood warning for the region due to heavy rains that continue to fall throughout Kingsport and the surrounding areas.
The areal flood warning will be in place until midnight and will include all of Sullivan County and Scott County, as well as northeastern Hawkins County.
Forecasters said runoff, coupled with lingering rains, will continue to produce flooding in low-lying areas.
A flash flood warning, which pertains to southern Scott, northeast Hawkins, Sullivan and Washington counties was scheduled to expire at 9:30 p.m.
The NWS-Morristown has now issued a flash flood warning for several counties in Northeast Tennessee and Southwest Virginia.
The warning will be in effect until 9:30 p.m.
Flash flooding has been reported over the Tri-Cities area due to the slow moving over the area. Forecasters said Doppler estimates show as much as 4 inches of rain falling Sullivan County over a three-hour period Wednesday afternoon.
UPDATE: 5:45 p.m.
A significant weather advisory has been extended for portions of Northeast Tennessee and Southwest Virginia as intense summer storms continue to pound the region.
The NWS in Morristown said the advisory will remain in effect for Hawkins, Sullivan and Hancock counties in Tennessee and Scott County in Virginia.
Doppler radar was reportedly tracking a strong storm near Gate City that was moving at 20 mph. Winds gusts up to 40 mph and hail are expected with the storm, as is continued lightning.
Clinchport, Duffield, Mount Carmel and Church Hill are reportedly in the storm's path.
As severe thunderstorm warning that was issued earlier Wednesday for Sullivan and Washington counties in Tennessee was allowed to expire after the storms weakened below severe weather levels.
Despite the expiration, forecasters said residents should still expect additional strong storms to develop in and around Sullivan County.
KINGSPORT -- The threat of severe thunderstorms across the region Wednesday afternoon has caused the National Weather Service in Morristown to issue alerts for portions of Northeast Tennessee and Southwest Virginia.
Forcasters issued a severe thunderstorm warning for Sullivan, Washington and Carter counties until until 5:15 p.m. A significant weather advisory is also in effect for portions of Lee and Wise Counties in Southwest Virginia until 5:30 p.m. Scott County is under a significant weather advisory until 5:30 as well.
An NWS statement said Doppler radar observed thunderstorms capable of producing damaging hail and winds in excess of 60 mph.
The storm is reportedly moving south at 15 mph, with Kingsport, Colonial Heights, Bluff City, Gray and Johnson City in its path.
Weather moving through Southwest Virginia is also capable of producing damaging winds and hail, forecasters said.
The storms are also expected to create continuous cloud to ground lightning.
In addition to the storm warnings, a flood advisory is also in effect until for Sullivan County.
Forecasters said as much as 2 inches of rain has fallen in the county between Bristol and Bluff City, with an additional one to two inches expected throughout the evening.
Excessive runoff from the heavy rain is expected cause elevated water levels in small streams and creeks, as well as ponding on country roads and farmland.