Flash Flood Watch is now up for the area mainly south of U.S. 24.
...FLASH FLOOD WATCH IN EFFECT FROM SATURDAY MORNING THROUGH
The National Weather Service in Indianapolis has issued a
* Flash Flood Watch for portions of central Indiana, east
central Indiana, north central Indiana, south central Indiana,
southeast Indiana, southwest Indiana, and west central
Indiana, including the following areas, in central Indiana,
Bartholomew, Boone, Clinton, Decatur, Hamilton, Hancock,
Hendricks, Howard, Johnson, Madison, Marion, Morgan, Rush,
Shelby, and Tipton. In east central Indiana, Delaware, Henry,
and Randolph. In north central Indiana, Carroll. In south
central Indiana, Brown, Jackson, Lawrence, and Monroe. In
southeast Indiana, Jennings. In southwest Indiana, Daviess,
Greene, Knox, Martin, and Sullivan. In west central Indiana,
Clay, Fountain, Montgomery, Owen, Parke, Putnam, Tippecanoe,
Vermillion, Vigo, and Warren.
* From Saturday morning through Sunday evening
* Showers are likely on Friday, with widespread showers expected
Saturday into Sunday. The rain could be heavy at times,
especially Saturday into Sunday. The rain on Friday will help
saturate the ground, so that the weekend rain could lead to
* There remains some uncertainty on exactly where the heaviest
rain will fall. Stay tuned for later updates on this developing
Surface & low-level flow is from the northeast, while storms along frontal boundary are moving from southwest to northeast. Above that, flow courtesy of Gordon is from the southeast. There is also a low level & surface wind shief along that front from northeast to south & southwest.
Bottom line is that there is a lot of vorticity & shear in a tropical airmass with temperatures in the 80s & dew points in the 70s. Cloud bases are low.
This result in the potential of a few isolated funnels to even landspout tornadoes this evening from any showers & storms that pass through. This could result in a random Tornado Warning seemingly out of no where.
Landspout tornadoes tend to be short-lived with a very width. They also tend to be weak with EF0 to low-end EF1 strength.
The Non-Supercell Tornado Index is quite elevated from central Illinois to Indiana at the moment & will continue to shift northward. Also not the elevated numbers near the center & east of the center of Gordon (in Arkansas).