Thunderstorms trying to form northeast of Tulsa! Been a while since I've seen towering clouds like this. Spring has Sprung! Pic from David Williams of Tulsa.
Here's the latest visible sat pic showing bands of cumulus clouds developing along and ahead of a cold front pushing into eastern Oklahoma. I think at least scattered t'storms will develop along the boundary in eastern Oklahoma this evening with some severe weather possible in far eastern and southeastern Oklahoma. Main threats large hail, damaging winds, lightning and locally heavy rainfall. The next pic is the latest severe weather risk for this evening showing much of far eastern Oklahoma under a slight risk for severe thunderstorms. The orange shade is an enhanced slight risk area which is the highest threat within the slight risk.
Tomorrow another upper wave moves in pushing another cold front into Oklahoma Wednesday evening. Thunderstorms will form along this next cold front from near a Lawton to OKC to Tulsa line between 4pm - 6pm and then track east into eastern and southeastern Oklahoma. There is a slight risk for severe weather over portions of central, eastern and southeastern Oklahoma Wednesday evening / night as the front moves east across the area. Within the slight risk area the orange shade shows an enhanced slight risk area which again is where we think the greatest risk for severe weather will be located. Right now it appears the most likely area for concentrated severe weather is going to set up just south and southeast of OKC across south central and southeastern Oklahoma.
The tornado threat is generally low with this situation but I can't rule out a small brief tornado or two before the thunderstorms evolve into line segments or a squall line. The most like area for this low threat of a brief tornado is in the enhanced slight risk region to the south and southeast of OKC. Otherwise, the main threats are large hail, damaging winds, lightning and heavy rainfall.