UNITED STATES — A cluster of isolated supercells across Northern Oklahoma, including areas near Seiling, Fairview, Perry, and just north of Oklahoma City, is drawing attention tonight. While radar imagery shows organized storms with lightning and pockets of rotation, the overall setup suggests hail is the primary concern, not tornadoes.
Surface Inversion Keeping Storms Elevated
Latest data indicates these supercells are elevated above a cooler surface layer, meaning they are feeding on warmer air just above ground level rather than pulling energy directly from the surface. This setup is known as a surface inversion, and it’s playing a major role in limiting the tornado threat.
Temperatures near the surface across northern and central Oklahoma remain relatively cool, while warmer air sits just above. That contrast creates a stable layer near the ground, preventing storms from fully tapping into surface-based instability.
Forecasters note the inversion is “quite tall,” but not unusual in these relatively dry environments.
Radar Highlights: Seiling to Perry Corridor
High-resolution radar imagery shows:
- A strong storm west of Seiling, producing frequent lightning.
- Another organized cell near Perry, northeast of Oklahoma City.
- Reflectivity signatures indicating heavy rain cores and potential hail.
- Local wind observations near storms showing gusts into the 40–60 mph range in spots.
Storm motion vectors and mid-level rotation are present, but they remain elevated — meaning any spin is occurring well above the surface.
Sounding Data: Why Tornadoes Are Unlikely
Atmospheric soundings from the HRRR model reveal:
- Limited surface-based CAPE (Convective Available Potential Energy).
- A stable boundary layer suppressing low-level updraft stretching.
- Weak effective-layer tornado parameters.
- Hail parameters more favorable than tornadic signatures.
The combination of elevated instability and weak low-level shear reduces the chance of a surface-based tornado forming tonight…