Oklahoma's Unstable Air Mass readies 80 MPH Wind Clusters — SevereWX
An unstable air mass loaded with mid-60s dewpoints and nearing 2000 J/kg MLCAPE is setting the stage for scattered storm development across much of northern into central Oklahoma this afternoon.
The SPC's Mesoscale Discussion 1588 highlights clusters firing up after 4 PM CDT (21Z), driven by an MCV nudging southeastward across northwest Oklahoma and a quasi-stationary boundary draped near the Oklahoma-Kansas line. Strong surface heating and convergence along these features are building robust cumulus fields, primed to erupt into thunderstorms.
Weak shear means slow-storm motions with a southward tilt, but veering winds aloft and hefty PWATs could fuel potent downdrafts. Expect locally damaging gusts of 65-80 mph—potentially topping 70 mph in stronger cells—along with brief marginal hail up to 1.25 inches. The action peaks through late afternoon into early evening.
A 60% probability of watch issuance underscores the setup's severity. Northern and central Oklahoma residents should monitor radar closely as these storms pulse to life.
Preparedness: Secure outdoor items, avoid flooded roads, and have multiple alert sources ready. Know your safe spot indoors away from windows.