Supercells Primed to Erupt with Baseball Hail, 80 MPH Gusts Near Omaha — SevereWX

Supercells Primed to Erupt with Baseball Hail, 80 MPH Gusts Near Omaha

Storm chasers and residents near Omaha should brace for action. The Storm Prediction Center's latest Mesoscale Discussion (MD 1471) flags rapidly increasing severe thunderstorm potential across portions of southeast Nebraska, southwest Iowa, and far northeast Kansas.

Strong destabilization is underway near modifying outflow from earlier storms, fueling a band of midlevel cumulus clouds. This signals steep lapse rates and massive instability—nearly 4000 J/kg MUCAPE per the 18Z Omaha sounding—with supercell-friendly wind profiles in place. Capping is weakening amid rising ascent, setting the stage for isolated to scattered storms by 5-6 PM CDT (22-23Z).

Initial supercells could pack very large hail near baseball size (2.5 inches) and damaging gusts to 80 mph. Evening upscale growth via storm clustering might amplify wind threats further. While exact initiation timing holds some uncertainty, SPC pegs the odds of a Severe Thunderstorm Watch at 80% within the next 1-2 hours.

Peak hazards include:

This setup echoes recent Mid-MO Valley volatility but centers on high-end discrete storm modes. Track updates via SPC and local NWS offices (OAX, DMX, EAX).

Stay prepared: Review your severe weather plan, ensure mobile alerts are on, and seek shelter if storms approach. Safety first as these beasts could spin up fast.