Baseball Hail Cores, 80 MPH Downdrafts Brewing in Omaha Metro Supercells — SevereWX

Baseball Hail Cores, 80 MPH Downdrafts Brewing in Omaha Metro Supercells

The Storm Prediction Center's latest Mesoscale Discussion (1471) flags a rapidly destabilizing setup over southeast Nebraska, southwest Iowa, and far northeast Kansas. Strong heating and leftover outflow from earlier storms have cranked up instability to near 4000 J/kg MUCAPE, per the 18Z Omaha sounding. Midlevel cumulus is already congealing, signaling steep lapse rates and eroding inhibition.

Storms look primed to spark between 5-6 PM CDT (22-23Z), kicking off with isolated supercells capable of very large hail up to 2.5 inches—think baseballs pummeling vehicles and roofs. Supercell wind profiles are in place, supporting structured updrafts that could spit out damaging gusts to 80 mph. As evening progresses, any storm clustering might upscale into a line, ramping up the wind threat further through cold pool consolidation.

A severe thunderstorm watch is 80% likely within 1-2 hours, covering this mid-MO Valley hot spot. Peak hazards: 1.5-2.5 inch hail, 65-80 mph winds, and EF2-level tornado potential to 90 mph.

Stay prepared: Monitor radar closely, secure outdoor items, and have a severe weather plan ready—shelter away from windows if storms intensify. Check SPC's site for updates.