Tracked live by the FAA, but its flight plan was first seen after takeoff, so we don't know the scheduled time and can't say whether it's late.

ENVOY · FLIGHT MQ 4104 LANDED 10:36 AM ET, ~8 MIN LATE · SCHEDULED TIME UNKNOWN

MQ 4104 · ORD → ROC

took off 8:17 AM CT · landed 10:36 AM ET (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 13h after departure

Odds over time

Arrive at ROC more than 15 minutes late?
25% chance · ±0 pts +10 pts · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
WEATHER FORECASTS LIVE IN THE AIR 0% 10% 20% 30% 40% 2.9d 2d 1d 12h 6h Departs Lands