Narrative:

Aircraft X was on a 5.5 mile final for runway 12R. I instructed aircraft Y heavy to line up and wait while a previous aircraft exited the runway. At a 2.5 mile final I cleared aircraft Y heavy for takeoff and told the pilots traffic is at 2.5 mile final. Next; I went back and cleared aircraft X to land. We are ILS critical so I had to withhold the landing clearance until I cleared aircraft Y heavy. Aircraft Y heavy was slower to roll than expected and I instructed aircraft X to go-around; climb and maintain 3000; and turn right heading 140 degrees. I waited for a response and did not receive one. The ceilings and visibility were very low. Aircraft X broke out of the clouds right over the approach end and continued to touchdown on the runway. Aircraft Y heavy was more than 6000 feet down the runway but the aircraft wheels were not all the way off the pavement.what led to the event was aircraft Y heavy taking longer than normal to roll and aircraft X not following instructions to go-around.

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Original NASA ASRS Text

Title: MSP Tower Controller reported a runway incursion which reporter attributed to a late rolling heavy jet departure and an arrival.

Narrative: Aircraft X was on a 5.5 mile final for Runway 12R. I instructed Aircraft Y heavy to line up and wait while a previous aircraft exited the runway. At a 2.5 mile final I cleared Aircraft Y heavy for takeoff and told the pilots traffic is at 2.5 mile final. Next; I went back and cleared Aircraft X to land. We are ILS critical so I had to withhold the landing clearance until I cleared Aircraft Y heavy. Aircraft Y heavy was slower to roll than expected and I instructed Aircraft X to go-around; climb and maintain 3000; and turn right heading 140 degrees. I waited for a response and did not receive one. The ceilings and visibility were very low. Aircraft X broke out of the clouds right over the approach end and continued to touchdown on the runway. Aircraft Y heavy was more than 6000 feet down the runway but the aircraft wheels were not all the way off the pavement.What led to the event was Aircraft Y heavy taking longer than normal to roll and Aircraft X not following instructions to go-around.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.