Live measured status
Northern line status
We are not measuring the Northern line yet. Baselines need weeks of data before a score means anything, and we would rather show nothing than a number we do not trust.
TfL’s reason: Northern Line: Service will resume later this morning.
Live — last reading . Bank and Charing Cross are measured as the separate routes they are.
The last 24 hours
Tue 3 Nov 03:40:00 → 03:30:00
Higher is better; the hairline is the threshold below which a line stops counting as running normally. A dashed stretch along the bottom is a period we have no score for, and it says which kind. No service is the small hours, when the line is not running. No data is us: either nothing reached us, or — more often — we had nothing to compare that stretch against, because a line TfL has declared disrupted for long enough loses those hours from what we count as normal. Neither is a delay, and we would rather show the hole than draw a line across it.
Declared against measured
Wed 28 Oct → Wed 4 Nov
- Good
- Minor delay
- Delayed
- Severe delay
- Nothing measured, or nothing running
Across this window, for 5 hours TfL declared a good service while we were measuring a real delay; and for 16 hours TfL was reporting disruption that our measurements did not pick up, which is the direction we are likelier to be wrong in. Our band changes only once a condition has held for fifteen minutes, so this is a picture of sustained running rather than every flicker — the chart above is where a short sharp incident still shows. Every other page here asks you to take our word for it; this one is the argument with the evidence attached.
By direction
Towards central London
—
MeasuringNo data
Away from central London
—
MeasuringNo data
One direction can be in trouble while the other runs perfectly, which is exactly what a single line-wide status hides. Platform indicators name the destination rather than the direction — we will too, once the measurement service publishes where each direction ends.