Each row is one crossing, not one gauge. A gauge that breached more than one band (e.g. both the 6hr Heavy and Extreme levels on the same peak) gets a row per band. Scans the last 48 hours for the highest total in any window of that length, so a peak from earlier today still shows even if the gauge has since eased off. It is the same window the gauge map's own Thresholds panel uses.
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Data gaps
info Data gaps
Each gauge is checked for how much data it actually reported over the selected window. This filter hides stations missing more than the chosen share of readings, so the table isn't cluttered with unreliable or offline gauges. Gaps are usually caused by temporary faults at the Environment Agency, Natural Resources Wales or SEPA APIs, not by an absence of rainfall. Choose "Show all" to see every gauge regardless of missing data.
info Current view
Showing rolling duration rainfall totals up to now. Sorted by 24h accumulation.
Swipe the table sideways for longer durations. The gauge column stays in place.
Rain gauge observations:
Environment Agency, Natural Resources Wales and SEPA telemetry networks (15-minute totals), Open Government Licence v3.0. Duration totals and threshold exceedances are computed by Flood Forecast from those readings.
Boundaries:
ONS, Open Government Licence v3.0.
Catchments:
National River Flow Archive (2014). Hydrometric areas for Great Britain and Northern Ireland. NERC-Environmental Information Data Centre doi:10.5285/1957166d-7523-44f4-b279-aa5314163237
Catchment boundaries:
National River Flow Archive (2014). NERC Environmental Information Data Centre. doi:10.5285/1957166d.
A new page checks every rain gauge across Great Britain every 15 minutes against its neighbours, the radar and its own recent readings. The map shows rainfall as usual, and any gauge that has had a second look wears a ring: red for likely faulty, amber for uncertain, green for a real shower the neighbours missed. It also picks out blocked gauges that read nothing while it rains all around them. Open a gauge in the list to see why, with its readings beside the radar.
The Flood Forecasting Centre and the Met Office now share one impact matrix, so Flood Guidance Statements use new names: impact runs Minor, Moderate, Significant, Extreme (was Minimal, Minor, Significant, Severe) and likelihood Low, Medium, High, Very high. The colours and overall risk levels are unchanged, and the whole site, archive included, now uses the new names. Weather warnings are now labelled by their colour (Yellow, Amber, Red) rather than Moderate, Severe and Extreme, which are matrix words now.
Sharper isobars that keep their labels when you zoom in
Isobars on the model viewer and the multi-model comparison are now drawn in your browser from the pressure field, so the lines stay thin and every line on screen is labelled with its pressure at any zoom. On the comparison page the slider now carries on past the end of a shorter run, such as UKV's, so the models that still have data can be compared side by side.
This application brings together real-time data from multiple sources to help you stay
informed about weather and flood conditions across the UK.
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Important
This application is unofficial and provided for informational, research, and analysis purposes only. Uptime, data completeness, and real-time accuracy are not guaranteed.
To avoid over-reliance during active weather or flood events, do not make safety-critical decisions using this tool. For official warnings and instructions, consult the primary public services directly:
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