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.
When something significant is happening, a strip under the menu on the homepage says so: a named storm, an amber or red Met Office warning, the Flood Guidance Statement at medium or high risk, or a Severe Flood Warning. The most serious leads, and each links straight to its details. It says when the warnings were last checked, folds down to one line, and is not shown on a quiet day.
The homepage map, Radar & Sat and Satellite now show lightning from the Met Office's ground network by default, as rings coloured by age that stay on the map for an hour, so a storm's track is easy to follow. EUMETSAT's satellite lightning is still in each map's settings.
On a phone, the key panel on the main map pages is now a slim title bar under the menu, which leaves more of the map showing. Folding the bottom panel, on any screen, keeps the play button, the time slider and the date, and hides the drop-downs, so you can still scrub the timeline.
Ask about this page or the wider UK picture. Answers come from the site's data; check anything that matters.
Questions and answers may be read by people to improve the replies. How Bert works.
Town forecasts: ECMWF IFS and Met Office UKV via
Open-Meteo open data;
places from GeoNames. Both
CC BY 4.0.
Please do not include personal or sensitive information.
info
About Flood Forecast
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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