26–27 December 2020 · 2020-21 season · named by Met Office · England, Wales, Scotland
Red/amber rings mark rivers that reached or came close to their own high level during the storm — the most direct evidence of likely flooding (the gauge measures the river, not any one property). Solid dots mark each flood area's reference point, coloured by the most severe warning raised there — a warning means flooding was expected. Shaded shapes are the Environment Agency's recorded flood outlines: land actually observed flooded, published retrospectively (updated quarterly). England data only.
| Gauge | Total mm |
|---|---|
| Honister | 123.0 |
| Ennerdale Black Sail | 106.6 |
| Seathwaite Farm | 97.8 |
| Mickleden Middle Fell Farm | 90.4 |
| Kinsford Gate | 85.0 |
| Burnbanks | 79.0 |
| Bellever Dartmoor | 75.7 |
| White Barrow | 73.9 |
| Dartmoor | 71.1 |
| St Clether | 69.0 |
| Holne Priddons Farm | 68.9 |
| Garrigill Noonstones Hill | 68.6 |
| Station | Peak | % of warning |
|---|---|---|
| Bodiam Avenue · Daniels Brook | 0.58 m | 360% |
| Rodbourne · Gauze Brook | 1.24 m | 352% |
| Castle Foregate · Bagley Brook | 1.47 m | 341% |
| Leighton Buzzard · River Ouzel | 1.09 m | 333% |
| Crew Green · River Severn | 16.96 m | 326% |
| Todmorden Millwood · River Calder | 2.45 m | 325% |
| Skipton Eller Beck · Eller Beck | 2.42 m | 322% |
| Broom · River Arrow | 1.54 m | 316% |
| Shipston · River Stour | 3.05 m | 315% |
| Middlesbrough Albert Park Footbridge · Marton West Beck | 0.48 m | 312% |
| Worksop · River Ryton | 3.26 m | 311% |
| Olney · River Great Ouse | 1.14 m | 306% |
Gauge records cover 25–28 December 2020 (the storm window ± a day). Frozen 3 Jul 2026.
FloodRadar compiles Environment Agency warning history, gauge data and public reporting. It is not an emergency service and does not replace official flood warnings — always follow official guidance during a storm.
