19–21 August 2020 · 2019-20 season · named by Met Eireann · Ireland, Wales, England
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 |
|---|---|
| White Barrow | 112.6 |
| Allenby | 100.4 |
| Mickleden Middle Fell Farm | 91.2 |
| Honister | 90.0 |
| Ennerdale Black Sail | 87.8 |
| Seathwaite Farm | 85.0 |
| Demings Moss | 81.4 |
| Holne Priddons Farm | 80.5 |
| Vowchurch | 75.6 |
| Dale Head | 75.2 |
| Thirlmere St Johns Beck | 73.4 |
| Wet Sleddale | 72.8 |
| Station | Peak | % of warning |
|---|---|---|
| Mansfield The Dykes · River Maun | 3.13 m | 313% |
| Portmarsh Lane · Coney Gut | 1.51 m | 301% |
| Wensor Bridge, Shelton · River Devon | 4.67 m | 274% |
| Prestbury Road · Wymans Brook | 0.11 m | 218% |
| Brookhouse Farm · Ford Green Brook | 2.07 m | 218% |
| Perry Park · River Tame | 1.75 m | 202% |
| Ashford in the Water · River Wye | 1.51 m | 201% |
| Calthorpe Park · River Rea | 0.81 m | 194% |
| Whitewater Bridge · River Maun | 1.43 m | 179% |
| Bacons End · River Cole | 0.66 m | 171% |
| Bescot · River Tame | 2.08 m | 166% |
| Little Alne · River Alne | 2.19 m | 165% |
Gauge records cover 18–22 August 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.
