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Archive Cat 2 · Moderate

Storm Brendan

13–14 January 2020 · 2019-20 season · named by Met Eireann · Ireland, Scotland, England, Wales

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80 mphmax gust
208flood warnings & alerts (England)
Brought gales and heavy rain across Ireland and Britain with ~100,000 power outages; coastal and some surface-water flooding but limited river flooding.

Flood footprintEnvironment Agency warning history, England · storm total

0severe warnings
34flood warnings
174flood alerts
176areas
89counties
121rivers & seas

Counted from the Environment Agency's warning record for England (12–14 January 2020). Welsh warnings are held in a separate record and are not counted here, and FloodRadar only began recording Scottish warnings on 16 September 2026 because SEPA publishes no archive. So this is England's share of the storm, not its total.

Worst-hit areas

  • Christchurch Harbour3
  • Mersey Estuary at Warrington3
  • Tidal Thames riverside from Putney Bridge to Teddington Weir3
  • Coast at North Morecambe Bay2
  • Coast from Gretna to Silloth2
  • Coast from Silloth to St Bees2

Counties

  • Dorset Council19
  • Devon17
  • Hampshire14
  • Wiltshire13
  • Gloucestershire12
  • West Sussex12

Rivers & seas

  • North Sea25
  • English Channel18
  • Irish Sea8
  • River Thames8
  • South Devon Coast5
  • River Tyne4

Flood mapthe storm's flood footprint

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. An unshaded area means no flood was mapped here, which is not evidence none happened: the Environment Agency mapped only some floods, mapping effort rose sharply after about 2000, and surface-water flooding is largely absent from this record.

The rainstorm-total by gauge

GaugeTotal mm
Colliford 213.4
Kirkby Thore 151.4
Holne Priddons Farm 76.5
Dartmoor 72.4
White Barrow 69.4
Bellever Dartmoor 69.0
West Dunkery 64.8
Bovey Tracey 64.1
Mickleden Middle Fell Farm 60.8
Princetown 60.2
Brotherswater 57.7
Wet Sleddale 57.0

The riverspeak vs warning level

StationPeak% of warning
Rodbourne · Gauze Brook 1.26 m 357%
Crabb Mill · Woodbridge Brook 2.07 m 305%
Bitton · River Boyd 1.20 m 301%
Riseley · River Kym 2.10 m 300%
Worksop · River Ryton 3.03 m 288%
Shipston · River Stour 2.68 m 277%
Killamarsh · River Rother 4.53 m 269%
Wensor Bridge, Shelton · River Devon 4.51 m 265%
Mansfield The Dykes · River Maun 2.64 m 264%
Great Somerford · River Avon 1.80 m 258%
Stanford Bridge · River Teme 3.47 m 254%
Covington · River Kym 1.76 m 251%

Gauge records cover 12–15 January 2020 (the storm window ± a day). Frozen 3 Jul 2026.

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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.