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Archive Cat 3 · Significant

Storm Callum

11–14 October 2018 · 2018-19 season · named by Met Office · Wales, England

76 mphmax gust
198 mmpeak rainfall
168flood warnings & alerts
2UK deaths
One of the most notable extreme rainfall and flood events in south Wales in 50 years: Libanus recorded 198mm in 36 hours and the Tywi, Teifi and Gwili reached record levels, severely flooding Carmarthenshire, Ceredigion and south Powys.

Flood footprintstorm total

0severe warnings
22flood warnings
146flood alerts
116areas
54counties
80rivers & seas

Worst-hit areas

  • Coast at North Morecambe Bay6
  • West Bay Harbour5
  • Dorset coast at Poole Harbour4
  • North Sea coast at Bridlington4
  • Wyre estuary from Fleetwood and Knott End to Little Eccleston4
  • Humber estuary from Spurn Point to Winestead Outfall3

Counties

  • Westmorland and Furness24
  • Lancashire22
  • North Yorkshire22
  • Devon21
  • Cornwall19
  • Cumberland19

Rivers & seas

  • English Channel20
  • South Cornwall Coast13
  • Irish Sea10
  • North Sea8
  • River Wye7
  • Bristol Channel5

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.

The rainstorm-total by gauge

GaugeTotal mm
Seathwaite Farm 187.4
Brotherswater 187.1
Mickleden Middle Fell Farm 185.6
Honister 181.6
High Row 181.6
Dale Head 175.4
Ennerdale Black Sail 171.4
Thirlmere St Johns Beck 162.0
Coniston Coppermines 158.0
Wet Sleddale 156.4
Seathwaite Tarn 154.0
Demings Moss 152.4

The riverspeak vs warning level

StationPeak% of warning
Ferrybridge Fishergate · Wash Dike 0.74 m 349%
Wensor Bridge, Shelton · River Devon 5.59 m 328%
Whitewater Bridge · River Maun 2.32 m 290%
Dutlas · River Teme 1.69 m 282%
Skirfare Bridge · River Skirfare 1.48 m 254%
Marchington · Marchington Brook 2.91 m 242%
John St Darlington · River Skerne 4.04 m 237%
Hindley Wrae Ford · River West Allen 1.25 m 234%
Perry Park · River Tame 2.03 m 234%
Uckfield Mill upstream · River Uck 2.88 m 222%
Ivy Street, Ashton-In-Makerfield · Millingford Brook 3.87 m 220%
Calder Hall · River Calder 1.06 m 205%

Gauge records cover 10–15 October 2018 (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.