Storm Herminia

26–27 January 2025 · 2024-25 season · named by Meteo-France · England, Ireland

▶ Replay this storm hour by hour the rain, the rivers and the warnings on one clock, and the moments that mattered at your door

83 mphmax gust

309flood warnings & alerts (England)

Following Eowyn, Herminia brought 83mph gusts at Berry Head and power cuts to over 4,500 properties in Devon and Cornwall; its main impact was catastrophic flooding in western France, with UK effects confined to the south-west.

Flood footprintEnvironment Agency warning history, England · storm total

0severe warnings

78flood warnings

231flood alerts

289areas

76counties

207rivers & seas

Counted from the Environment Agency's warning record for England (25–27 January 2025). 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

Burton Trent2
Climping Seafront2
Danes Stream2
Isle of Wight coast2
Lymington River2
Mansbridge and Riverside Park2

Counties

Wiltshire39
Dorset Council38
Somerset34
Devon34
Hampshire30
Gloucestershire22

Rivers & seas

English Channel10
Hampshire River Avon7
River Stour7
Bristol River Avon6
River Thames6
Dorset Frome5

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

Gauge	Total mm
White Barrow	98.7
East Okement	97.8
Dartmoor Fernworthy	92.5
Holne Priddons Farm	90.9
Prewley	89.5
Bellever Dartmoor	86.5
Rainfall station · Devon	83.8
Princetown	82.0
Mickleden Middle Fell Farm	81.6
Downhead	81.3
Seathwaite Tarn	80.6
Rainfall station · Devon	79.4

The riverspeak vs warning level

Station	Peak	% of warning
Prestbury Road · Wymans Brook	0.20 m	400%
Clifton Hall · River Mease	5.56 m	376%
Walkern · River Beane	4.10 m	335%
Shipston · River Stour	3.08 m	318%
Zoons Court · Horsbere Brook	2.58 m	306%
Crabb Mill · Woodbridge Brook	2.00 m	295%
Stanford Bridge · River Teme	3.92 m	287%
Worksop · River Ryton	2.97 m	283%
Tubbs Bottom · Bristol Frome	1.63 m	276%
Stanley · River Marden	2.99 m	271%
Ewyas Harold · Dulas Brook	1.34 m	268%
Pewsey · River Avon	0.49 m	268%

Gauge records cover 25–28 January 2025 (the storm window ± a day). Frozen 3 Jul 2026.

← Storm Eowyn All UK storms Storm Floris →

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.