Flood Alert Issued for Upper Arun Affecting Surrey and West Sussex
This alert is no longer in effect.
Environment Agency issued it on April 6, 2026, 4 months ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
Areazine synthesizes this Environment Agency flood warning directly from Environment Agency's official public data feed. See our methodology for full source attribution and refresh cadence.
The Environment Agency has issued a flood alert for the Upper Arun river area, warning of minor flooding to fields and rural roads following persistent rainfall.
Read this weather record in 30 seconds
- Record type
- Flood Alert
- Affected area
- Surrey and West Sussex
- Issued
- April 6, 2026
- Issuing authority
- Environment Agency
Flood notices turn on location and timing. Treat the named area as this record's scope; do not assume nearby counties, parishes, or waterways were included.
Record status: historical. It was issued 4 months ago; use the issuing agency's live warning service for current conditions in Surrey and West Sussex.
Alert Details
The Environment Agency has issued a Flood Alert (Severity Level 3) for the Upper Arun area. This alert indicates that flooding is possible and residents should remain prepared for potential impacts.
Affected Areas
The alert covers the Upper Arun river catchment within the counties of Surrey and West Sussex. Specific locations mentioned in the advisory include Horsham, Pallingham Lock, and Wanford.
What You Should Do
Residents in Wanford are advised to consider activating any flood protection products they may have. The Environment Agency is currently operating the automatic sluice at Provender Mill to help reduce the overall flood risk. Residents should monitor local water levels and stay informed on weather updates.
Expected Conditions
Persistent rain is expected to continue through the afternoon. While only a small rise in river levels is currently anticipated, minor flood impacts are likely to affect fields and rural roads. Following the current rainfall, isolated showers are forecast for Monday and Tuesday, which should allow river levels to begin returning toward normal. However, widespread rain is forecast for Wednesday, which may cause flood risks to return. Unsettled weather is expected to persist throughout the remainder of February.
Timeline
The alert was officially raised at 1:08 PM on February 15, 2026. Persistent rain is forecast to continue until 5:00 PM on February 15. River levels are expected to peak and begin falling in Horsham by 4:00 AM on February 16, while levels near Pallingham Lock are not expected to peak until 8:00 PM on February 16. The Environment Agency will provide an update on this situation by 8:00 PM on February 16, 2026.
Original source: Environment Agency Official Notice ↗
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