The River Severn from Trehelig to Llyn Coed-y-Dinas, including Welshpool Mid Wales Airport and the A490.
See below for historical flood warnings, or use the live map to check the latest warnings across the UK.
The red highlighted area on the map below outlines the area covered by this Flood Warning.
Number of historic Flood Warnings that have previously been recorded for this area.
North
River levels are rising. Flooding to property is expected. Flooding of low-lying land and roads is ongoing. Impacts are expected to occur 05:00 this morning, Sunday September 21st 2025. The A483 between Wernllwyd and Sarn-y- bryn caled, the B4381 at Lower Leighton, the A490 at Cilcewydd and the Trehelig Crossroads and minor roads in the area could be affected by flooding. The weather conditions are improving. We will continue to monitor the situation. Technical river level forecast information for those who use it; a peak level between 3.5 m and 3.7 m is possible between 05:30 and 09:00 this morning. This message will be updated as the situation changes.
North
River levels are rising. Flooding to property is expected. Flooding of low-lying land and roads is ongoing. Impacts are ongoing. The A483 between Wernllwyd and Sarn-y- bryn caled, the B4381 at Lower Leighton, the A490 at Cilcewydd and the Trehelig Crossroads and minor roads in the area could be affected by flooding. The River Severn in the Cilcewydd Area at the Munlyn gauge is expected to peak between 13:30PM and 20:30PM today (07/12/2024). We will continue to monitor the situation. Technical river level forecast information for those who use it; a peak level between 3.55m and 3.75m is possible later this afternoon (07/12/2024). This message will be updated as the situation changes.
North
River levels are rising. River levels are expected to rise. Flooding to property is expected. Flooding of low-lying land and roads is ongoing. Impacts are ongoing. The A490 at Cilcewydd and the Trehelig Crossroads, and minor roads in the area could be affected by flooding. The A483 between Wernllwyd and Sarn-y- bryn caled, the B4381 at Lower Leighton, the A490 at Cilcewydd and the Trehelig Crossroads and minor roads in the area could be affected by flooding. The River Severn in the Cilcewydd Area at the Munlyn gauge is expected to rise until approximately 20:00PM this evening. We will continue to monitor the situation. This message will be updated as the situation changes.
North
All peak levels are based on the latest forecast as of 6:00 AM. Munlyn was 3.7 metres. The following roads could be affected by flooding; The A4 9 0 at Cilcewydd and the Trehelig Crossroads. The A4 8 3 between Wernllwyd & Sarn-y-bryn-caled and the B4 3 8 1 at Lower Leighton. This message will be updated by 6:00 PM.
North
All peak levels are based on the latest forecast as of 08:00 PM. Munlyn was 3.8 metres. A peak level between 3.8 and 3.9 metres is possible this evening. The following roads could be affected by flooding; The A 490 at Cilcewydd and the Trehelig Crossroads. The A 483 between Wernllwyd & Sarn-y-bryn-caled and the B 4381 at Lower Leighton. This message will be updated by 10:00 AM
North
All peak levels are based on the latest forecast as of 13:00 PM. Munlyn was 3.2 metres. A peak level between 3.5 and 3.7 metres is possible this evening. The following roads could be affected by flooding; The A490 at Cilcewydd and the Trehelig Crossroads. The A483 between Wernllwyd & Sarn-y-bryn-caled and the B4381 at Lower Leighton. This message will be updated by 6:00 PM.
North
All peak levels are based on the latest forecast as of 09:30 AM. Munlyn was 3.41 metres. A peak level between 3.55 and 3.65 metres is possible this morning. A peak level between 3.55 and 3.65 metres is possible this afternoon. The following roads could be affected by flooding; . The A490 at Cilcewydd and the Trehelig Crossroads. The A483 between Wernllwyd & Sarn-y-bryn-caled and the B4381 at Lower Leighton. This message will be updated by 6:00 PM.
North
All peak levels are based on the latest forecast as of 10:00 PM. Munlyn was 2.9 metres. A peak level between 3.5 and 3.7 metres is possible overnight. The following roads could be affected by flooding; The A490 at Cilcewydd and the Trehelig Crossroads. The A483 between Wernllwyd & Sarn-y-bryn-caled and the B4381 at Lower Leighton. This message will be updated by 10:00 AM.
North
All peak levels are based on the latest forecast as of 8:30 AM. Munlyn was 3.7 metres. The following roads could be affected by flooding; The A490 at Cilcewydd and the Trehelig Crossroads. The A483 between Wernllwyd & Sarn-y-bryn-caled and the B4381 at Lower Leighton. This message will be updated by 6:00 PM.
North
All peak levels are based on the latest forecast as of 4:00 PM. Munlyn was 3.5 metres. A peak level between 3.7 and 4.0 metres is possible overnight. The following roads could be affected by flooding; The A4 9 0 at Cilcewydd and the Trehelig Crossroads. The A 4 8 3 between Wernllwyd & Sarn-y-bryn-caled and the B 4 3 8 1 at Lower Leighton. This message will be updated by 10:00 AM.
North
All peak levels are based on the latest forecast as of 1:30 PM. Munlyn was 3.3 metres. A peak level between 3.5 and 3.7 metres is possible this evening. The following roads could be affected by flooding; The A4 9 0 at Cilcewydd and the Trehelig Crossroads. The A483 between Wernllwyd & Sarn-y-bryn-caled and the B4381 at Lower Leighton. This message will be updated by 6:00 PM.