Flood Alert Info - Lower Towy

Area Description

Rivers in the lower Towy catchment downstream of Llandeilo excluding Llandeilo.
This is a Flood Alert Area. For this area the highest level of flood notification that you will receive is a Flood Alert. No Flood Warnings or Severe Flood Warnings are issued for this area.
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There are no Flood Alerts currently in force for this area. See below for historical flood warnings.

Area Covered by this Flood Alert

The orange highlighted area on the map below outlines the area covered by this Flood Alert.
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Flood Alert History

Number of historic Flood Alerts that have previously been recorded for this area:
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Historical Flood Alert Messages for this Area


Flood Alert issued on 29 Feb 2020 13:39
South West
The heavy rainfall associated with Storm Jorge has now cleared the areas. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land during the next 24 hours. This message will be updated as the situation changes.


Flood Alert issued on 28 Feb 2020 15:38
South West
Heavy rainfall associated with Storm Jorge is impacting the area. The rainfall is forecast to continue overnight until 5am on Saturday 29th February. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land over the weekend.


Flood Alert issued on 28 Feb 2020 12:08
South West
No additional information available


Flood Alert issued on 24 Feb 2020 12:20
South West
The heaviest rainfall has now cleared the areas, however, the combination of ground conditions and existing river levels gives a high risk of flooding of low-lying land during Monday.


Flood Alert issued on 17 Feb 2020 16:12
South West
The heaviest rainfall has now cleared the area. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land during the next 12 hours.


Flood Alert issued on 16 Feb 2020 19:10
South West
The heaviest rainfall has now cleared the area, but further showers are expected overnight into Monday 17th February. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land overnight, over the weekend.


Flood Alert issued on 15 Feb 2020 12:26
South West
The rainfall is forecast to continue until 9:30AM on Sunday the 16th of February. Rain is expected to be largely continuous over this period with some higher intensity bursts expected during Saturday evening and overnight into Sunday. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land during the next 24 hours.


Flood Alert issued on 9 Feb 2020 12:36
South West
The rainfall is forecast to 1pm on Sunday 9th February. Heavy showers are expected to continue as Storm Ciara takes hold. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land during the next 24 hours.


Flood Alert issued on 14 Jan 2020 16:06
South West
The rainfall is forecast to continue until 7:00 PM on Tuesday the 14th of January. The level of the River Tywi, between Llandeilo and Carmarthen is expected to exceed the flood alert threshold by 5:00 PM and reach a peak level by 9:00 PM on Tuesday the 14th of January. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land during the next 24 hours.


Flood Alert issued on 12 Jan 2020 13:16
South West
The heaviest rainfall has now cleared the area. The level of the River Tywi between Llandeilo and Carmarthen will continue to rise very gradually for 1-2 hours as flows from the upper part of the catchment gradually reach this area. The peak level is only expected to marginally exceed the flood alert threshold, but the level will only very gradually subside during the afternoon. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land during the next 12 hours.


Flood Alert issued on 19 Dec 2019 16:06
South West
The River Towy, between Llandeilo and Abergwili, is expected to remain above the flood alert threshold until about 02:00AM on Friday the 20th of December. The band of rain passing across the area during Thursday evening may further increase the river level, but this is not expected to rise significantly over this period. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land during the next 24 hours.


Flood Alert issued on 19 Dec 2019 07:01
South West
The heaviest rainfall has now cleared the area, but further rainfall will arrive during the afternoon and continue for a period of approximately 6 hours between 2:00PM and 8:00PM on Thursday the 19th of December. The River Towy, between Llandeilo and Nantgaredig, is expected to exceed the flood alert threshold at about 8:00AM. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land during the next 24 hours.


Flood Alert issued on 12 Dec 2019 21:05
South West
Heavy showers are forecast to ease by midnight on Thursday 12th December. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land overnight.


Flood Alert issued on 11 Dec 2019 13:42
South West
The heaviest rainfall has now cleared the area but further showers are expected overnight on Wednesday 11th December, and during the day on Thursday 12th December. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land overnight into Thursday 12th December.


Flood Alert issued on 10 Dec 2019 19:44
South West
the rainfall is forecast to ease and the heaviest rainfall has now cleared the area. The combination of ground conditions, existing river levels and recent rainfall quantities gives a risk of flooding of low-lying land during the next 12 hours.


Flood Alert issued on 3 Nov 2019 01:04
South West
The rainfall is forecast to continue until about 04:00 am today Sunday 3rd November 2019. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land over the weekend.


Flood Alert issued on 26 Oct 2019 20:39
South West
The heaviest rainfall has now cleared the areas. The combination of ground conditions and existing river levels gives a high risk of flooding of low-lying land overnight.


Flood Alert issued on 25 Oct 2019 16:20
South West
The current period of rainfall is forecast to persist until late morning on Saturday the 26th of October, rainfall will become heavy at times. River levels in this area will rise this afternoon and will become high this evening and will remain high through Saturday. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land over the weekend. We will continue to monitor the situation and we will update this message if the situation changes.


Flood Alert issued on 12 Oct 2019 22:15
South West
A band of persistent rainfall, heavy at times is forecast overnight on Sunday the 13th October. River levels are expected to rise during the early morning and stay high into the afternoon. Only relatively minor impacts are currently expected. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land during the next 24 hours. We will monitor the situation and update this message if the situation changes.


Flood Alert issued on 30 Sep 2019 20:18
South West
The heaviest rainfall has now cleared the area. The level of the River Towy between Llandeilo and Carmarthen has been falling steadily since Sunday evening, but this downward trend has been temporarily halted and the river level is expected to remain marginally above the flood alert threshold for the next 6-8 hours. There is no indication that there will be a significant increase to the river level over this period and a downward trend should be re-established during daytime hours on Tuesday. Low-lying land will remain flooded for the next 12-24hrs and therefore special care should be taken to avoid flooded roads along the Towy floodplain.


Flood Alert issued on 28 Sep 2019 23:48
South West
The main band of rain is forecast to continue until 1:00 AM on Sunday the 29th of September. Intermittent showers with high rainfall intensities may occur until 6:00 AM. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land during the next 24 hours. The level of the River Tywi at Ty Castell is forecast to exceed the flood alert threshold by 5:00 AM on Sunday the 29th of September and the River Gwili at Glangwili is expected to reach the flood alert level by 1:00 AM on Sunday the 29th of September.


Flood Alert issued on 17 Mar 2019 03:21
South West
The heaviest rainfall has passed but there may be isolated showers through Sunday, 17/03/2019. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land today 17/03/2019.


Flood Alert issued on 12 Mar 2019 18:09
South West
The heaviest rainfall has now cleared the area. Light showers are expected between 7:45 PM on Tuesday the 12th of March and 5:00 AM on Wednesday the 13th of March but these should not have a major impact on river levels. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land overnight. The River Tywi at Ty Castell is now close to its peak, but the level is expected to remain above the flood alert threshold until about 1:00 AM on Wednesday the 13th of March. The level should continue to subside slowly this evening and during the early hours of Wednesday morning.


Flood Alert issued on 12 Mar 2019 09:45
South West
The rainfall is forecast to continue until 2:00 PM on Tuesday the 12th of March. The rain should gradually ease over the next 3 hours and become quite light between 1:00 PM and 2:00 PM. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land during the next 24 hours. The River Towy at Ty Castell is expected to exceed the flood alert level at about 3:00 PM and reach a peak level by about 7:00 PM before gradually subsiding during the early hours of Wednesday the 13th of March.


Flood Alert issued on 19 Dec 2018 07:53
South West
Showers remain today, some of which may be heavy. The combination of ground conditions and existing river levels gives a high risk of flooding of low-lying land during the next 12 hours.


Flood Alert issued on 7 Dec 2018 15:58
South West
Following the heavy rain early on Friday 7th December river levels in the Lower Towy catchment remain high even though the river has peaked and is gradually receding. The combination of ground conditions, existing river levels and some forecast rainfall maintains the risk of flooding of low-lying land during the next 24 hours. You can monitor the situation in your area by using our River Levels Online Service on our website.


Flood Alert issued on 7 Dec 2018 06:50
South West
The rainfall is forecast to continue to ease. The heaviest rainfall has now cleared the area. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land during the next 12 hours.


Flood Alert issued on 13 Nov 2018 10:47
South West
The heaviest rainfall has now cleared the area, but some showery rain is expected late on Tuesday 13th November into the early hours. River levels will remain elevated through today, but only minor impacts to low lying land and roads are expected. We will monitor the situation and update this message as the situation changes.


Flood Alert issued on 12 Nov 2018 14:34
South West
River levels in the upper Towy catchment are responding to heavy rainfall showers, further isolated showers are expected into this evening on Monday 12th November. River levels will remain elevated overnight, but only minor impacts to low lying land and roads are expected. We will monitor the situation and update this message as the situation changes.


Flood Alert issued on 11 Nov 2018 11:17
South West
The heaviest rainfall has cleared the area, however isolated showers are forecast throughout Sunday and overnight into Monday. River levels in the Lower Towy catchment have responded to last night’s rainfall but the situation is improving, and risk of flooding is continually reducing. We will continue to monitor conditions and will update this message as the situation changes.


Flood Alert issued on 10 Nov 2018 12:23
South West
The heaviest rainfall has cleared the area. Isolated showers are expected over the remainder of the weekend. River levels in the lower Towy catchment remain elevated but are receding and are expected to continue to recede. The situation is improving, and risk of flooding is continually reducing. We are continuing to monitor conditions and we will update this message if the situation changes.


Flood Alert issued on 9 Nov 2018 16:38
South West
The River Tywi between Llandeilo and Carmarthen is currently below the flood alert threshold at monitored locations, but forecasts indicate that the level will exceed the flood alert threshold between 2:00 AM and 4:00 AM on Saturday the 10th of November. The rainfall is forecast to continue until 8:00 PM on Friday the 9th of November. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land over the weekend.


Flood Alert issued on 8 Nov 2018 13:27
South West
No additional information available


Flood Alert issued on 6 Nov 2018 16:28
South West
The rainfall is forecast to continue overnight on Tuesday 6th November and into the morning of Wednesday 7th November. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land during the next 24 hours.


Flood Alert issued on 14 Oct 2018 15:09
South West
The heaviest of the rainfall has passed through South West Wales area. River levels will remain high over the next few days giving a high risk of flooding to low-lying land and roads. Some surface water issues may remain. You can monitor the situation using our river levels online service on the Natural Resources Wales website. We will update this message if there is any change to the situation.


Flood Alert issued on 12 Oct 2018 14:07
South West
A prolonged period of rainfall is expected from the early hours of Friday morning 12th of October, until the Sunday the 14th of October. River levels are expected to rise during Friday and will remain high over the weekend giving a high risk of flooding to low-lying land and roads. You can monitor the situation using our river levels online service on the Natural Resources Wales website. We will update this message tomorrow as confidence in the forecast improves.


Flood Alert issued on 21 Sep 2018 11:53
South West
River levels are expected to remain high throughout the day. The heaviest rainfall has now cleared the areas. The combination of ground conditions and existing river levels gives a high risk of flooding of low-lying land throughout today, Friday the 21st of September.


Flood Alert issued on 20 Sep 2018 11:49
South West
A widespread area of rain is currently affecting the area. The rainfall is forecast to be prolonged through today, Thursday the 20th of September. Heavy rain is expected at times later. This rain is forecast to become more broken this evening, with the prolonged rainfall eventually clearing to leave more scattered showers during the early hours of Friday morning. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land this from Thursday afternoon through to Friday morning.


Flood Alert issued on 21 Jan 2018 16:45
South West
The heaviest rainfall has now cleared the area. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land during the next 12 hours.


Flood Alert issued on 23 Nov 2017 02:13
South West
The heaviest rainfall has now passed but heavy showers continue to affect the Towy Valley. These will be expected to ease by 3 AM on Thursday 23rd November. These showers may result in river levels, especially in smaller catchments responding quickly. The combination of ground conditions, existing river levels and forecast rainfall which has fallen this afternoon and evening gives a high risk of flooding of low-lying land in the lower Towy Valley during the next 12 hours. River levels in the lower Towy are expected to peak by 7 AM on Thursday 22nd November. .


Flood Alert issued on 15 Sep 2017 10:41
South West
The rainfall is forecast to continue to ease. Sporadic showers will continue to occur throughout the day with the potential for significant quantities of rain in parts of the Towy catchment. It is likely that the strong northerly wind will prevent organised bands of rain forming and therefore more prolonged spells of rainfall are not expected. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land during the next 24 hours. The River Towy between Llandeilo and Carmarthen is expected to reach the flood alert level in the next 1-2 hours and the level will remain elevated for 6-8hrs thereafter as the peak gradually recedes.


Flood Alert issued on 6 Jun 2017 02:53
South West
The rainfall is generally easing; however, further heavy showers are expected into the early hours of Tuesday morning. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land during the next 24 hours. River Levels are expected to rise slowly through the night into Tuesday morning, but impacts are expected to be relatively minor. We will update this messages as the situation changes.


Flood Alert issued on 6 Jun 2017 01:57
South West
No additional information available