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lets say you want the 5 day weather forecast for wales you can see longer up to 15 days ahead

To use these weather charts we recommend this method. Choose model first I.E GFS or NAE etc

Then choosing what you want for that model i.e percipitation or pressure chart etc.

Now run through the hours that you want to monitor

Now you are looking at the latest run for this model

To compare any changes for that time with that model change run time ie from 18z back to 12z etc. This shows the same time as previously looked at but what the model predicted back at previous time, compared to what latest run shows.



This Site is to be used for information only.

The data on this site is provided for purpose of information only and is not intended for any other reason, including but not limited to flood forecasting, flood prevention or predicting actual weather severity. It is up to you the user to decide if you need to take action and what action if any to take. Floodwarn shall not be liable for any errors, inaccuracies,misrepresentations, delay in the content, or for any action taken or not taken in reliance thereon. The FloodWarn site contains information that may or may not be accurate.

Please use the UK GOVERNMENT sites for reliable information.

Floodwarn accept your use of this site under these terms only.



With thanks to weatheronline please also visit their site here


A flash flood is a sudden flood event caused by a hydrologic response of the drainage basin. Flash floods are normally strongly localized and associated with extreme showers or thunderstorm activity, when high rates of precipitation occur in a short period of time.

On July 4, 2001 a flash flood swept through the Bryn Gwyn holiday park near Bala, North Wales leaving up to 45,000 homes without power and moving caravans several hundred yards away

Flood warnings are issued by the relevant government agencies for your area. The warnings for flood should appear on here live but we recommend that any danger of flood is checked by your flood authority eg EA or SEPA.

We aim to give as much flood information as possible including flood warnings and flood predictions, we have river cams to show flood states of rivers, used in conjunction with weather rain radar to predict if rain will continue and cause possible flooding.

In addition we have rain gauges showing rain fall and likely floods and flooding.

  • 66 percent of flood deaths occur in vehicles, and most happen when drivers make a single, fatal mistake trying to navigate through flood waters.
  • Just 6 inches of rapidly moving flood water can knock a person down.

  • A mere 2 feet of water can float a large vehicle even a bus.
  • Flood warnings are updated by Gov agencys. We endeavour to keep the flood warnings updated but you may need to refresh the page occasionally in case your computer has the flood warnings stored in its cache.
  • Any doubt about these flood warnings and you should visit the relevant gov site to confirm latest flood warnings are being shown.
  • We have flood warnings on this site so as much information can be gained from one source as possible rather than users searching for different information in different places.
  • Severe flood warnings are the most dangerous warning with alerts, and flood warning often issued before severe flood warnings