Earth:Pembrokeshire Dangler

Short description: Meteorological phenomenon over the Irish Sea

The Pembrokeshire Dangler is a convergence zone which forms a line of continuous showers aligned north-south across the Irish Sea; often as snow occurring during late autumn and winter, since the environmental factors required for its formation such as warm sea temperatures and cold Arctic air aloft are usually only met at this time of year.

It is initiated as a northerly flow is forced between the Rhins of Galloway and the Antrim Plateau. This is then augmented by land breeze effects producing winds blowing from east of north off England and Wales and from west of north off Ireland; these winds then converge down the length of the Irish Sea. As the convergence line spawns deep convection cells, they flow over progressively warmer waters creating further instability and prime conditions for prolonged convection across Pembrokeshire, Cornwall and west Devon.

See also

• Brown Willy effect
• Puget Sound Convergence Zone

References

category:Pembrokeshire