Storm Forecast Issued: 01:08 Thursday, 5th August 2010
Valid: 2010-08-05 00:00:00 - 2010-08-05 23:59:00

Regions Affected
(E + SE Scotland, NE England, Yorkshire, E Midlands and East Anglia are included in the WATCH)

Synopsis

Low pressure "Viola" drifts slowly northeastwards away from the United Kingdom and towards Scandinavia during Thursday.  Low pressure "Wilhelmina" approaches from the northwest, dominating the weather for Friday across the country. In between these two systems, a ridge of High pressure extends in, with a rather slack northwesterly airflow.

Scattered showers are expected to develop in the rPm airmass across eastern Scotland and eastern England in response to daytime heating. Hail is possible in some showers given the airmass, and a low risk of thunder and lightning, most likely over E/SE Scotland where best cloud heights aided by orographic lift seem likely. Showers will decrease in covereage during the evening hours.

There is also a low risk (about 20%) of showers developing in the warm sector of the approaching weather fronts at the very end of this forecast period over SW Ireland, drifting southeastwards which may be convective in nature - however, this is uncertain.