National Snowdonia Forecast Produced by The Met. A very deep depression off Ireland will push a very active front across the National Park this morning. After this a less strong but unstable south to southwest airflow will cover the Park. Some flooding of streams in the region should be expected. Before midday this will begin clearing the National Park, leading to brighter but showery conditions.
Lightning is both possible in the early rain and the sharp showers to follow.
Hill fog must be expected. This will be very poor in the extensive hill fog. Later in the day the visibility will be good away from the showers. The cloud bases will be at several levels today, but being extensive at 600 metres both in the rain and showers, and lower down at 300 metres this morning. This afternoon will see most of this lower cloud clear away, though a scattering is still likely in the heaviest of the showers.