Met Office forecast for Thursday
Issued 25 May at 02:50
Dry with clear spells overnight, a few mist and hill fog patches on western fells. After sunrise, generally dry with plenty sunshine, although coastal ranges will start a little cloudier with some mist and hill fog, this thins and lifts mid morning to leave good sunny periods. Any haze should clear by noon as it becomes hot for the time of year by mid afternoon on lower slopes and in valleys. Then a fine evening.
At dawn, mostly moderate with some haze making mid distance hills faint and in the coastal west occasionally poor; then improving generally good by lunchtime with air clarity improving.
Some dawn banks around 200-400 metres, these mainly in west till mid morning, then lifting to leave only odd patches around 900 metres by lunchtime.
Wind at 500m
South 10 later 15 gust 25mph above 800 metres.
- Valleys/low level: 10 to 13 Celsius at dawn lifting to an afternoon high around 24 Celsius.
- At 900m: 10 rising 13 Celsius
- Freezing level: above all summits
- from time.is
Storm force winds
Severe chill effect
Persistent extensive hill fog
Low risk - In coastal ranges early morning, but lifting.
Heavy persistent rain
High risk - Developing widely from late morning.
Forecast for Friday
Some dawn mist in valleys and the odd shortlived fog patch over slopes soon burning off early morning to leave a dry and fairly sunny day with any haze thinning. Becoming hot quite widely on lower slopes by afternoon.
Moderate at dawn in many areas with some haze, locally very poor in a few valleys, but improving good through the late morning on most ranges with mid distance hills viewable.
Occasional patches around 300 metres mostly dispersing early morning then just a few patches near higher summits.
Wind at 500m
Southerly 25 gust 35-40mph,
- Valleys/low level: 13 rising to 26 Celsius maximum.
- At 900m: 12 rising to 16 Celsius. During the afternoon.
- Freezing level above all summits.
Outlook for next few days
Very warm and humid with some hazy sunshine at first. However turning much cloudier with showers breaking out by afternoon, some heavy and perhaps thundery, these continuing to affect parts of the park for rest of the day. Rather hazy with patchy hill fog forming, mainly western fells. Fresh or strong Southeast winds will later swing westerly, perhaps gales on summits by dusk.
Cooler and quite cloudy with some hill fog above mid mountain, and also isolated light showers. Bright spells later. West or Northwest winds, fresh and gusty at first will quickly ease light and variable later.
An unsettled day, some showers at first, then brighter before some rain may arrive towards dusk. Light winds initially but stronger South or Southwest winds later.