National Forecast
Issued at: 18 September 2018 23:41
TODAY - Tuesday 18th September
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TONIGHT - Tuesday 18th September
Remaining showers and thunderstorms in the north will soon die out and it will become mainly dry for a time. Later in the night, squally showery rain associated with Storm Ali will move in from the west and spread eastwards. Southerly winds will strengthen overnight reaching gale or strong gale force on Atlantic coasts with strong and gusty winds inland by dawn. Lowest temperatures of 9 to 12 degrees.
TOMORROW - Wednesday 19th September
Storm Ali will bring very windy conditions to all areas tomorrow with strong to gale force south to southwest winds later veering westerly. There will be severe or possibly damaging gusts for a time in the morning especially in the west and northwest. Extreme caution is advised in the coastal districts of Clare, Connacht and Donegal in the morning. Rain will clear quickly in the morning to blustery showers in the afternoon. In the northwest early morning rain will be heavy. Turning cooler, with afternoon temperatures of 11 to 15 degrees.
National Outlook
Wednesday night will be dry in most places with winds easing, though some showers or rain may affect the South coast and also the Northwest coast. Lowest temperatures of 7 to 9 degrees.
On Thursday, rain will move up from the south and will affect much of the country with some heavy downpours in places, though it may be more showery in nature in Northern and Northwestern parts. Highest temperatures of 12 to 15 degrees. Rain will clear to showers on Thursday evening/night.
Friday will be cool and breezy with sunny spells and scattered showers, these mainly in the west and north. Highest temperatures of 12 to 15 degrees with moderate to fresh westerly winds, stronger along Northern coasts.
The forecast for the weekend is uncertain at this stage with the risk of further rain or showers and strong winds at times, spreading up from the Southwest. There is a chance though that high pressure may develop in Northern areas.