Tuesday, 27 November, 2018
Forecasts for Ireland
TODAY ... Heavy rainfall alert in place, 20 to 40 mm in many areas this morning, tapering off around mid-day except in north Leinster and east Ulster where it could continue to the afternoon. With this band of heavy rain, some embedded squally thunderstorms are possible and there could be very localized wind damage or hail reported, most likely in central Munster to south Connacht. After the band of rain moves through, some clearing may develop and winds will ease from southerly gales of 50 to 80 km/hr with some local gusts to 110 km/hr, to about 30 to 50 km/hr from the southwest this afternoon and evening. Intermittent light rain will return from the southwest by evening. It will be quite mild with highs near 10 C in north Leinster and east Ulster, to 14 C in parts of west Munster.
TONIGHT into WEDNESDAY ... Storm "Diana" will move quickly past Ireland in two waves, the first one later tonight and Wednesday morning, and a second wave around mid-day. Winds will increase again to southerly 80 to 120 km/hr in exposed locations, veering slowly to southwest and easing slightly by afternoon or evening. Severe and damaging gusts are possible, especially around coastal Connacht, and possibly some other coastal areas. Overnight lows only falling to about 10 C, then highs around 12 or 13 C during the morning, with temperatures falling slowly by late afternoon, winds then steady and moderate southwest 50 to 80 km/hr. About 10 mm of rain on average but potential for 20 mm in some parts of the southeast as a secondary wave forms to the west of Cornwall and moves through in the evening.
THURSDAY ... Windy with passing squally showers, winds southwest to west 60 to 100 km/hr, lows near 6 C and highs near 10 C.
FRIDAY ... Windy at times, further showers, lows near 5 C and highs near 9 C.
WEEKEND OUTLOOK ... Overcast, mild, rain at times, moderate southwest winds could become strong again on Sunday. Highs near 10 C.
FURTHER OUTLOOK ... Unsettled, mild, possible stormy intervals to follow within a week to ten days.
My local weather on Monday was cloudy with occasional rain mixing with melting snowflakes at times, highs near 3 C. Further rain-snow mix is expected here on Tuesday.
Watch for updates if storm "Diana" makes any more threatening moves than what you see in this forecast -- there is still some spread in the guidance on this storm which is currently just northwest of the Azores around 42N 36W.