TONIGHT ... Variable cloud, a brief interval of clearing followed by more showers and colder temperatures with lows of 6-8 C, winds becoming northwest 15-30 mph.
SATURDAY ... Mostly cloudy, some brief sunny breaks, but showers that may turn into periods of rain, winds northerly 15-25 mph, chilly, highs 8-10 C.
SUNDAY ... Early morning clear spells may lead to local frost with fog patches, then some limited morning sunshine. Winds will be gradually increasing from the south to southwest all day. By evening, strong winds and periods of rain will be sweeping in with gusts to 45 mph. Morning lows will be about 1-4 C and late afternoon highs 8-10 C (possibly 12 C west coast).
SUNDAY NIGHT ... The strong winds and heavy rain will fade out as the centre of the rather sprawling storm moves over Ireland, and winds may go calm by morning with fog and drizzle. Lows will be about 7 C.
MONDAY ... The calm interval will rapidly come to an end from north to south in the morning as strong east to northeast winds set in behind the low (which will now be moving towards France). By late in the day, quite windy again with NE winds 30-50 mph, periods of rain, and high elevation sleet or snow possible. The rain is likely to be heavier in Ulster and Leinster with 30 mms likely there. Highs will be only 7-9 C and even colder at high elevations.
TUESDAY ... Continuing rather raw and wet as northeast winds slowly subside to 20-30 mph, and rain becomes intermittent. Lows near 4 C and highs near 8 C.
WEDNESDAY may see a brief improvement under a weak ridge of high pressure but by THURSDAY another storm will be moving in from the northwest, this time not dropping further south than Ireland, so that winds will remain westerly when it hits late in the week, with near normal temperatures but strong winds and heavy showers.
The model runs have not all finished yet and there may yet be some changes to the late Sunday to Tuesday storm forecast. One feature not directly weather related would be higher water levels on the south coast as the new moon occurs Saturday so that these strong southerly winds could force water into estuaries from the ocean.
Meanwhile, it was mild and almost calm here in Vancouver today (Thursday 4th) with morning sun and afternoon cloud, highs near 14 C. Rain has spread up the east coast of the U.S. (actually this is the first phase of the developing Monday storm which will start out near Greenland on Saturday). Tomas is slowly increasing in strength and heading for the gap between Cuba and Haiti but most of the rain will hit Haiti as the weak cat-1 hurricane moves past.
Irish Business Today Daily Long Range Weather Forecast provided by Peter O'Donnell
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