Thursday, 25 September, 2014 Forecasts for Ireland So, I am back home and hopefully can get back into the habit of posting daily forecasts. Note that we had the new moon earlier Wednesday (0714h) which helps explain why the Jewish holiday, Rosh Hashanah has just passed. This marks the start of the Jewish liturgical year although their civil calendar begins with the March (or early April) new moon. Situation -- This is a second forecast to ponder today, I just logged in and noticed that Fergal has posted ... so I read it over and we have pretty similar conclusions, just think of this as a second helping ... just a word or two about the situation -- a very warm pattern in the upper atmosphere guarantees above normal temperatures will continue, but how far above normal depends to some extent on how much sunshine gets through low cloud, and then how much of a breeze develops to mix the air further. Today, theres some potential for readings as high as the 21 to 23 C range in parts of the east, if downsloping combines with a bit of mid-day sunshine. Even tomorrow, when the warmest air aloft has moved on to Britain, the stronger breeze could mix down some rather warm air, dont be surprised if temperatures over-perform in places. From Saturday on, the pattern gradually becomes more humid with air flowing up from a southerly source. There might be generally more cloud and even light rain associated, but it will stay very mild especially (relative to normal) at night. My forecasts follow ... TODAY will see a mixture of sunshine and cloud, the cloud more persistent in the light westerly flow coming in from the Atlantic, and the sun more likely in central to eastern counties. Highs 18 to 23 C warmest near the Wicklow coast south of Dublin, and possibly in some parts of the inland south and southeast. Feeling quite humid too. TONIGHT ... Rather extensive low cloud or mist and very mild. It likely wont cool down very fast over eastern counties as temperatures linger in the mid-teens past midnight in some places, eventually falling to lows of 8-10 C. Any clear spots might generate some dense fog and lows of 5-7 C in those clearer locations. FRIDAY ... Intervals of cloud and sunshine, the cloud once again more likely in western to northern counties. Highs 17-21 C warmest again in the east and southeast. SATURDAY ... Foggy to start, then some sunny breaks, warm, but with coastal fog or drizzle in parts of south and west. Lows 7-9 C and highs 18-20 C. SUNDAY ... Cloudy with a few sunny intervals, a few outbreaks of light rain possible in west. Lows near 10 C and highs near 18 C. OUTLOOK ... Much of the following week will be relatively warm but rainfall is likely to pick up and become occasionally moderate if not heavy around mid-week as fronts begin to push into the country from the west. Highs most days will be in the 17-20 C range. Its a rather similar outlook for Britain although Friday could be even warmer there as the approaching warm wedge aloft moves across southern portions of Britain during the day Friday. Over in North America, the weather is very pleasant for most regions between the east coast and the Rockies. A slow-moving storm (that I just flew over and then into) is parked over the Rockies and will be producing heavy rain in parts of northern B.C. and central Alberta today, which may begin to mix with snow over the mountains by Friday, but all other regions will stay quite warm through the weekend. My weather day included dense fog in Ottawa early morning Wednesday, then a view of fog almost coast to coast under high pressure situated near Lake Superior, followed by a rather hair-raising descent through a frontal band of showers over the Cascades into rainy Vancouver. It has since cleared up a bit and the high was 19 C although I slept through that. -- Peter for IWO
Posted on: Thu, 25 Sep 2014 06:39:38 +0000
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