Monday, 18 November, 2013 Forecasts for Ireland TODAY ... For northern and most western counties, breezy and colder with passing squally showers with some hail, snow on higher terrain. Winds NW 40-60 km/hr, highs 6-9 C. For south and east, as well as lower terrain in southwest, mixture of sunshine and cloud, isolated showers, occsaionally breezy (W-NW 30-50 km/hr) and highs 8-10 C. TONIGHT ... Clear intervals with lows -2 to +3 C, frost in sheltered spots but ongoing northwesterly winds 40-60 km/hr will prevent widespread frost. A few wintry showers may stream inland around Donegal Bay at times but most places will remain dry. TUESDAY ... A cold and frosty start, some sunshine followed by increasing cloud, winds backing into the west but remaining rather strong at 40-70 km/hr. Rain will then arrive during the late afternoon or evening. Morning lows -2 to +3 C and highs 7-10 C. WEDNESDAY ... Morning showers with gusty northwest to northerly winds, increasing to 50-80 km/hr, lows about 2-5 C and highs 5-8 C, feeling very cold due to the winds. Rainfalls generally 3-5 mm, some snow on hills by evening. THURSDAY ... Cold with isolated wintry showers, some accumulations of snow possible during the early morning in higher parts of north. Lows -1 to +3 C and highs 6-9 C. FRIDAY to SUNDAY currently looking somewhat milder although nights could remain frosty, but days should feel milder, due more to slack winds than warming temperatures with lows generally -3 to +1 C and highs 7-10 C. OUTLOOK ... Guidance is somewhat mixed but the general trend seems to be a continuation of rather cold and settled conditions although at times it may be close to normal values for late November as slightly milder air seeps into the circulation. There is probably some chance that most guidance will be wrong and well see a more rapid return to unsettled and mild conditions -- this is because there hasnt been much consistency to past few days of model output which illustrates that the models probably dont find very strong signals at present. This early in the winter, without a robust cold influence, its fairly easy for the atmosphere to return to its natural default of a mild westerly. Forecasts for Britain TODAY ... Showers ending from west to east, some sunny intervals developing, becoming rather breezy with highs 8-11 C. OUTLOOK ... The pattern will be similar to Ireland with a cold night ahead, some frost, then widespread rain and gusty winds moving through again on Tuesday night and Wednesday, although some snow could fall in north and on higher ground especially in Scotland. Highs will be generally about 7 to 10 C from north to south. Later in the week western districts will probably see some improvement but eastern regions could remain in more of a wintry north to northeast flow and highs only 4-7 C there. Forecasts for North America Today will see very strong winds from a westerly direction across most of the Great Lakes and northeast U.S., with snow squalls developing north of the lower Great Lakes where it will remain a bit too mild except on higher hills in PA and NY states. Highs will range from 7 C near the lower lakes to -2 C in the central Great Lakes, and after morning highs near 15 along the eastern seaboard it will drop gradually to about 8 C. Some gusts to 100 km/hr are likely but there wont be any further tornadic storms as the weakening front moves into Quebec and New England, but some wind damage is likely. Further south the weather will remain clear to partly cloudy and rather mild. Colder air wrapping around the deep low will be held back by the rapid development of a new low over Montana which will move quickly northeast, setting off a near-blizzard snowstorm in parts of western Canada inland from the showery Pacific coast, as temperatures across the prairies remain below -10 C except near the border. Into the west-central U.S., much milder air is streaming in from the Pacific today and will hold on for most of the week holding the very cold arctic air in its current location north of the border, although some will seep into Minnesota and the northern parts of Wisconsin and Michigan where heavy lake effect snow will occur. ... My local weather on Sunday was partly to mostly cloudy with a high of 9 C -- Peter for IWO
Posted on: Mon, 18 Nov 2013 06:50:16 +0000
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