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A weather forecaster in New Zealand agreed with him. [ 2 ] In December 2009, he predicted that he was "90 per cent certain" there would be snow in Ireland on Christmas Day , also known as a " White Christmas " [ 7 ] [ 8 ] He pointed to the way animals such as cattle, foxes and sheep were behaving and the way in which the grass had grown in late ...
The driest year recorded in Ireland was 1887, with 356.6 mm (14.04 in) of rain recorded at Glasnevin, County Dublin. The longest drought in Ireland occurred in Limerick between 3 April 1938 and 10 May 1938 (37 days). The greatest monthly total was 790.0 mm (31.10 in); recorded at the Cummeragh Mountains, County Kerry, in October 1996.
Over the past three decades ECMWF's wide-ranging programme of research has played a major role in developing such assimilation and modelling systems. This improves the accuracy and reliability of weather forecasting by about a day per decade, so that a seven-day forecast now (2015) is as accurate as a three-day forecast was four decades ago (1975).
The forecast is then followed by a more general weather report, the sign-off, traditionally ending with the presenter wishing the audience a good night, the national anthem "God Save the King" and the closedown of the station for the day, with the BBC World Service taking over the frequencies after the pips of the Greenwich Time Signal at 01:00.
On 22 January 2025, the Irish meteorological service Met Éireann issued an orange wind warning for 26 counties of Ireland for the period 02:00 to 17:00 UTC on 24 January 2025 [4] and a red wind warning for counties Clare, Cork, Kerry and Limerick covering the period 03:00 to 10:00 UTC on 24 January 2025 in anticipation of the storm's arrival.
Microsoft's Aurora system offers global 10-day weather and 5-day air pollution (CO 2, NO, NO 2, SO 2, O 3, and particulates) forecasts with claimed accuracy similar to physics-based models, but at orders-of-magnitude lower cost. Aurora was trained on more than a million hours of data from six weather/climate models. [83] [84]
Yr.no generates weather forecasts for millions of places around the world. Its 3-day forecast uses two different weather models with a 2.5 km resolution in Scandinavia and the Norwegian islands, and for other places, the ECMWF's IFS model in high-resolution configuration (HRES), with a 9 km resolution.
The mathematical model is run four times a day, and produces forecasts for up to 16 days in advance, but with decreased spatial resolution after 10 days. The forecast skill generally decreases with time (as with any numerical weather prediction model) and for longer term forecasts, only the larger scales retain significant accuracy.