“People can get angry when you tell them that the app allows for local areas,” he says. “The Met Éireann app uses forecast model data with a horizontal grid spacing of 2.5km, whereas other apps such as Yahoo Weather or the Weather app use information from models with a much coarser horizontal grid spacing, upwards of 10km and sometimes even 25km,” said Dr Alan Hally of Met Éireann. “The forecasting model we use at Met Éireann is also refreshed eight times per day compared to twice daily for the information feeding these other weather apps.Įven still, no forecasting system is bulletproof, says Alan O’Reilly who runs the popular online meteoreology Twitter account Carlow Weather. While these are broadly right, their underlying forecasting systems aren’t as zeroed-in on local areas as those used by Met Éireann, which divides its zones into parcels that are just 2.5km across. Other Android smartphones use Accuweather’s data as their weather feed. Get ahead of the day with the morning headlines at 7.30am and Fionnán Sheahan's exclusive take on the day's news every afternoon, with our free daily newsletter.Įnter email address This field is required Sign Up Generally, those apps take their data from US feeds that usually aren’t quite as specific or focused as Irish forecasts. While the most popular weather app in both the iPhone and Android Irish app stores is Met Éireann’s app, they are not the apps that come preloaded on smartphones when you buy them. What’s going on? Is there some sort of schism in the forecasting force? Are April and May just haywire months for accurate predictions of fast-changing conditions? Or are the apps themselves to blame? “Am sick of that sh**e weather app ruining my life,” tweeted Dubliner Shauna Savage. “Checked the weather app,” tweeted Cat Bethan-Brady recently. Lately, though, it seems to be all over the place. Ireland has always been a tricky place to predict the weather. “Should I water the plants now or will nature do the job for me later?” “Am I OK to leave the house without an umbrella?” IT’S a dilemma as old as weather forecasting.
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