亚洲周末天气影响日食日状况

现在距离 4 月 8 日星期一日全食还有不到 10 天。加拿大和美国各地数以百万计的人们计划前往这条路径

With less than 10 days to go until the total solar eclipse on Monday, April 8, millions of people across Canada and the U.S. are planning to travel into the path of totality, which cuts across portions of Ontario, Quebec, and the Atlantic provinces.The big day is close enough that weather models are finally in range to start sorting out the general patterns expected to criss-cross North America that afternoon. And clouds are the all-important factor for viewing this cosmic splendour.It’s too soon for anyone to accurately or confidently issue a precise cloud forecast. But forecasters can see how conditions across North America that day are likely to hinge on the evolution of an active pattern halfway around the world in Asia.DON'T MISS: Everything you need to know for April's spectacular and rare solar eclipseUp until now, we’ve had to rely on historical data to suss out the probability of cloud cover during the eclipse. And early spring is a stormy time of year, with cloud-filled skies being more common than not across most of the Great Lakes and Eastern Canada on that important date.Asia’s weekend weather to influence Eclipse Day conditionsRight now, though, we can start to see the general position of ridges and troughs in the upper atmosphere. These features can tell us where unsettled weather is possible on the big day, the first clue about where clouds may obscure the total solar eclipse.The timeline starts this weekend as a trough filled with frigid air dips over Siberia. This feature high in the atmosphere over northern Russia will gradually migrate toward lower latitudes in the days ahead, eventually dipping over Alaska before swooping into British Columbia by the middle of the week.RELATED: How to safely watch the April 8 total solar eclipseThis would put the trough—and its associated cold air—around the western United States by next weekend. Cold air tends to amplify the jet stream, which can lead to more widespread unsettled weather near robust troughs and calmer conditions beneath sprawling ridges.A sharp trough over the western U.S. will likely force a ridge to build over eastern North America around the time of the eclipse. (The Weather Network)Lots of things can and likely will change over the next week, but this kind of setup is the first positive sign you’d want to see if you’re hoping for calmer conditions and a chance for clearer skies along the path of the total eclipse here in Canada.Potential storms are still a wildcardIt’s becoming increasingly unlikely that we’ll contend with any Alberta clippers or systems affecting the path of totality from the northwest. Forecasters will closely watch the development of Texas or Colorado lows next weekend, as these would be the likely drivers for make-or-break cloudiness during the eclipse.MUST SEE: Canada’s next solar eclipse could change the weatherBetween this potential pattern and historical cloud data, conditions for southern Ontario may be a coin toss. Different cloud layers and the depth of moisture in the atmosphere would play a role in conditions on April 8. Quebec and the Maritimes may get lucky with this setup, which may favour a lower risk for clouds.Forecasters will have a clearer picture of the upper-level pattern across Canada and the U.S. by Easter Monday, ultimately picking out the location of cloud-producing low-pressure systems across the continent.Stay with The Weather Network for all the latest news and information on the upcoming total solar eclipse, including updated forecasts and fascinating information about this once-in-a-lifetime experience.WATCH: How to capture the solar eclipse with your phone or DSLR cameraClick here to view the video

距离 4 月 8 日星期一日全食还有不到 10 天的时间，加拿大和美国数百万人正计划进入日全食路径，该路径横跨安大略省、魁北克省和大西洋省份的部分地区。这个重要的日子已经很近了，天气模型终于可以开始整理预计当天下午横跨北美的一般模式。云是观赏这一宇宙壮丽景象的最重要因素。现在要准确或自信地发布精确的云预测还为时过早。但预报员可以看到当天北美各地的情况可能取决于半个亚洲亚洲活跃模式的演变。不要错过：关于四月壮观而罕见的日食您需要了解的一切到目前为止，我们必须依靠历史数据来确定日食期间云层覆盖的可能性。早春是一年中的暴风雨季节，在这个重要的日子里，五大湖区和加拿大东部的大部分地区云雾缭绕的天空更为常见。亚洲周末天气会影响日食日的情况，不过现在我们可以开始查看高层大气中脊和槽的一般位置。这些特征可以告诉我们在大日子里哪里可能出现不稳定的天气，这是云层可能遮盖日全食的第一个线索。时间线从本周末开始，一个充满寒冷空气的槽降落在西伯利亚上空。俄罗斯北部上空高层大气层中的这一特征将在未来几天逐渐向低纬度地区迁移，最终在阿拉斯加上空下降，然后在本周中旬猛冲到不列颠哥伦比亚省。相关：如何安全观看 4 月 8 日日全食这将把到下周末，该低压槽及其相关的冷空气将在美国西部周围形成。冷空气往往会增强急流，这可能会导致强劲的低压槽附近出现更广泛的不稳定天气，以及蔓延的山脊下的平静条件。美国西部上空的尖锐低压槽可能会迫使北美东部在蚀。 （天气网）下周，很多事情都可能发生变化，但如果你希望天气更加平静，并且有机会看到沿途天空更加晴朗，那么这种设置是你想要看到的第一个积极信号。加拿大这里的日全食路径。潜在的风暴仍然是一个通配符。我们越来越不可能与影响西北方向日全食路径的任何阿尔伯塔快艇或系统抗衡。预报员将密切关注下周末德克萨斯州或科罗拉多州低压的发展，因为这些可能是日食期间云量成败的驱动因素。必须注意：加拿大的下一次日食可能会改变天气在这种潜在模式和历史云数据之间，安大略省南部的情况可能就像抛硬币一样。不同的云层和大气中的水分深度将在 4 月 8 日的天气情况中发挥作用。魁北克省和滨海省可能会幸运地利用这种设置，这可能有利于降低云的风险。预报员将对上层有更清晰的了解。到复活节星期一，加拿大和美国的水平模式将最终确定整个大陆产生云的低压系统的位置。请关注天气网络，了解有关即将到来的日全食的所有最新新闻和信息，包括更新的信息关于这一一生一次的体验的预测和有趣的信息。观看：如何用手机或数码单反相机捕捉日食点击此处观看视频