2014年11月 Saint Cloud Weather Summary

11月10日至11日的暴风雪 被评为 圣路易斯第13大暴风雪. 云记录 (13.5 inches) and produced the 6th highest 24小时的降雪 (13.2英寸)和最高的 11月24小时降雪量纪录 (旧记录:12.(1898年11月21日). However, the snowpack also assisted a persistent cold weather pattern to produce the 11月9日最冷. 云记录 (22.9°F,7.比平均温度低5华氏度).

The deep snowpack causes a good chunk of the sun's energy to be reflected back to space, 所以这有一种寒蝉效应. Add in a persistent flow pattern that had air from the Arctic Circle drain into most of the Canada and the US east of the Rockies and several cold records were established. There were 4 daily record cold temperatures 11月不分胜负. The 5天最低零度或更低 was the highest November total since 1991. To compare, there were only 6 combined November days with a low that cold between 1998 and 2013.

There were 12 days that were at least 10 degrees colder than the daily average, including 10 of the 11 days during November 11-21. The high temperature was colder than freezing each day between 11月10日 and November 21. The 12 straight days below freezing was tied with November 1985 for the 11月连续时间第四长 on record.

The big November snowfall accounted for most of the 17.6英寸的雪，8.比平均水平高7英寸，而且 11月8日最大雪 on record and the snowiest November since 1991, which had the Halloween blizzard. The 11月10日-11 snowfall accounted for the 11月最大降雪量 since Nov. 28-Dec. 1, 1985 (16.8 inches). The 9 November days with measurable snowfall was the most in November since 1996.

The amount of liquid in the 11月10日-11 snowfall also produced a total of 1.24英寸，设定 降水日记录. The 1.25 inch that fell on 11月10日-11 was as much as the total rainfall in St. Cloud between October 10 and November 9.

The 1.89英寸的液体在St. Cloud reversed the trend of the previous two months and pushed the 2014 total precipitation to 35.97 inches. 已经是这样了 第六个最潮湿的年份 也是1983年以来最潮湿的一年. 还有一个月的时间. The 10 days with at least an inch of liquid in 2014 is 一年来并列第七 也是自1971年以来最多的一次.

The end of November also marked the end of meteorological fall (September 1-November 30) in St. Cloud. Overall, the average temperature fell to 44.1°F, 0.比平均温度低8华氏度. 寒冷的十一月 balanced out the warm September and October.

The number one question is whether this cold and snowy November will lead to a cold and snowy winter. 短期内, the temperatures are likely to continue to be colder than average through much of this week. However, the longer range forecast has a lot to do with the development of El Nino, an abnormally warm ocean current in the tropical Pacific. The sea-surface temperatures in the tropical Pacific have been running warmer than average over the past couple of months. But they will have to rise further to develop a true El Nino situation. The reason for the focus on El Nino is that the Northern Plains tend to have warmer than average winters during an El Nino. Also, the southern US tends to be wetter than average during an El Nino.

从气候学的角度来看，圣. Cloud is now coming off two seasons with 积雪超过75英寸, which rank 4th (2012-2013) and 5th (tie; 2013-2014). 这是第一次 St. Cloud had maintained such heavy snowfall for two straight seasons. The average season-to-season drop in snowfall among following the ten snowiest years is nearly 30 inches. Only last season's snowfall stayed within 3 inches of the previous year. So, the odds favor less snowfall, but that's not a promise.

However, if the snow cover put down on 11月10日 ends up lasting through the bulk of the winter, we might have a chance at one of the longest streaks on record. 9条最长的条纹 (each at least 130 straight days) all began in November. It would only take 3-4 days above freezing to melt what we have, 如果我们不再加, but a prolonged snow cover will make this winter seem very long.

第9次降雪