2019年2月和2018年冬季. 云天气摘要

Minnesota Suffers a Reverse Groundhog Winter

2019年2月 and 2018 - 2019年冬季 Saint 云, MN, 天气 Summary

Note: This is a summary of meteorological winter, which is defined as the three coldest months of the year (1 December through 28 2月). 天文上的冬天结束于 春分这个节目将会播出 今年3月20日. That's the day when we get back to 12 hours of daylight. 也, note that the cold season can be used to refer to the part of the year when Minnesota can get snow (typically Oct-Apr, but can be longer) or the heating season (July 1-June 30). No, the groundhog doesn't work in Minnesota.

Mild and Brown 1st Half, Cold and Snowy Second Half

It may be hard to believe at this point, but Minnesota has really suffered from about 6 weeks of winter from mid-January through the end of 2月. Before that, the first 6 weeks of the winter were relatively mild and snowless. December and the first half of January averaged 21.0 degrees, which would have ranked as the 8这是圣路易斯市最温暖的冬天. 云记录. 只有15个.1 inches of snowfall and no more than 4 inches of snow on the ground at any time. 没有雪 in the Twin Cities and most of southern Minnesota. 明尼阿波利斯. Paul had its latest first sub-zero temperature of the season, holding off until January 19.

然而, the switch got thrown for the last half of January and through all of 2月. 的 final 15 days of January plus 2月 averaged 4.2 degrees, which would have tied 1884-1885 for the 第四冷的冬天在圣. 云记录. 总共有33个.7 inches of snow since January 21, more than 20 inches above the average of 12 inches. 这包括一个新的 创纪录的二月降雪量 of 27.6英寸，打破了21英寸的旧纪录.6英寸，1971年2月设定. 事实上，今年二月是圣. 云's 4th snowiest of any month on record. 唯一高的是51人.7英寸 1965年3月, 36.1917年3月是0英寸，28英寸.1951年3月1英寸.

包括3月1日的雪，圣. 云已经上升到52.寒冷季节7英寸，18英寸.比平均水平高出2英寸. That is more than 6 inches above the average for the entire snow season (46.1英寸). 在冬季的三个月里，圣. 云共有42个.0英寸， 第十个最大雪的冬天 在圣. 云记录.

St. 云 didn't break any 2月 snowfall records, but had 3 days with at least 5 inches of snow. 这是 first 2月 ever to have 3 days with at least 5 inches 而在圣. 云记录 (1965年3月-3 days; March 2002-4 days) to have that many significant storms in a month. 的 7天至少一英寸 also set a 2月 record (6 days, set 7 times including in 2018).

Easily, the biggest storm of 2月 was the snow and ground blizzard of 2月 22-24. This storm was the rare system that dropped its central pressure by more than 24 mb in 24 hours, qualifying as an "explosive cyclone" or a bomb. About 90% of those storms happen over the ocean so one over continent is rare. This system dumped heavy snow (9-13 inches) over south central and 明尼苏达州东南部. 然而, the strong winds that gusted over 50 MPH in many places took both that snow and the large amount of snow from previous storms (including the 2月20日降雪)，以创造白茫茫的环境. Most roads in the southern half of Minnesota away from the Twin Cities were closed for at least a day. 其他主要降雪包括一场暴风雪 2月6日暴雪, a southern and northeastern Minnesota storm 2月10日，尤其是 明尼苏达州东南部 2月11日至12日.

的 liquid precipitation in that snow totaled 1.2月份95英寸，排名 4th in 2月 liquid equivalent precipitation. This is the highest 2月 total since 1951.

包括寒冷 St. 云's first two lows of -30 or colder since January 16, 2009, 41天的最低气温为零度或更低，. and 4 days that remained below zero all day. 已经有7天了 零下20度或更低 so far this winter, the most since 2013-2014. 结束 一月寒潮 did drop temperatures to the -50s in northeastern Minnesota.

二月在圣. 云的平均得分为7分.7度, 9.比平均温度低3度 and the 19th coldest 2月 on record. But, it will still be short by more than 2 degrees of the 最冷的10个二月. 的 actual average winter (Dec 1- 2月 28) temperature was 12.5度，2.比平均温度低3度.

的 snow bonanza over the past 6 weeks has left a huge snowpack over Minnesota (see NWS NOHRSC雪深图)，它在美国排名第一 heaviest 5 percent for this time of year. All of the state has at least 10 inches on the ground with much of the state having more than 20 inches. This has increased the risk for river flooding along the Minnesota and Mississippi Rivers, southwestern Minnesota, 沿着红河 when the snow melts later in the spring. Unless we begin to melt at a steady rate and soon, there is likely to be some flooding.

2019年2月统计数据

Winter (Dec 1-2月 28) 2018-2019 Statistics