2024年3月圣克劳德天气摘要

冬天 '23-'24: A Cold Week in January, A Snowy Week in March

2024年3月1日. 云，MN天气摘要

八月雪夜

After spending most of meteorological winter having the conditions of mid-March to mid-April, central Minnesota was hit by a pair of snowstorms that dumped more snow in many parts of Minnesota than the total from October through the first half of March. 两次风暴产生了18个.18个中的2个.三月在圣. 澳门威尼斯人娱乐城，2024年3月St. 云的 8日雪 记录在案. 三月份的平均降雪量为8.2英寸.

在一次 厄尔尼诺年, when there are usually multiple storm tracks across North America, the pair of storms reflected the main possibilities for Minnesota to get major snowfall. 的 3月21日至22日产生5场风暴.3英寸的绒毛 at SCSU and more than 8 inches in a narrow band from just south of St. 云进入明尼苏达州中东部. That one occurred as a strong storm in the northern branch of the steering winds tracked through Nebraska and Iowa with enough mid-level moisture to squeeze out a third of an inch of water and had enough cold air in place to keep the precipitation all snow.

第二次大风暴来了 3月23日 produced a merger between a major storm in the southern branch of the steering winds and a northern branch system, causing it to track slowly from eastern South Dakota through Iowa and Wisconsin over a three-day period. While there was enough warm air involved to push temperatures above freezing in the southern two-thirds of Minnesota, the large amount of moisture available and the initial cold air allowed the northern two-thirds of Minnesota to see at least 8-12英寸 of snow. While there were more than 20 inches total to the west of Brainerd and from the Duluth area along the North Shore, St. 澳门威尼斯人娱乐城获得了12个.9英寸 圣路易斯市第19次最大的单场暴风雪降雪. 云 (there have been only 25 storms producing a foot or more of snow in St. 云记录).

2023-2024年的总降雪量现在是31.9英寸，还是11英寸.比三月份的平均水平低2英寸. 然而，总St. 云 snowfall before the late March storm pair was only 13.7英寸，也就是 倒数第二的St. 云季节性降雪 如果它能持续到四月. So, the only back-to-back cold seasons that appear both in the snowiest top 10 and the least snowy top 10 are 1967-1968 (16.1英寸，第三低)及1968至1969年(66.9英寸，并列第10位). 的re have only been 21 days with measurable snowfall so far this cold season, 在美国排名第19位. 云记录.

的 presence of a snow cover put a chill on the generally mild temperatures experienced during this cold season. After having only 12 of the 91 days from December through February being colder than average, 3月最后15天中有12天的气温低于平均水平. 然而, the strong sunshine this late in the cold season ensured that only one day had a low in the plus single digits and one day had a high in the 20's. 的 snow pack, which was 8 inches at its highest, helped to keep temperatures down by reflecting much of the incoming sunshine back to space and causing some of the sun's warmth to be used up melting the snow.

有纪录以来最热的十一月至三月

在寒冷来临之前, March was running at a similar warm pace to earlier winter months (10-15 degrees warmer than average). 三月份的气温出现了两次主要的高温激增 during the first half of the month: a record-breaking first three days, 包括3月30日的70华氏度高温, St. 云层有记录以来最早的70度高温, 3月10日至12日是另一个非常温暖的时期, 包括68度的高温. That pushed the number of record warm temperatures broken or tied to 28 this cold season (see table below).

创造或追平28项纪录

总的来说,圣. 云三月份的平均气温是34度.1度，4度.比平均温度高9度. 这是自圣保罗以来最热的第20个三月. 云温记录始于1881年. 尽管三月下旬是寒冷的季节，但是 十一月至三月气温 是30.3 degrees, beating the previous record (2011-2012) by 0.7度. From the highlights below, note that this winter is on pace for several notable mild marks. This includes having the coldest temperature for this winter (-13 degrees during our 一月中旬感冒爆发) being the 2nd mildest and tying the fewest days (10) with 零度零度或更低.

• 三月雪景
  • 3月21-22日:5.3英寸的绒毛
  • 3月23日: 12.9英寸, 圣路易斯市第19次最大的单场暴风雪降雪. 云
  • 40 days with at least an inch of snow on the ground (5th fewest on record, fewest since 1986-1987)
  • 21 consecutive days with at least an inch of snow on the ground (6th shortest streak, 平均为84天)
• 极端温和的冬天
  • Mildest low extreme of entire winter: 2nd on record behind 2001-2002 (-9)
  • Least lows of 0°F or colder (tie): 10 days in 2011-2012
  • 最低气温32华氏度或更低:2015-2016年有143天
  • 2011-2012年最低气温为32华氏度或更低:49天
  • 3月3日最高华氏70度
    • 与1905年3月3日创下的60华氏度最高纪录持平
    • 最早的70华氏度，1987年3月6日
• 潮湿寒冷季节
  • 12月至3月最潮湿的第10次 (6.26 inches; record 8.(1897-1898年为68英寸)

12月至3月是圣. 云记录

这两场风暴在圣路易斯市造成了强降水. 云，如上所述. 3月总降水量为1.72英寸，0.比平均值高15英寸. That precipitation has been relatively rare since the start of the year (有可测量降水的11天), but those few days have produced relative heavy precipitation for the colder months (至少1 / 4英寸，6天). 添加到 有史以来最潮湿的12月, St. 云的 total precipitation since December has been 6.26 inches, the 10th wettest December through March in St. 云记录. 的 average for four of the normally driest months is 3.82英寸.

的 wet cold season has been unusually helpful to the moisture supply. Usually, the bulk of winter precipitation falls when the ground is frozen. So, 融雪可以帮助河流和湖泊恢复活力, but usually melts and runs off before it can seep into the ground. 去年是个罕见的例外. 这个寒冷的季节, the frequent temperature excursions well above freezing has allowed most of the precipitation to easily seep into the ground. Even our late season snow fell when most of the frost was out of the ground, 所以它也有助于地下水的供应. This has been important since much of Minnesota was coming off a very dry late spring and summer (compare this week's US Drought Monitor to the start of October).