2012年1月圣克劳德天气摘要

2012年1月圣克劳德，MN天气摘要

8th Warmest January, Second Warmest 12月-January Combined

的 mild winter weather that began in 12月 continued throughout January. 根据St. 云 Regional Airport, average temperature 2012年1月 was 20.3°F, 8.比正常温度高5°F. 这使得2012年1月成为St. 云的 8th warmest January since temperature records began in 1881. Adding in the warm temperatures of last 12月 (9.比正常温度高1°F), the first months of the winter season are the 全港第二热. 云记录 平均气温22度.7°F, nearly ten degrees warmer than the 120 year average. 的 only cold season that had a combined Dec-Jan average even warmer was in 1913-1914. That average temperature shared in the past two months would be more typical of 2月下旬, 3月初, or 11月下旬 而不是一年中最冷的日子.

This also marks 7 straight months with an above average temperature.

而 过去的三个冬天 比平时冷吗, cold season of 2011-2012 continues to remind us of the milder cold seasons that dominated the late 1990's and early 2000's. 事实上，2002年1月和2006年1月(有记录以来最热)的气温高于2012年1月

Nearly As Many Highs Above 45 Degrees As Seen In Any January Since 1950

一月份最热的时候 在最初的11天里，当什么小雪覆盖圣. 云融化了. 再加上一些和风的日子和圣. 云 broke 50 degrees for a high twice and 40 degrees 3 more times. 的 first 50-degree high temperature was set on 1月5日 with a high of 53 degrees. 这个温度不仅 打破纪录 日期(相差10度) but beat out January 7, 2003, as the earliest 50-degree high in St. 云天记录. 的re have only been 3 January high temperatures that have been warmer, with the warmest 高达56度 1981年1月24日. A second 50-degree high was recorded on 1月10日. 的re have only been 10 50-degree highs in St. 自1881年有记录以来的云量. 2012年1月 tied the Januaries of 1944 and 2003 for 有两次50度的高温. 的 4天最高至少45与1931年1月持平，排名第四. 的 most 45-degree highs 1月 was set in 1942.

的re were 3 daily record highs set and 7 total warm record temperatures 1月. 的re have now been 10 daily high temperature records set or tied during this cold season, 两者皆可 12月 或1月.

在零度以下的低温下远低于平均水平

Colder air did temporarily move in after 1月10日. 的re was another warm-up with a high of 38 degrees on 12月 15, but St. 云 finally sustained a small snow cover during the second half of January. 的 snow cover combined with colder air to finally produce 5 straight days of colder than normal temperatures on January 17-21, 包括5天的假期 0°F或更低, including a -17°F low and a 3°F high on 1月19日, coldest day of the winter so far. 然而, that was the end of colder than normal weather for the month.

最后是长时间的积雪

到目前为止，在2011-2012年的寒冷季节，圣. 云只出现了7天 0°F或更低, 总数第四低 整个1月份气温都在零度以下. 的 only years that had few were 1903-1904 (0 lows), 1907-1908 (3 lows), and 2001-2002 (5 lows). 提醒一句, 然而: of the seasons with the 11 fewest days 整个1月份气温都在零度以下, seven seasons had more sub-zero lows in February and March combined than through January. In fact, six of the 11 years had at least 10 more days of sub-zero lows in February and March. 所以，我们还没有脱离险境.

的re was finally some snowfall 1月 with a total of 9.5英寸，1.比一月份的正常值高出6英寸. 的re were 10 days with measurable snowfall 1月, more than the January average of 8.6天. 然而, seasonal snowfall by the end of January totalled only 16.2英寸，11英寸.比平均值少8英寸. 已经有了, 然而, 36 cold seasons with less snowfall through January, including the recent cold seasons of 2006-2007 (4.7英寸)，2002-2003年(11英寸).6英寸). 2007-2008年，这一数字为16.到一月底，积雪只有2英寸.

一月份的雪 .59 inch of liquid, slightly below the average of 0.65英寸. This marks the fifth straight month of below average precipitation, but it was the closest to normal of any month since August.

尽管有拉尼娜现象，天气仍然温和

气候 indicators still show that we are in the midst La Nina cold season, with 比正常水温低 in the eastern part of the Tropical Pacific In such years, steering winds over North America tend to come from Alaska and northwestern Canada, favoring repeated intrusions of cold air masses 在冬天. This was the basis of the long-range forecasts made for the winter in November and earlier. 然而, steering winds this winter have ended up looking like an El Nino year (when water temperatures in the eastern Tropical Pacific are normal than normal). In such years as well as this year,re tends to be a strong belt of steering winds from the central Pacific 横跨美国南部 就像现在一样. 也,re is a branch of the steering winds in Canada that blocks the southward push of cold air further south than central Canada, 现在又发生了什么.

In such a pattern the cold air tends to stay in Alaska or northern Canada for long periods of time. 这就是帮助生产的东西 破纪录的寒冷一月 in much of northern Alaska, including Nome, Galena, and Bettles (with an average temperature of -35.6度). 费尔班克斯有它的 有记录以来第五冷的一月 只有3天气温高于零.

到目前为止,re are signs that we could see some push of the colder air further south into Canada, but no clear signal that the really cold stuff will spend a long time in Minnesota through the first two weeks of February.