2010年11月圣克劳德天气摘要

第三温暖的十一月

    的 "If you don't like the weather, wait a month" weather pattern continued 在2009年11月. St. 云紧随其后 第九冷的夏天 与它的 11日最热 和 第三干旱九月, 9日冷, 10日雪, 第三个最潮湿的十月 现在是有史以来第三热的11月. 这里的平均温度. 云地区机场是39.3°F, 10.比正常温度高5°F. 本月平均气温(最高)为49.5华氏度，最低29度.2°F)是典型的 10月28日. 这也 在过去9个11月中的8个 .比正常温度高.

    九个 每日纪录高温 都是在十一月设定的, including two days during November 11-13 with an average temperature near 50 degrees, three straight days with record warm lows during November 22-24. 29 of the 30 days had temperatures warmer than normal with 17 days more than 10 degrees warmer than normal. Only 11月3日 had a colder than normal temperature. 虽然没有高温记录, 上一次气温达到50度的是11月23日, 在最近的10%之内 最近的50度高温 这个季节.

    Most of November was spent sitting at the second warmest November. Between November 1-24, average temperature was 41.1°F，在0.2001年11月7华氏度， 最热的十一月 过. 然而, cooler weather over the last 6 days knocked the average temperature below the 39.1899年的5华氏度.

R过sal of Steering Winds Changes From Cold October Pattern

    的 reason for the r过sal 从 October's chilly conditions was a switch in the steering winds. 的 11月15日，一万八千英尺高空的风向 从 HPC的每日天气图 显示了科罗拉多和新墨西哥边境的低气压. This means that the winds 从 the southern Rockies through most of the US are blowing parallel to the brown lines 从 southwest to northeast. That means that our weather is tending to come 从 the American Rockies. Air traveling that route has lost most of its moisture as it climbed the west side of the mountains, 然后在东边下沉时变暖. That creates a lot of warm air with very low dew points. So, 明尼苏达州上空的温度 on that day climbed well into the 40's for highs 和 held in the 20's for lows. 的 southwest steering winds also kept any cold air trapped in northern Canada, 阻止它到达这里.

温暖传遍明尼苏达州和美国

    的 11月温暖 在明尼苏达州广为流传 明尼阿波利斯. 保罗录得第二热的11月， onInternational Falls had its second warmest November on record, 德卢斯 和欧克莱尔的11月是第三温暖的. 爱荷华州的大多数电台 是最温暖的10个11月之一 就像在 密苏里州 . I wouldn't be surprised to see this November rank among the warmest nationally, 但这需要一周的时间来编制统计数据.

St. Cloud's Smallest Temperature Difference Between October 和 November

    想吹嘘一下奇怪的天气逆转? 十一月温暖的平均气温为39度.3°F在1以内.6华氏度，10月平均气温40.9°F. That's the smallest difference between October 和 November 圣保罗气温. 云记录，可以追溯到1881年. 之前的纪录是3次.1917年5个学位，4个.0 degrees in 2001, which had 最热的十一月 过. 在其他年份，11月至少有6个.比十月低4度. 这也是圣. 11月的平均温度为49.5华氏度)，比10月平均最高气温(47.7°F). Every other year has had the October average high at least 4.比11月平均温度高9度.

Many points in the US should achieve this rare feat, given that October was the 全国第三冷的十月 和 November has been very warm through much of the country.

11月干旱让农民赶上进度

    Despite some episodes of fog 和 drizzle, warm weather mainly was dry. 十一月的总降水量在圣. 云区域机场为0.35英寸，1.比正常低19英寸. That dryness pushed the April-November rainfall deficit back over two 和 a quarter inches (precip: 21.27 inches; normal: 23.63英寸). 然而，干燥的条件 对农业至关重要 . 的 dry conditions without a snow cover allowed crops extra drying time so that they could be harvested.

    的 明尼苏达州最新干旱报告 从 the State Climatology Office shows a long term drought in the St. 到泰勒瀑布和 2009年最干旱的情况 在明尼苏达州的中北部. Stearns County remained one of the few wet areas in central Minnesota with above normal growing season rainfall, but the wettest conditions were in the Upper Red 和 Minnesota River Valleys. That's the reason that the Red 和 Minnesota Rivers show streamflow in the highest 10%, 根据最新的 美国地质调查局WaterWatch . 的 dry November hasn't hurt streamflow much in eastern Minnesota as most of the St. Croix 和 Upper Mississippi Valley have near normal streamflow.

11月几乎没有雪，与近几年相似

    11月只下过一点雪. 这标志着 11月13日 观测到的降雪量或少或少. 11月的正常降雪量是8.9英寸，但这条很有条纹. 在那里 自2004年以来只有一个11月 超过一英寸半. 然而, 1988-2003年11月16日中的10次 至少下了10英寸的雪.

Change to December Marks Major 天气 Pattern Change Again

    然而，我们的“乐趣”就要结束了. 让我们看看 天气预报500mb图 将于周二晚上在北美上空出现. 周二晚上). Note the steering winds over western Canada blowing north to south on the eastern flank of a strong high pressure system over Alaska. This high is already developing now 和 is expected to intensify over the next week, steering cold air 从 north central Canada into the Northwestern US. 事实上, this particular outbreak will produce a rare surge of cold air into the populated valleys of Washington state 和 Oregon. Fortunately, it hasn't been really cold in northern Alaska with 高温一般在零度以上 一直到北极海岸 低于零度的低温 在每年的这个时候很难找到. This, how过, should be cold enough to keep temperatures 比正常温度低一点 在接下来的一到十天里.

    真正的冷空气在哪里? 的 Unisys的北半球气团图 shows that the coldest air is situated over Russia 和 interior Siberia. That air is even colder than any air over the North Pole. This high will make it harder for the air over Siberia (temperatures, 不幸的是，是几乎难以辨认的浅蓝色, 一直在零下三四十度跑步吗 国家海洋中心的太平洋表面地图 ) to move into North American, limiting how cold we can get for at least the next week.

    风暴很难提前预测, but this generally dry flow will make it hard to get widespread significant snowfall, despite the fact that we got the snow that stayed for the rest of the winter by 去年冬天的12月6日 并通过 2007-2008年12月1日 . In both cases, snow cover lasted until the end of March.

2009年11月，化身变暖变干    

    Meteorological fall (September through November) is now in the books, even though each month felt like a season of its own. 他们是怎么做到的? 最温暖的九月 和 第三干旱九月, 9日冷, 10日雪, 第三个最潮湿的十月 和 第三温暖的十一月 平均? 比平常暖和，但是 不在前十.

    温度为47度.8°F,圣. 云是4.比正常温度高0°F. This ranked as the 22nd warmest fall out of the 129 years on record. 在最近的温和下跌中，2004年( 9日最热), 1998年(最热第十位), 2001年(最热第十一), 2005年(最温暖的第十五位), 1994年(第16个最暖年份)的排名都更暖.

   两者的结合 第三干旱九月, 第三个最潮湿的十月, a very dry November produced a fall precipitation of 6.98英寸，6英寸.其中的01个在10月份下跌. 总数是0.比正常高27英寸. 尽管 11月大做文章在2009年秋天，最终的结果是2.5英寸厚的雪，多亏了 圣二. 云最早降雪 10月. 2.5英寸变成了7英寸.2 inches below normal, but as noted earlier, this has been a common conditions over the past 6 years.