September 2010 Saint Cloud Weather Summary
Thunderstorms Produce St. Cloud's Third Wettest September
September 2010 Saint Cloud Weather Summary
St. 九月的大部分时间里，云层一直处于暴风雨天气模式, producing the rainiest September in 25 years. The rainfall at the St. Cloud Regional Airport totalled 7.16英寸，几乎是9月份正常降雨量的2.5倍.93 inches. This ranked as the third wettest September in St. Cloud records and the wettest since 1985. The combined August-September rainfall in St. Cloud was 13.52 inches, good enough for 4th place . 最高的是1926年8月和9月的17次.94 inches.
For the year, St. Cloud has received 27.85 inches of rain, more than the annual average of 27.27 inches. That's also more than the entire years of 2003 and each of 2006-2008.
August Stormy Pattern Continued With St. Cloud On the Cooler Side
暴雨是由于8月份持续的暴风雨造成的. 在夏季的大部分时间里，明尼苏达州中部一直处于加拿大相对凉爽干燥的空气和美国中南部和东南部大部分地区炎热潮湿的空气之间. 与8月相比，9月模式的变化是平均锋面位置比8月进一步向南移动, so St. Cloud had much less severe weather, 但更频繁地进入强降雨地区，而在夏季的大部分时间里，强降雨地区经常在更南部地区形成.
明尼苏达州9月降雨量破纪录，但圣路易斯市北部降雨较少. Cloud
9月份，明尼苏达州几乎所有地区的降雨量都远高于正常水平 highest average statewide rainfall 根据明尼苏达州气候办公室的数据，自1891年有记录以来. The average rainfall of 6.46英寸比1900多出四分之一英寸. The state average was enhanced by a swath of 明尼苏达州南部全州降雨量达10-13英寸 just to the south of the Minnesota River. 在明尼苏达州中部，雪本县的大部分地区出现了超过7英寸的巨大变化, 但在斯特恩斯东北部和莫里森县的大部分地区只有4-5英寸. 然而，即使这些较低的总数也超过了月平均水平. This heavy September rainfall followed a 整个州多斑地区的夏季非常潮湿 . 像松城和底特律湖这样的地方在夏天降雨量超过20英寸, 接近年降雨量的四分之三.
你会相信箭头仍然干旱吗?
On the other hand, 九月份降雨量最少的(3-4英寸)是从布雷纳德湖到箭头湖. 该地区，特别是莱克县和库克县，继续遭受一场 moderate to severe drought, 根据国家抗旱中心的统计数据. 在这个生长季节，这些县北部的边界水域的降雨量不足4-6英寸. Earlier this summer, the entire 苏必利尔湖盆地处于美国最严重的干旱条件下 由于两年多来的降雨量低于正常水平，但8月和9月的暴雨已经造成了严重的影响 大大缓解了苏必利尔湖南岸的短缺 .
9月22日至23日发生山洪暴发和河水泛滥
对9月份的强降雨总量贡献最大的是 heavy rainstorm on September 22-23 . 近4英寸的降雨量覆盖了该州南部三分之一的地区 8-12 inch rainfalls from the Buffalo Ridge to the south of Mankato. Rainfall reached 11.温尼贝戈(法里博县)附近6英寸和10英寸.68 inches in Amboy (Blue Earth County). The St. 云机场错过了这些风暴的第一波降雨，所以风暴总数为1.57 inches with 1.52 inch on September 23, just 0.08 inch short of the daily rainfall record .
从派普斯通到赞布罗瀑布，暴雨在明尼苏达州南部的几个城镇引发了山洪暴发. 明尼苏达州的几条小溪和河流的水位都创下了历史新高, a rare occurrence outside the snowmelt season. 随着雨水进入明尼苏达州和密西西比河下游，洪水也发生了.
Fortunately for the moisture situation, 9月的最后一周和10月的第一周产生了更加干燥的天气模式, 让河水从九月底洪水后的峰值回落.
Biggest Area Rainfall on September 2
Another serious rainfall on September 2 在弗利带来了高尔夫球大小的冰雹，清晨在萨泰尔带来了时速62英里的阵风. That produced St. Cloud's heaviest rainfall of the month, 1.96 inches of rain, which would have broken a daily rainfall record 是发生在第一天还是第三天. 这并不是今年以来最大的暴雨.72 inches had fallen on August 12-13 .
Rainfall Records Tied and Broken
St. Cloud did tie a daily rainfall record with 1.9月6日的降雨量为56英寸，创下了1英寸的降雨量记录.58 inches of rain on September 15. In all, there were 4 days in September with at least an inch of rainfall今年9月的降雨量与1914年和1926年持平，是仅有的两个降雨天数最多的9月.
多云和频繁的降雨意味着九月凉爽的高温
前线更靠南的位置使圣. 阴云在较冷的空气中更常见，因此9月平均气温为56度.8°F, 0.6°F cooler than normal. 在平均66度的高温中，这种凉爽感尤为明显.6°F, 4.比正常温度低0°F，而最冷的平均最高温度为0°F. Cloud has had since 1993. 持续的云量和湿度导致了凉爽的平均高点. 在9月的30天中，只有9天的最高气温达到了70华氏度以上. 德卢斯也很少有70度的高温记录 in September.
高湿度使圣. Cloud Airport. 10月3日气温达到30度，初霜早已过去 the average date of the first frost (Sept. 22日)，相当接近最近10%的霜冻(10月22日). 6). 然而，明尼苏达州中部的一些地方在9月6日接近冰点. 22 and broke freezing on Sept. 26. Here are the average first frost dates statewide from the State Climatology Office.
|
Temperatures (°F)
|
September 2010
|
Normal
|
|||||||||
| Average High Temperature (°F) |
66.6
|
69.0
|
|||||||||
| Average Low Temperature (°F) |
46.9
|
45.7
|
|||||||||
| Mean Temperature for September (°F) |
56.8
|
57.4
|
|||||||||
| Saint Cloud's Ten Warmest/Coldest Septembers | |||||||||||
|
Temperature Thresholds
|
Number of Days
|
Normal
|
|||||||||
| September 2010 Days with High Temperature of At Least 90°F |
0
|
0.99
|
|||||||||
| 2010 Total Days with High Temperature of At Least 90°F |
0
|
11.58
|
|||||||||
| September 2010 Days with Low Temperature of 32°F or lower |
0
|
1.70
|
|||||||||
|
September Temperature Extremes
|
Temperature(°F)
|
Date
|
|||||||||
| 2010年9月最高气温(°F) |
77
|
September 12
|
|||||||||
| 2010年9月最冷高温(华氏度) |
56
|
September 15
|
|||||||||
| 2010年9月最低温(°F) |
56
|
September 10,23
|
|||||||||
| 2010年9月最低温(华氏度) |
37
|
September 26
|
|||||||||
|
Record Temperatures in September 2010
|
Temperature(°F)
|
Date
|
Old Record
|
||||||||
|
No Temperature Records Set
|
|||||||||||
|
|
|||||||||||
|
This Year
|
Normal
|
||||||||||
|
September 2010 Precipitation (in)
|
7.16*
|
2.93
|
|||||||||
|
* Third Wettest September in St Cloud Records
|
Saint Cloud's Ten Rainiest/Driest Septembers | ||||||||||
|
2010 Growing Season (April 1 - Sept 30) Rainfall (in)
|
25.08
|
19.81
|
|||||||||
|
2010 Total Precipitation (in)
|
27.78
|
22.76
|
|||||||||
|
Precipitation Thresholds
|
Number of Days
|
Normal
|
|||||||||
| September 2010 Days with Measurable (>= 0.01 inch) Precipitation |
11
|
8.7
|
|||||||||
| September 2010 Days with >= 0.10 inch Precipitation |
6
|
5.6
|
|||||||||
| September 2010 Days with >= 0.25 inch Precipitation |
5
|
3.5
|
|||||||||
| September 2010 Days with >= 0.50 inch Precipitation |
4$
|
2.0
|
|||||||||
| September 2010 Days with >= 1.00 inch Precipitation |
4
|
0.8
|
|||||||||
|
September Precipitation Extremes
|
Precipitation (in)
|
Date
|
|||||||||
|
Most Daily Precipitation in September 2010
|
1.96 inch
|
September 2
|
|||||||||
|
Record Precipitation in September 2010
|
Precipitation (in)
|
Date
|
Old Record
|
||||||||
|
Daily Record Rainfall
|
1.52 inch (tie)
|
September 6
|
Tied record set in 2002
|
||||||||
|
1.58 inch
|
September 15
|
1.13 inch in 1933
|
|||||||||
|
与1914年和1926年并列9月降雨至少1英寸的天数最多(4)
|
|||||||||||
|
Rank
|
Precipitation
|
Year
|
|
1
|
17.94 IN
|
1926
|
|
2
|
16.40 IN
|
1900
|
|
3
|
14.05 IN
|
1985
|
|
4
|
13.52 IN
|
2010
|
|
5
|
13.00 IN
|
1980
|
|
6
|
12.26 IN
|
2002
|
|
7
|
11.92 IN
|
1958
|
|
8
|
11.51 IN
|
1986
|
|
9
|
10.85 IN
|
1941
|
|
10
|
10.34 IN
|
1905
|
