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Showing posts from September, 2011

Near Stationary Cut-off Low

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I took the opportunity to get out in the elements with mother nature as the area faced it's first real taste of a fall storm system. The nearly stationary low blew consistent northeasterly winds the morning of Sep 26. Gusts close to 30 mph stirred Lake Winnebago initiating a moderate wave event on it's western shores.



Some Photos. (Sep 26, 2011)




Some Videos. 4 new ones. (Sep 26, 2001)


The precipitation from this low pressure thus far has tallied 1.23", dropping measurable precipitation on six of seven days. The NWS GRB labeled it as 'pesky', I guess after seven days it could become a bit pesky. Overall though, the weather hasn't been all that nasty. Sep 26 was really the only harsh day. To view the radar loop of the storm entering into the US and then deciding to cut off, click here. (20MB)

Once it turned from cloudy, raining, and windy to sunny and calm on Sep 26, I captured this satellite image. Impressive.

The End Of A Dry Spell & New 30 Year Averages

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The morning of Sep-19, after 13 consecutive days, we finally recorded measurable precipitation. Most will think that 13 days without measurable precipitation is just the tip of the iceberg, but here in the western portion of the Great Lakes basin we seldom deal with such longevity. Since the genesis of OSNW3, back on Nov 1, 2006, we've recorded just 8 streaks of 13 or more days without measurable precipitation, just 7% of the time. For more information see graph and list below. (day of the streak end is listed)


4 streaks of 13 days
Sep-18, 2011
Apr-2, 2010
Nov-18, 2009
Sep-29, 2008

2 streaks of 17 days
Oct-20, 2010
Apr-18, 2009

1 streak of 19 days
Feb-23, 2007

1 streak of 21 days
Sep-20, 2009

These types of streaks do not always lead to drought situations, but with the recent lack of precipitation in the past two months some of Wisconsin is now in a slight drought situation. The recent rain may have helped as most around the state recorded up to a half an inch or more. Below is a map …

How Was Your Summer?

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OSNW3 Meteorological Summer Statistics

Precipitation
In 2010 OSNW3 ranked second all-time for the wettest meteorological summer in Oshkosh history with 20.41 inches falling during the months of June, July, and August. In 2011 OSNW3 measured 10.36 inches coming in 44th all-time. 0.23 inches below the all-time average of 10.59 inches for the 103 years of data without a missing precipitation observation during the meteorological summer months. This particular data may come across like we had a 'dry' summer, but on 36 days we here at OSNW3 recorded measurable precipitation. Just short of the top ten, coming in at 11th for the most days with measurable precipitation all-time. Providing a some what active three months. More meteorological summer precipitation numbers can be found by clicking the image below. Annual precipitation numbers can be found here.

(Oshkosh Meteorological Summer - Precipitation)

Temperature
Here at OSNW3, 2011 finished 0.9 degrees cooler than 2010, ranking 28…