Mar 23, 2009

Spring Has Arrived

This past week was warm, relatively speaking. Four consecutive days saw max temps 50° or above. Mar 17 had the third highest max temp ever recorded at OSNW3 in the month of March, topping out at 64.2°. We also saw the season transition from Winter to Spring this past week which in the end brought an accumulating snowfall on the first day of Spring. (OSNW3 March Observations)

(Temp Comparison 2008 / 2009 | March 1 - 22)
Max temp: 34.2 / 38.3 / +4.2
Min temp: 18.4 / 20.3 / +1.9



(March 2009 Precipitation)
2009 Monthly Total
Precip.. 1.54"
Snow.... 7.6"
Oshkosh Average
Precip.. 2.18"
Snow.... 7.6"
Departure
Precip.. (0.64")
Snow.... +0.0"



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Snowfall Mar 21
Winter delivered a goodbye snowfall

(1.0" measured @ 1:38am on Mar 21 - Total 1.0")
(radar loop / daily video)




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Winter Duration
Winter ended at OSNW3 the same day as Spring began astronomically, Mar 20, 2009. According to the Winter Duration formulas here at OSNW3, Winter began on Dec 10, 2008 and ended on Mar 20, 2009 for a total of 100 days. As Spring takes hold, the Firsts & Lasts data for this Winter season will become complete.

(Winter Season Duration 2008-2009)


(OSNW3 - Mar 10-18, 2009)


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Climate Research
With my recent "Data Bounty" I started a couple projects of climate research. Two of them are explained below.

--Below Zero Temperatures
As this Winter comes to an end for most of us, I would like to remember the most recent cold snap. Timothy, Nathan (see his cbox), Derek, and Dirk followed the chilly air as some of the coldest readings took place in their areas. With the cold air hanging around a few days I was inspired to search out consecutive streaks of below zero readings for my area.

(Consecutive Days)
OSNW3 Oshkosh-North (6)
OKHW3 Oshkosh-WWTP (19) *official nws data for oshkosh

(OSNW3 - Days with Min Temp Below Zero)


--Maximum Snowdepth
In the data for OKHW3 Oshkosh-WWTP, consecutive days with temps below zero, there is a date that stands out to me. Feb 13, 1936 as it has a reported snowdepth of 28" (it's highlighted in yellow). Listed below are the highest daily snow depths from the official COOP station for Oshkosh, OKHW3 Oshkosh-WWTP, dating back to 1902. (I obtained the numbers by using the NOWData portion of the Climate index on the NWS GRB site)

OSHKOSH (476330)
Extremes
Highest Daily Snow Depth (inches)
Days: 1/1 - 12/31
Length of period: 1 day
Years: 1902-2006


Rank - Value - Ending Date
1 - 30" - 2/3/1971, 2/2/1971
3 - 29" - 2/4/1971
4 - 28" - 2/16/1979, 2/15/1979, 1/28/1979-1/24/1979

Only periods with no missing data were evaluated.
Last value also occurred in one or more previous years.


The deepest snowdepth I've measured here at OSNW3 is 16" on Feb 19, 2008 (photo). I know Nathan had some deep snow pack up on Maple Hill this season, 23.1" on Jan 20! See his blog entry for more details.

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Front Of House
It's Spring! AND, if you live in Oshkosh make sure to vote YES! :)

(FOH - Mar 22, 2009)