I'm pulling double duty on this month's summary. With the books officially closed on the 08-09 water year, I'd like to share some water year data with you. First, let's start with this month.
As in my previous post, this month shows more of the same in the precipitation department. We ran another surplus, but only after following a 31-day period of 0.31". Late in the month, an upper level low spinning in Colorado offered us the relief we needed, and my lawn responded with vigor! Each mow, now I am thinking, "Is this the last time?" Let's hope this weekend is the last.
Overnight, a warm front lifted NE through the area, giving us a milder start to the day than the previous few mornings (temps in the 60s rather than 40s), currently, there is a wide swath of rain and storms spreading from Texas to Missouri, and into Montana. Quite impressive indeed. There is thunder in the area, and we are sure to get the first precip of WY 09-10.
September Observations can be found here
September offered us very comfortable temperatures. We started and ended the month a bit on the cool side, but we stayed around average through the middle of the month.
High: 83° on 9/11 and 9/27
Low: 44° on 9/29 and 9/30
Mean High (average): 76.2° (79.1°)
Mean Low (average): 57.0° (55.4°)
# of Days Above Average High: 6
# of Days Below Average High: 20
Average Precip: 3.68"
September Precip: 4.28"
And our yearly totals so far...
2007 - 2009 September Comparisons
In a comparison to the previous two years, you can see a remarkable difference in rain amounts. Last year, the tropics were extremely active, and we had two tropical depressions impact our area. One even came right through Missouri! The result of that is easy to spot on the graph. 2007, on the other hand experienced some extreme drought (if you'll remember, that was the same year with the devastating Easter Freeze).
September Days with Thunder: 2
I took some time over the weekend to generate some disaggregated data concerning rainfall amounts. I was interested to know the frequencies in which we experienced heavy/light rainfall events. I'm excited to have these data now. Thanks to OSNW3 for showing me some cool features on Excel.
January - August 2009
Days With Precipitation
Water Year 2008 - 09 Summary
Yearly Precipitation Average: 41.22"
WY 2008-09 Deviation: +6.00"
Links to Monthly Summaries: