2016/06/27

2016 Precipitation so far

In the last few weeks I've looked at Edmonton's entire recorded history of precipitation, and at when during the year we get that precipitation. Today will be one final look at precipitation, with a scorecard to see how 2016 is doing.

I've used this chart before, and like it quite a bit.


In the last 20 years 1996 was the high, 2002 was the low, and at this point in 2015 we were quite a bit behind where we are in 2016.

Here's the same basic data, but converted to my usual highs/lows/quartiles/average format.


As I've done previously, the grey band is the 25-75th percentile, the highest since 1995 is in green and the lowest is in yellow.

For most of 2016 we were below the 25th percentile and near the recent minimum. But the very rainy Victoria day weekend pushed us up above the average. Since then we've been roughly keeping pace with the average.

Here is the same chart, expanded for the entire year.


Depending how things go, at this point we're probably a bit below the halfway point for the year.

The calendar year-to-date is interesting, but since we are only in July there are 6 months missing. So here are the cumulative totals for the last 12 months, from July to July.


And after 12 months we are sitting right around the average. Although without the 100mm from the extremely raining Victoria Day weekend, we would be well below that.

Finally for today, here is the calendar-year cumulative precipitation graph from earlier, but redone to include the all-time maximum, as well as the average from the 1960s through the 1990s.


The all-time maximum of 745mm is from 1900, which we've previously seen was the record year.

And I've mentioned previously that since about 2000 our precipitation has been below what had been typical for the 4 decades before that. Our recent average is about 400mm/year, compared to 470mm for 1960-2000.

No comments:

Post a Comment