(2) Unusually Cool Summer
I remember chatting with folks about what they remember most about this past years weather, and more than 50% responded with the cooler summer conditions. It was only three years ago when we experienced one of the hottest July’s in recent history (avg. high of 90.3 degrees in July 2006), and that made my yearly countdown list. Well, turnabout is fair play and the cooler temperatures during the summer of 2009 ranks number two on my list. Here are some reasons why:
- one of the top five coolest July’s in Eau Claire
- very low number of severe weather days
- four days with a record low-high temperature
(1) Well Below Average Yearly Precipitation
It seems like this is becoming an annual topic here in western Wisconsin – the lack of “normal” yearly precipitation. “What is normal?” you may ask. Average annual rain and snow should total about 32″ from January through December. Now, it isn’t unusual for the winter months to be drier because the air in the atmosphere is much drier. During the spring and summer months, however, moisture from the Gulf of Mexico (and to a lesser extent the Pacific Ocean) flows north into the upper Midwest. This moisture is then used by frontal boundaries and upper air systems to produce our rainfall during the warm season. Here are a few factors that led me to my decision to make this the number one weather event of 2009:
- a deficit of SEVEN inches from normal
- 9 out of the 12 months were BELOW average
- widespread SEVERE drought conditions for much of the summer
There they are . . . the top five weather happenings of 2009. All in all, much of the year was pretty quiet. What does 2010 hold in store for western Wisconsin? I guess we will find out in the coming months!
Chief Meteorologist Doug Michaels
Posted under Hometown Weather
This post was written by dmichaels on January 4, 2010