John traces his early interest in weather to the difference in climate between Alabama and Wisconsin.He is a graduate of Iowa State University with a degree in meteorology.Avid "Seinfeld" fans might remember the episode when Jerry's friend, George, was desperately trying to find a way to postpone his impending Christmastime wedding with his fiancee, Susan. In fact, did you know that during the 20th Century, March 21 was actually the exception rather than the rule?He finally comes up with a solution: "Have the wedding on March 21 - the first day of spring! While it's true that we've traditionally celebrated the beginning of spring on March 21, astronomers and calendar manufacturers alike now say that the spring season starts one day earlier, March 20, in all time zones in North America. The vernal equinox landed on March 21, only 36 out of 100 years.Summer is gaining the minute lost from spring, and autumn is gaining the half-minute lost from winter.Winter is the shortest astronomical season, and with its seasonal duration continuing to decrease, it is expected to attain its minimum value - 88.71 days - by about the year 3500.
The Sun's apparent diameter is roughly equal to half a degree (0.50 degrees).
Like any meteorologist, John is intrigued by extremes of weather, especially arctic air outbreaks and winter storms.
John has been known to say he prefers his summers to be hot but in winter, he prefers the cold.
" Unfortunately, if George had gone through with the nuptials (and Seinfeld aficionados know why he never did), he would have been a full day late. I mean, when we were all growing up, the first day of spring was always on March 21, not March 20, right? And from 1981 to 2102, Americans will celebrate the first day of spring no later than March 20.
You see, in America, spring no longer falls on March 21. In the years 20, those living in Alaska, Hawaii and the Pacific, Mountain and Central time zones will see spring begin even earlier: on March 19.