BATON ROUGE mdash; While it is easy to assume that the cooler, wetter conditions typical of an El Nintilde;o winter bring a higher chance of snow to the Baton Rouge area, historical climate data show that this is simply not the case.Since 1950, when El Nintilde;o recordkeeping began, snow or sleet has been observed in Baton Rouge approximately 51 times. The majority of those wintry weather events did not coincide with an active climate phase: 40% of all observations occurred during neutral periods when neither El Nintilde;o nor La Nintilde;a was present.When comparing the two active patterns directly, El Nintilde;o is more likely to generate wintry precipitation than La Nintilde;a. Roughly 35% of snow or sleet observations in the capital city took place during an El Nintilde;o winter.Freeze counts tell a similarly nuanced story across southern Louisiana. The Baton Rouge area experiences freezing temperatures around 20 times per year, with a typical variance of plus or minus eight freezes per season.The all-time record of 37 freezes in a season was set during the El Nintilde;o winter of 1977.nbsp;Despite that individual record, La Nintilde;a winters hold more spots than El Nintilde;o in the top 20 rankings for total winter freeze counts.The parity between the two patterns comes down to fundamental differences in atmospheric dynamics. During an El Nintilde;o winter, an active subtropical storm track sets up over the capital region, producing persistently wet weather that holds daytime temperatures down under dense cloud cover and rain.By contrast, while La Nintilde;a winters tend to be warmer and drier on average, they often cause the jet stream to buckle sharply from north to south. Those dramatic ripples in the storm track allow brief but intense blasts of Arctic air to plunge deep into the South, creating short windows for freezing temperatures and winter precipitation.Permalink| Comments ...read more read less