Guess at a Spring Tornado Forecast
Several newspapers have run stories in the last few days pertaining to what type of tornado season (mild, bad) their readership areas might have this year. As you know, I do not post long-range forecasts on the blog because there seems to be so much interest -- I'm going to offer my thoughts on the topic as it pertains to Kansas as the Wichita Eagle (screen capture above) ran one of those stories. Based on some work I did a few years ago, Kansas tends to get more and worse tornadoes when El Nino/La Nina are neutral. This feature is known as ENSO and it is forecasted to be neutral this spring season. The spaghetti on the forecast graph (below) is the result of various oceanographic models' forecasts of sea surface temperatures in the equatorial east Pacific. Almost all forecast neutral conditions this spring. We will likely have an El Nino (positive temperatures > 1°C) by autumn. The article also points out that high contrasts in soil moisture can promote tornadoes. ...