Tropics Starting To Bubble Before Hurricane Season Even Hits

From left to right: Hurricanes Katia, Irma and Jose last year. 

Last year in the Atlantic Ocean, the hurricane season was horrific.

Harvey. Irma. Maria. I shudder just thinking about those deadly, destructive storms.

Hurricane season starts May 15 in the eastern Pacific Ocean and June 1 in the Atlantic Ocean, but there are already signs that things might start to get active soon, even before the officials start of the tropical storm season.

There won't be anything like Harvey or Maria in the near future, thank goodness, but there a couple things worth watching

There's a decent chance a tropical storm could form in the eastern Pacific, off the coast of Mexico in the coming days. Most of storms that form there don't hit land but a few do. If this particular disturbance forms, it will be the second year in a row a tropical storm formed there before the May 15 "official" start to the season.

In any event, if this storm gets going, forecasters say it won't last long and won't hit land.

Meanwhile, in the Atlantic, some computer models are suggesting something might get going in the western Caribbean Sea late next week. I'm not counting on it though. Other computer models have nothing there next week.

However, water temperatures in the western Caribbean are warmer than normal for this time of year and are toasty enough to support tropical storms. Also, this time of year, the jet stream is usually far enough south to rip apart any tropical storms that try to form in the Caribbean, but the jet stream is expected to be further north than usual for a time next week, which could offer a window for tropical storm development.

Off the coast of Chile, a subtropical storm formed this week. That's very rare, since ocean waters off the Chilean coast are usually too cold to support any kind of tropical system. (Tropical storms and hurricanes need very warm water to form and thrive.)

A rare subtropical storm off the coast of Chile this week.

Subtropical storms have characteristics of both tropical storms and normal average everyday storm systems.

Such a storm had not been seen off the coast of Chile until now. Some may have formed in the past, though, before there was decent satellite imagery coming from that area in the southern hemisphere.

Even if the hurricane season gets off to an early start, that doesn't necessarily mean this will be a busy, destructive season. It's partly a matter of luck. If any big hurricanes form, will they stay out to sea or hit land?  Will weather conditions and water temperatures conspire to give birth to lots of storms later this year? Nobody knows for sure.

For what it's worth, Colorado State University puts out hurricane season forecasts every year, and they're predicting a slightly above normal season in the Atlantic. The Weather Company, parent of the Weather Channel, predicts a near average season. 

One thing to note: Some of last year's most destructive Atlantic hurricanes developed explosively. They went from nothingburgers to monsters in days or even hours.   Some scientists are saying this kind of rapid, dangerous development could become more common as oceans warm under the influence of global warming.

Meanwhile, we're in the heart of the severe storm and tornado season in the United States. So far, it hasn't been too bad. As of today, there have been 317 reports of tornadoes in the United States in 2018. That sounds like a lot, but it's actually below average.

Maybe that trend will continue?