Hurricane season started with a bang—so what does that mean?

Tropical Storm Cristobal made landfall on Sunday evening in southeastern Louisiana, bringing winds, waves, and heavy rainfall to the northern Gulf of Mexico coast. This seems as good of a time as any to take stock of a frenetic start to the 2020 Atlantic hurricane season, and assess what it means for the rest of the year.

Busy start

Cristobal formed on June 2 in the Southern Gulf of Mexico, and this was the earliest ever point in the Atlantic season that the third named storm has formed in a given year. (However imperfect, the Atlantic basin has records dating back to 1851). The previous earliest “C” storm was Colin, on June 5, 2016. Arthur and Bertha, which were both relatively weak and short lived storms, formed this year even before the season officially began on June 1.

This may seem like an ominous beginning to what seasonal forecasters have predicted to be a busy season. But according to hurricane scientist Phil Klotzbach, there is little correlation between early season storms and the total activity (in terms of number of storms and their overall intensity) for the remainder of the year. In fact, the correlation is slightly negative.

Correlation between seasonal activity and first named-storm formation. (Phil Klotzbach)

What this means is that we’re not really going to know the full tale of the 2020 season until about August, when activity in the tropical Atlantic Ocean—known as the Main Development Region—gets fired up. This is the period of summer when we start to watch tropical waves spin off the western coast of Africa, and develop into tropical systems as they migrate westward across the Atlantic Ocean toward the Caribbean Sea. We’re still about six to eight weeks from the opening of this period.

2020 forecast

Klotzbach, who runs the most well known seasonal forecasting program, released an updated outlook on this year’s Atlantic season last Thursday. In this outlook, he bumped up his estimate for named storms this year from 16 to 19. (The average number of named storms in the Atlantic, from 1981 through 2010, was 12). Klotzbach also upped his predicted number of hurricanes from 8 to 9. This would be quite an active year if the forecast verifies.

Klotzbach sees worrisome trends in tropical Atlantic sea surface temperatures this year, and a transition to weak La Niña conditions by later this summer that would be more conducive to hurricanes forming. “We anticipate an above-normal probability for major hurricanes making landfall along the continental United States coastline and in the Caribbean,” he said.

A wide range of seasonal forecasters are predicting a busy 2020. (Phil Klotzbach)

Seasonal forecasts must always be taken with a grain of salt, and early-season storms do not necessarily foretell a busy overall year in the Atlantic. But given how the rest of 2020 has gone so far, it seems prudent to prepare for an active year in the Gulf of Mexico. This National Weather Service site offers a good place to start for your personal planning for the upcoming season.

Sponsor note

As it’s time to prepare for the months ahead, Reliant wants to help Houstonians. Here are a few reminders to consider: 

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  • Create (or update) and practice your family communication plan. Identify a familiar contact who lives outside the area that everyone can call if the family gets separated. Don’t forget to designate an emergency meeting location as well. 

For more preparedness tips and recovery resources, visit reliantstormcenter.com. The site provides resources for before, during and after a storm, including preparedness checklists and evacuation routes, weather and power outage updates, flood maps, safety tips and more.

Storms are a part of life in Texas, so preparedness is critical. We, of course, hope this season will be a quiet one but regardless, Reliant and Space City Weather will be there for you.

10 thoughts on “Hurricane season started with a bang—so what does that mean?”

  1. The statistical r squared ain’t good. But the psycological impact is strong. The “I got a bad feeling about this” from early storms might actually be put to use for marketing hurricane preparedness to save lives, even if it is scientifically dishonest. This country gave up on logical thinking quite some time ago, so they won’t notice, and at least we can scare some people enough to save their lives.

    • Oh yeah, that worked really well in the late 2000’s when Premature, and unscientific, fear mongering and evacuation debacles resulted in a lot of folks NOT evacuating when they needed too when Katrina and then Ike rolled in along the gulf coast.

      No hyperbole weather is why we come here instead of network news. So let’s just keep to the facts please.

    • “This site is dedicated to covering Houston weather news and forecasting with accuracy and without hype.”

    • Which R2 are you talking about, the graph above or the model in the report? I think the point of the graph above was indeed that there isn’t a correlation of hurricane activity in a season and when the first hurricane occurs.
      In the report, I actually don’t find the R2 for this kind of model horrible – I think the model in the report got some prediction power.

      I agree definitely with the general lack of logical thinking (also observable through an absence of social distancing or masks), so an early storm might get people going where otherwise a million factual reports won’t do a thing.
      My house is ready but I do hope we don’t have to put it to use

    • If you click on the link, it shows the Generac & Koehler generators sponsored by Reliant.

  2. This is scary news, but I feel better knowing you all will be here giving it to us straight, without glossing over the “I don’t knows.” Thanks for teaching us a little about meteorology along the way. It’s kind of, dare I say … fun!

    • PS: I like that Reliant sponsors this site and it’s good to learn more about their services. I’m glad to know they offer generators… time to talk to the hubby again. He’s said no every summer since Harvey, but hopefully this year!!!🤞🏽

  3. Eric and Matt…your assessment (no hype) coupled with the NHC data and FACTS (no hype) gives me much comfort greatly helping me make decisions…just yesterday I heard a local TV weather person say “…this storm may come our way”…those words were pure hype ..I immediately went back to your morning assessment, as well as digging into the NHC data…my angst went away (no hype)…what FACTS suggested to that reporter that they needed to say that?! I’m very impressed with the NHC and all the folks that model this stuff….going back to when this started they were darn close on predicting how this storm would play out, spinning down south and then headed north…great work and broadcasting FACTS!! Very comforting…thanks!

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