Teeny Tiny Hurricane Oscar Is The Weirdest And Most Surprising Hurricane Of The Year

Visible satellite view of itty-bitty Hurricane Oscar
approaching the northeastern coast of 
Cuba Sunday morning.

 Meteorologists are still agog over Hurricane Oscar, which abruptly formed Saturday southeast of the Bahamas.  

The storm is extremely weird because nobody even expected it to form. And when it did, it turned out to be one of the tiniest hurricanes on record. 

THE SURPRISE

What would become Hurricane Oscar was a struggling disturbance that spent several days crossing the Atlantic Ocean from the coast of Africa to a spot southeast of the Bahamas Saturday morning. 

Just before dawn Saturday, the National Hurricane Center gave the disturbance a mere 10 percent chance of becoming a weak tropical depression or storm.

By late morning, it had turned into a hurricane. The National Hurricane Center and other experts are remarkably good at sniffing out days in advance when a disturbance would turn into a hurricane, so this was a stunning miss. 

Just proves that not everything about the atmosphere is completely understood just yet.

TINY OSCAR

Once Oscar formed it proved to be remarkably tiny. 

Even though top winds were 85 mph late Saturday afternoon, hurricane force winds extended out only five miles from the eye at the center of the storm.  Tropical storm force winds only went out 40 miles from the center. 

The only example people could find of a smaller tropical system was Tropical Storm Marco in October, 2008, which never reached hurricane status. Its-bitsy Marco's tropical storm force winds only extended out 11.5 miles from its center when it was off the Mexican coast. 

For perspective, if the eye of Hurricane Oscar was over Waterfront Park in Burlington on the shores of Lake Champlain last evening, hurricane force winds would extend out only as far as a little east of the Patrick Leahy International Airport in South Burlington. Tropical storm force winds would only extend to a little south of Middlebury, and folks in Rutland would wonder what all the fuss was about.  

Hurricane Oscar was so diminutive that noted hurricane chaser Josh Morgerman dubbed the storm a "cutiecane."

Morgerman said he's not chasing this one in large part because of its minuscule size. Really small hurricanes are prone to rapid intensity changes. They can blow up fast, like it did Saturday, but they can also fall apart much more rapidly than normal sized hurricanes. 

Early this morning, Hurricane Oscar had not grown any larger than it was Saturday, and made a brief landfall on Great Inagua Island in the southeastern Bahamas with top winds of 80 mph. Forecasters say it should remain a hurricane as it reaches the coast of northeastern Cuba later today.

The rough terrain of that section of Cuba should really rough little Oscar up, and it should weaken.  Forecasters think it will then turn north, then northeast and push through the Bahamas as a tropical storm tomorrow and Tuesday. 

Of course, that forecast is super iffy, given its minuscule size. Plus, hostile upper level winds might well develop, which tend to quickly tear small tropical systems apart. Teeny-weeny Oscar might not survive Cuba at all.

Oscar will not threaten the United States. There are also no signs of any new tropical storms or hurricanes in the Atlantic Ocean after Oscar for at least a week.

 Little Hurricane Oscar is also notable because it was part of a weirdly busy stretch of activity in the Atlantic Ocean. Hurricane expert Philip Klotzbach noted Oscar was the eighth named Atlantic storm to form after September 24.  

That's the most tropical storms and hurricanes on record to form in the Atlantic Ocean between September 24 and October 19.