Top sustained winds in Melissa were at 175 mph.
One measurement around noon or so indicated a surface wind of 188 mph, which, if accurate, is incredible.
According to meteorologist/hurricane expert John Morales, the air pressure at the center of Melissa was 908 millibars early this afternoon, which made it the 11th strongest hurricane on record in the Atlantic.
As of 5 p.m. the pressure was down to 906 millibars, making it the strongest Atlantic hurricane for so late in the season. Melissa is also the world's strongest tropical cyclone so far in 2025.
The hurricane is forecast to make landfall Tuesday on the southern coast of Jamaica probably on the western half of the island. Everybody there, including tourists, were hunkering down and hoping for the best. The airports are closed, and cruise lines have gotten out of Dodge, so to speak.
The average Atlantic hurricane season has 14 names storms, seven hurricanes and three major hurricanes.
This year, including Melissa there have been 14 named storms, five hurricanes, three of them category 5. Only 2005 had that many or more Category 5 hurricanes, which have winds of at least 157 mph.
Until Melissa, you'd never know it's been such an active season. Except for relatively weak Tropical Storm Chantal, which hit the Carolinas in July, none have hit the United States. This will be the first year since 2015 with no U.S. hurricane landfalls, unless there's some sort of November surprise.
Melissa will miss the United States. And Melissa is the first hurricane to directly strike land while close to its full fury. So until now, this year was "one of the most benign hurricane seasons in a long time."
EXPLOSIVE DEVELOPMENT
Melissa grew from a tropical storm to a major hurricane in almost a blink of an eye. That's been the pattern this year.
"Melissa isn't just another major hurricane. It's the latest in a string of Atlantic storms that have exploded in strength at breakneck speed.
Melissa grew from a 70 mph tropical storm Saturday to a 140 mph Category 4 hurricane by early Sunday. This 70 mph wind speed increase in only 24 hours is double the criteria storms need to meet in out to qualify as rapid intensifiers.
This type of explosive strengthening used to rare, but is happening more often as the world warms due to fossil fuel pollution. "
Four of the five Atlantic hurricanes in 2025 have undergone extremely rapid intensifications: Erin, Gabrielle, Humberto and Melissa.
Climate change does seem to be affecting how many particularly strong hurricanes there are out there. As Jeff Masters at Yale Climate Connections writes:
"Numerous studies over the past 20 years have found that hurricane strength storms are not becoming more numerous globally, but the fraction of such storms that reach Category 4 or 5 strength is growing and is expected to keep growing, so the world is seeing more pop these intense tropical cyclones, which tend to be the most deadly and dangerous ones."
We're increasingly going to have disasters like this. It's already been a big problem in the past decade. Harvey in 2017, Michael in 2018, Ida in 2021, Beryl, Helene and Milton last year. It's going on and on and going to get worse.
In other words, we're going to have quite a lot of Jamaica calamities in the coming years.