A powerful cold front is expected to sweep across South Florida later this week, bringing the lowest temperatures the region has seen since March, as reported by Telemundo 51.
The front is set to pass through the area between Thursday night and Friday morning, preceded by increased cloudiness and higher chances of showers and storms on Wednesday and Thursday.
Following its passage, northwesterly winds will usher in a much colder and drier air mass into the state.
Forecast Details
According to Ryan Phillips, meteorologist for NBC 6, Tuesday's high will hover around 84°F (29°C).
Temperatures on Wednesday and Thursday are expected to remain near 85°F (29°C), with possibilities of rain.
By Friday, temperatures will drop to about 78°F (26°C) with mostly clear skies, while Saturday will see highs only reaching 72°F (22°C).
The most noticeable drop will occur during the weekend's early morning hours.
In Miami and Fort Lauderdale, overnight lows could near 58°F (14°C), whereas West Palm Beach might record temperatures around 56°F (13°C). Saturday's highs are projected to range from 70 to 73°F (21-23°C).
Phillips noted that Saturday and Sunday morning lows will range from 55 to 60°F (13-16°C), before temperatures recover during the afternoons to about 70-75°F (21-24°C).
The meteorologist also forecasted predominantly sunny skies for the weekend, alongside the arrival of cooler air.
Telemundo 51 highlighted that if the forecast holds, it will be the first time since mid to late March that parts of South Florida experience temperatures below 60°F (16°C).
Understanding the Cold Front
The temperature decline is linked to an atmospheric pattern allowing a deep trough to advance over the eastern United States, pushing a polar-origin air mass towards the southeast.
As explained by Telemundo 51, negative phases of the Arctic Oscillation and the North Atlantic Oscillation can weaken or alter atmospheric circulation, usually keeping colder air trapped in polar latitudes.
Such conditions enable some cold air masses to move southward.
However, this doesn't imply that the polar vortex will move directly over Florida.
This phenomenon occurs in the stratosphere, high above the Arctic, while weather conditions near the surface are more influenced by the jet stream's position and tropospheric troughs.
In this instance, a more meandering jet stream and a pronounced trough will allow polar-origin air, modified on its journey south, to reach Florida.
Although it won't arrive with the extreme characteristics of original Arctic air, it will be sufficient to cause a notable temperature drop.
Gradual Warm-Up on Sunday
After a particularly chilly morning on Saturday, temperatures will start to slowly recover by Sunday.
Even so, morning lows will remain unusually cool for South Florida, potentially staying between 55 and 60°F (13-16°C).
The weekend will be characterized by mostly sunny and dry conditions, with high temperatures gradually returning to between 70 and 75°F (21-24°C), according to NBC 6's forecast.
Key Questions About South Florida's Cold Front
What is causing the temperature drop in South Florida?
The temperature drop is caused by a deep atmospheric trough advancing over the eastern United States, pushing a polar-origin air mass into the region.
How low will temperatures drop in Miami and Fort Lauderdale?
Temperatures in Miami and Fort Lauderdale could drop to around 58°F (14°C) during the coldest periods.
Will the cold front bring extreme Arctic conditions to Florida?
No, the cold front will not bring extreme Arctic conditions, but it will result in a significant drop in temperatures.
When will temperatures begin to recover?
Temperatures will start to recover slowly on Sunday, although morning lows will remain cool.