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Weather Authority Alert Day this Friday

Strong springtime cold front to push through with storms

Big dip in the wet jet stream will produce heavy possibly severe storms all along the Gulf Coast into Northeast Florida and Southeast Georgia later this week.
Big dip in the wet jet stream will produce heavy possibly severe storms all along the Gulf Coast into Northeast Florida and Southeast Georgia later this week.

JACKSONVILLE, Fla. – While it is still too early for the details of when exactly and what exactly we may see on Friday, one thing is very clear: the overall weather pattern is highly conducive for severe thunderstorms. 

This spring severe weather pattern starts with a cold pool of air at the upper-levels (20-40,000 feet) of the atmosphere. This cold pool of air is then pushed into the Deep South where the strong spring sun has been heating up the ground. This creates a very unstable atmospheric condition. 

Working on the same principals of a hot air balloon, where hot air is much lighter than cold air, when cold air moves over a rather toasty earth, it is like a double whammy. The results can make for very explosive thunderstorms.

Furthermore, these storms can last and last. These are called "super cells." These super cells can ramble on for hundreds of miles (both day and night) and dump extremely heavy rains, hail, high winds and tornadoes.

This past weekend, a similar weather pattern spawned dozens of tornadoes that killed nine people.

Again, too early to tell of we will see a similar pattern of tornadoes, but it is something we will be watching closely. From tornadoes to a round of heavy rains, Friday will likely be very busy in the weather office.

Red triangles (35) tornado reports on Saturday alone.
Red triangles (35) tornado reports on Saturday alone.

 

Rainfall amounts as suggested by the Global Forecast System (GFS.)
Rainfall amounts as suggested by the Global Forecast System (GFS.)

Here's how it turned out...

Wind gusted to plus 50 mph in many locations.
Wind gusted to plus 50 mph in many locations.
Storms were fast moving, so rainfall amounts were only moderate.
Storms were fast moving, so rainfall amounts were only moderate.
100s of storm reports...
100s of storm reports...

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