2:45 PM | ****Hurricane Helene headed for Florida’s Gulf coast as a "major"...landfall early tonight...Georgia to be hit hard...southern Appalachians especially vulnerable to severe flooding****

September 26, 2024Paul Dorian

Hurricane Helene has strengthened during the past 24 hours and is now classified as a strong category 2 hurricane with maximum sustained winds of 110 mph. It should continue to intensify today as it closes in on Florida’s Gulf coast with the likelihood of reaching category 3 hurricane status featuring sustained winds of 111 mph or higher and category 4 designation is still on the table. Landfall is expected early tonight along Florida’s “Big Bend” Gulf coastal region as a “major” with a significant storm surge; especially, just to the right of the landfalling location where levels can reach 15-20 feet. With some acceleration expected later today, Helene will not have much time to weaken after landfall and, as such, it is likely to reach into southern Georgia as a hurricane during the wee hours of the morning. The lasting strength of Helene and its expected track into the Tennessee Valley assures significant impact inland to include the state of Georgia, and an especially vulnerable region is the southern Appalachian Mountains where upsloping winds can result in massive rainfall amounts of 1-2 feet and severe flash flooding.

By mid-day on Friday, the tropical system will become increasingly influenced by very strong “blocking” high pressure to the north and an upper-level trough of low pressure located in the southern Mississippi Valley. The tropical low will “rotate around” this upper-level trough of low pressure for a brief time in a pattern known to meteorologists as the “Fujiwhara effect” before it ultimately dissipates and gets absorbed by the upper-level low.

***Hurricane Helene headed for Florida’s Gulf coast likely as a "major" with landfall early Thursday night...Georgia/southern Appalachians to be hit hard***

September 25, 2024Paul Dorian

Tropical Storm Helene has strengthened during the past 24 hours and is on the verge of attaining “category 1” hurricane status with sustained winds of 74-95 mph. All indications are that Helene will undergo rapid intensification during the next 24 hours or so given the combination of favorable environmental conditions such as low vertical wind shear and ample moisture, and its movement over very warm water with high oceanic heat content. This expected intensification of Helene will likely result in attainment of “major” hurricane classification on Thursday as a category 3 storm system with sustained winds of 111 mph – 129 mph. Helene should begin to accelerate tomorrow in a north-to-northeast direction likely resulting in a landfall early tomorrow night along Florida’s “Big Bend” Gulf coastal region. As is typical of northward moving tropical storms, the storm surge should be most impactful to the right of the landfall location potentially affecting coastal sections down to areas just north of Tampa Bay. In addition, there will be the threat of tornadoes to the right of the storm’s track including portions of northern and eastern Florida, Georgia and South Carolina.

After landfall, the remnants of the hurricane will move along at a pretty good clip in a general northward direction through the state of Georgia where there is likely to be significant impact including hurricane-force wind gusts and excessive rainfall amounts. In fact, excessive rainfall may extend to throughout much of the southern Appalachians where strong upsloping winds will enhance upward motion and increase overall amounts. By mid-day on Friday, the tropical system will become increasingly influenced by very strong “blocking” high pressure to the north and an upper-level trough of low pressure located in the southern Mississippi Valley. The tropical low will “rotate around” this upper-level trough of low pressure for a brief time in a pattern known to meteorologists as the “Fujiwhara effect” before it ultimately dissipates and gets absorbed by the upper-level low.

1:00 PM | ***”Major” hurricane threat continues for Florida’s Gulf coast...landfall possible late Thursday in the "Big Bend" region...Georgia to be hit hard as well***

September 24, 2024Paul Dorian

A strong tropical wave continues to churn over the warm waters of the western Caribbean Sea and it is likely to threaten Florida’s Gulf coast as a “major” hurricane by late Thursday. This system should attain named tropical storm status shortly (minimum winds of 39 mph) and then it should take a track in between the Yucatan Peninsula of Mexico and the western tip of Cuba as it heads to the southern Gulf of Mexico. Intensification will then continue as it heads on a general northward track over the warm waters of the eastern Gulf and it could climb to “major” hurricane classification (i.e., category 3 or higher) before a likely landfall late Thursday somewhere near Florida’s “Big Bend” Gulf coast region.  

After landfall, the remnants of the hurricane will push in a general northward direction through Georgia and South Carolina producing powerful wind gusts and significant rainfall along the way. At this point, the tropical system will become increasingly influenced by very strong “blocking” high pressure to the north and an upper-level trough of low pressure dropping southeastward into the south-central states. In fact, the tropical low may “rotate around” this incoming upper-level trough of low pressure for a brief time in a pattern known to meteorologists as the “Fujiwhara effect” before it ultimately gets absorbed by the upper-level low..

12:15 PM | ****Hurricane threat for Florida’s Gulf coast later Thursday and it can become a “major”...changing weather pattern results in enhanced upward motion...the "Fujiwhara effect"****

September 23, 2024Paul Dorian

A strong tropical wave has developed over the northwestern Caribbean Sea during the past day or so and it is likely to threaten Florida’s Gulf coast as a hurricane later in the week...potentially a “major” hurricane of category 3 classification or higher. A significant change to the overall large-scale weather pattern in the Atlantic Basin is now underway and it is much more conducive to the formation and intensification of tropical systems. This change is the result of a re-positioning of a tropical disturbance known as the “Madden-Julian Oscillation” and it is leading to enhanced upward motion over the Caribbean Sea and Gulf of Mexico. This more favorable weather pattern for tropical cyclone activity will likely last well into the month of October. In the near-term, all residents from New Orleans to Tampa should continue to monitor this current threat closely over the next couple of days.