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Ernesto to Make Landfall Tonight as a Hurricane

By: Levi32 , 2:12 PM GMT on August 07, 2012

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Ernesto is now deepening again after a delay yesterday when its small, fragile core collapsed and allowed some dry air into the circulation, forcing Ernesto to rebuild from scratch. The pattern is very conducive in the western Caribbean for intensification, but Ernesto got a little too excited too fast, and had to reset. The pressure is now falling again, down to 988mb, and Ernesto should easily attain hurricane-force winds before landfall near Chetumel, Mexico late tonight. Ernesto's core is still small, but his spiral bands expanded yesterday and have broadened the wind field of the storm as a whole, so a large area of rain and TS-force winds will be slamming Mexico and Belize as the center comes ashore. Ernesto will be weakened by the crossing of the Yucatan, but will likely restrengthen some on the other side in the Bay of Campeche, possibly back to hurricane strength if it moves far enough north to get more time over water. However, the 2nd landfall will occur relatively quickly, not allowing much time for intensification. This will be a classic double hit for Mexico, with flooding rains probably being a bigger problem for them than the winds.

In the rest of the Atlantic, we have ex-Florence and Invest 92L in the central Atlantic. The models are not excited about either system, and develop nothing in the Atlantic during the next 10 days. The GFS and CMC hint that the Gulf of Mexico will remain somewhat active after Ernesto leaves, with upper ridging and some low-level disturbances possibly making some noise during the next 8 days, but right now no immediate or significant threats are apparent.

The MJO is forecasted to move deeply into phases 1 and 2 over the next two weeks, supporting an active Atlantic overall, and the GFS has been bullish on many Cape Verde waves that it has moving off of Africa during that time. As promised pre-season, the African wave train is strong this year, but will have trouble generating storms in the deep tropics, and these waves are more likely to develop after they get north of 20N and farther west. We will have to watch for some of these to sneak up on us closer to our back yard. Overall, there are no immediate development threats after Ernesto leaves.

We shall see what happens!

The views of the author are his/her own and do not necessarily represent the position of The Weather Company or its parent, IBM.

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4. Storm4Ivana
9:11 PM GMT on August 07, 2012
Thanks Levi. In your opinion Levi, do the forecasted mean flow indicate a recurvature with these cv easterly waves over the next 10 to14 days ? Would the Gulf Coast States be less likely to be affected than say Bermuda or NC ? I am not a business planner. Just curious how the upper level flow might set up for a while. Thank you for your work. -Gonzales, Louisiana.
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3. splash3392
2:33 PM GMT on August 07, 2012
Thanks Levi. I really appreciate your visual as well as vocal explanations.
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2. weatherh98
2:21 PM GMT on August 07, 2012
Thanks levi
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1. floridaboy14
2:21 PM GMT on August 07, 2012
thanks Levi. GFS ensembles show some scary runs of cape verde hurricane anywhere from Texas to Bermuda.
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Tropical Tidbits from the Tundra

About Levi32

Masters student in tropical meteorology at FSU. Raised in Alaskan blizzards, but drawn toward tropical cyclones by their superior PGF.

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