Tracking the Tropics: Invest 92L likely headed west toward South Texas or Mexico
POSTED: Wednesday, August 14, 2013 - 11:25am
UPDATED: Friday, August 16, 2013 - 7:28am
BATON ROUGE, LA (NBC33) — UPDATE: Friday, 08/16/2013 @ 8am: Most of the thinking on this system remains the same. Just a couple of new things to mention. Invest 92 is now back over the open waters of the southern Gulf of Mexico/Bay of Campeche. It remains very disorganized at the moment, but could move into a better environment in the next 24 hours. It's important to note, the environment where it's most conducive to develop in would be to the WNW in the western Gulf toward South Texas/Mexico. This is the most likely track for the system. If it tried moving north toward us, the high wind shear and drier air would almost certainly kill anything trying to strengthen. The next 24 hours are pivotal for this system. The main brunt of the system will continue drifting WNW toward Mexico/South Texas. There may be a secondary low that branches off along the wave axis and moves north over the weekend. This would increase rain chances mainly along the SE LA coast to the Mississippi coast and the AL/FL coasts tomorrow into Sunday.
UPDATE: Thursday, 08/15/13 @ 7am: Satellite images and surface observations indicate that the weather disturbance in the extreme northwestern Caribbean sea has become less organized overnight with most of the shower activity now moving over the Yucatan Peninsula and Belize. Development of this system before it moves over land has become less likely. However, there is still potential for marginal development once the disturbance moves over the Gulf of Mexico. This system has a 50% chance of becoming a depression or storm over the next 48 hours.
UPDATE: Thursday, 08/15/13 @ 1am: Thunderstorm activity has decreased over the last few hours, but the conditions seem marginally conducive for a depression or storm to form over the next 2-3 days. In fact, the NHC puts potential for development at 70% over the next 48 hours. However, the storm will be passing over the Yucatan Peninsula later today, so this should help to disrupt any development that may occur in the next few hours. After that, it will emerge in the southern Gulf of Mexico, and the models are still split on any potential landfall thereafter. It's important to note that none of the models intensify this into a hurricane. Most predict only a mid range tropical storm. We will know more later this afternoon after the Air Force flies into the storm to see if there is a low level circulation or not. That will also make the model runs more reliable.
We continue to monitor an area of low pressure in the western Caribbean Sea. It's part of a wave bringing in deep tropical moisture.
The tropical wave is heading northwest at 12-18 mph. Right now, spaghetti models remain split on the path of this next possible system. Global models also remain undecided on the path.
There are really two senarios regarding the possible tropical development of this area of low pressure.
Option #1: The low develops into a tropical storm directly after passing the Yucatan Pennisula. Steering winds would drive the tropical storm northward towards the northern Gulf. Landfall would most likely be a near the Florida-Alabama line as a tropical storm. Heavy rain and potential flooding would be a major concern for the Gulf Coast and Louisiana for the upcoming weekend.
Option #2: The tropical wave would never close and would remain open. Its path would be directly west northwest towards northern Mexico and southern Texas. There would be no threat to Louisiana.
The latest tropical update will be out shortly. The StormTracker33 Weather Team will continue to keep you posted on the latest developments of Invest 92L.