Brief Afternoon Update on Invest 92L: Concerning Model Trend

Figure 1. GFS predicted 6-hour precipitation and MSLP for Saturday evening. Image: Tropical Tidbits

Invest 92L has moved offshore, and is now located in the northeast Gulf of Mexico.

Latest from the National Hurricane Center

Per the 2 PM EDT Tropical Weather Outlook, Invest 92L now has a high chance – 70 percent – of developing within the next 2 days.

This is an increase from 50 percent this morning.

Concerning model trend

Over the course of this morning and this afternoon, model guidance has trended stronger with 92L as a whole.

The ECMWF has remained fairly consistent, predicting a category 1 at landfall.

The GFS (see figure 1) has gone from predicting a tropical depression/low end tropical storm at landfall to a category 1 at landfall.

The UKMET is now stronger than both the ECMWF and GFS, predicting 92l to peak as a high end category 2 or category 3. It appears to be an outlier with regard to intensity at this time, though.

The main takeaway here is that model guidance, collectively, has trended toward a stronger storm.

Track

Overall, models appears to be locking on to a Louisiana landfall.

Figure 2. 18z track guidance for 92L. Image: RAL/NCAR

However, there is still ample time for change, and everyone along the northern Gulf Coast should continue to monitor the progress of 92L.

Just a trend for now

While models have trended stronger, it doesn’t guarantee a stronger storm. Models could just as easily trend weaker again with the next model cycle.

The same goes for track.

Caleb Carmichael
Caleb Carmichael

Caleb is the owner of Gulf Coast Storm Center. He is currently an undergraduate student at Mississippi State University majoring in geoscience with a concentration in broadcast and operational meteorology. While not yet a meteorologist, Caleb has been providing weather updates, news, and analysis for the Gulf Coast since 2014.

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