Home Gulf Coast WX Post-Christmas Storm System to Bring Dual Flash Flood, Severe Weather Threat

Post-Christmas Storm System to Bring Dual Flash Flood, Severe Weather Threat

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Figure 1. Severe weather update graphic from National Weather Service Houston.

A post-Christmas storm system is going to eject northeast, out the Plains, Wednesday -Friday, bringing a trailing front into the the Gulf Coast States.

Gulf of Mexico moisture will be advected (drawn) north, leading to widespread heavy rain and storms. The front is still progged to become quasi-stationary along the north-central Gulf Coast Friday through the weekend. Periods of heavy rain will continue, creating a flash flood threat.

Figure 2. Latest 7-day QPF from the WPC | Credit: Pivotal Weather

The WPC is now forecasting a swath of 4 – 5″ of rain from southeast Louisiana into central Alabama.

While the overall threat is low, severe weather is also a possibility. The Storm Prediction Center has hatched a “slight” risk area for parts south Texas Wednesday (see figure 1). A risk area has not been defined for Thursday. As of now, it appears damaging wind gusts will be the main threat with any strong/severe storms. However, an isolated tornado or two will also be possible.



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