A break from the heat and humidity could mean a wetter pattern returns

Weather in the metro the past several days has been relatively uneventful with Bermuda High pressure dominating over our area bringing low to mid 90 temps and Gulf moisture into the region on southerly wind. The only fly in the ointment has been a few isolated afternoon thunderstorms that have popped up in the heat of the afternoons and dissipated around sunset.

After yet another hot and humid day on Wednesday the pattern begins to change as the high pressure weakens allowing a disturbance to swing through in the early evening hours which will give us a chance of showers and thunderstorms moving across the metro.

The High Resolution NAM model indicates a chance of precip in the metro Wednesday evening.  This is a model graphic, depicting a possible scenario, and is not a forecast.

Behind the disturbance the metro will be in northwest flow, meaning the upper level winds are moving from northwest to southeast, putting us in the path of storm systems as they develop over the plains. This pattern sets the stage for a series of MCS’s (line of thunderstorms) to move across the metro from Friday through the weekend, however timing of these systems is hard to predict more than 24 hours in advance. Overall, high temps will drop to near 90 with humidity levels decreasing to more comfortable levels this weekend. That will also allow overnight low temperatures to cool down slightly.

The GFS model predicts another possible round of precipitation on Friday morning.

–Patrick Luckett, MWN intern

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