Cold front coming
The normal summer pattern will break for a little while after today.
Today and tonight: By comparison, Wednesday will be very similar to Tuesday—at least for the first half of the day. Expect a quick jump to steamy with highs topping out in the low 90s by afternoon. Skies will be partly sunny early but a few more showers and thunderstorms are expected by late afternoon and evening. Rain coverage will be on the order of 30-40%. Tonight, showers may linger with lows in the low 70s.
Looking ahead: Thursday and Friday are looking like the two wettest days in the extended forecast. An approaching front will allow moisture and instability to pool and generate a few rounds of showers and storms over that period. Mainly cloudy skies will likely keep highs in the 80s, though humidity won’t move much. Overnights will be a bit quieter with lows in the low 70s. Getting into the weekend, Saturday will be a transitional day as a cold front front slips southward through the region. While a shower may occur early, the afternoon hours are looking drier and breezy with highs in the mid 80s. By Sunday, dry air will be in place and, as a result, morning lows will be near 60! Ample sunshine will allow comfortable warmth in the afternoon with highs in the mid 80s. Enjoy the fall preview as it lasts through Monday because a surge of tropical moisture will bring a rainy period for the middle of next week.
Forecast Discussion: The upper low over the Northern Gulf Coast is weakening but a deeper longwave trough is approaching Louisiana from the northwest. This trough is guiding a cold front southward through the Eastern United States as well. Moisture pooling ahead of these features should allow some of the spin associated with the Gulf trough to kick out additional showers later Wednesday—meaning more than what occurred on Monday and Tuesday. By Thursday, the upper trough and cold front will slide into our very moist air mass and serve as triggering mechanisms for showers and storms. It would appear that a pair of mainly cloudy days with periods of showers and storms is in order. This combo will lead to highs keeping in the 80s, though humidity won’t be supplanted until the front kicks through. Forecast models are doing this on Saturday. There may be some morning showers but the second half of the day will bring clearing skies and a drying air mass. Sunday Morning will find lows in the 60s as drier air provides a little relief. After a span of 2 quiet days, we’ll keep an eye on some tropical moisture surging in for another wet spell by the middle of next week.
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