05/13 – Rob Knight’s “Humidity Returns” Wednesday Forecast

Starting off early this morning, we remain largely under control of the southwestern periphery of a large surface high anchored across the Great Lakes, stretching down to the Mid-Atlantic states. This is helping to create onshore flow and the return of a deep Gulf moist airmass across the area.

A disorganized cluster of decaying thunderstorms will continue to the east across LA & MS late this morning and early afternoon. As we warm up locally today, it is becoming a bit more confident that showers/storms may be possible, mainly along/west of I-55.

As we continue into the day on Thursday, question remains at how much cloud coverage stays locked in, or steadily breaks up allowing for intervals of sunshine. Thursday when compared to today, in conjunction with the surface high retreating east will help with more widespread coverage. Friday will follow similar to Thursday, with a repeat of afternoon shower/storms for all areas.

By the weekend, we begin to shift focus to the west with the development of a cut-off upper-level low wobbling across the southern US. Long-range guidance continues to support this low staying to our west, along with any severe weather and heavy rain associated with it, before eventually dissipating or becoming absorbed into the overall pattern.

The main story for us going into this weekend will be much of the same with spotty afternoon showers/storms and warm temperatures nearing back to climatological normal.

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