SATURDAY NIGHT: Mostly cloudy and muggy. A slight chance of a stray shower or two. Overnight lows in the mid 70s. Chance of rain 30 percent.
SUNDAY: Partly cloudy with scattered showers and thunderstorms. Some thunderstorms could produce heavy rain that may cause localized flash flooding. Afternoon highs in the mid 80s, except cooler near thunderstorms. Chance of rain 60 percent.
MONDAY and TUESDAY: Continued muggy and unsettled. Neither day will be a washout, but expect partly cloudy skies with scattered showers and thunderstorms. Any thunderstorms could produce locally heavy rain that may cause flash flooding. Afternoon highs will be in the upper 80s, with muggy overnight lows in the mid 70s. Chance of rain about 50 percent both days.
WEDNESDAY and the START OF FALL: The autumnal equinox is at 2:20 p.m. CDT on Wednesday, marking the start of astronomical Fall. With the change of seasons will be some big changes in weather. A cold front will sweep through the Lower Mississippi Valley Tuesday into Wednesday, and may trigger some stronger thunderstorms, but no severe weather is expected. Then behind the front, a cool and dry airmass will slide in to the Deep South. Skies will clear Wednesday, and then the rest of the week will be sunny, cool, and dry. Afternoon highs will be in the upper 70s and lower 80s, and overnight lows will be in the 50s, and with almost ideal radiational cooling conditions overnight (clear skies, light winds, low humidity), a few upper 40s are not out of the question, especially toward the Golden Triangle region.
TROPICS: Tropical Storm “Odette” became a post-tropical storm Saturday, although it continues to strengthen. Besides rough surf to portions of the northeast and Canadian maritimes, no significant effects to land are expected. “Odette” will strengthen for a few more days as it meanders in the North Atlantic.
Elsewhere in the tropics, a tropical wave in the central Atlantic has a 90 percent chance of developing into an organized tropical system in the next several days. This system could bring direct effects to parts of the Caribbean, and may threaten the U.S. East Coast, so we need to watch this one closely. Another wave off the west coast of Africa has a medium 50 chance of developing. This second disturbance is not going to threaten any landmasses in the next few days.
Should these two systems become named, the next 2 names on the list are “Peter” and “Rose”.