Wednesday – Showers/Thunderstorms Possible, High 83
(7 am 66 . 10 am 77 . 1 pm 82 . 4 pm 84 . 7 pm 81 . 10 pm 74).
Our NWS gives us 40% chance for showers and thunderstorms. Those rain chances increase later Wednesday night.
Next Several Days
A low pressure center at 500 mb (that’s at 18,000 feet) will wander south from the Great Lakes, then spin around through the 4th of July. See the below (patriotic) loop from June 29 through July 7. The low pressure is red. This will “unsettle” our weather through the 4th.
Our NWS says:
THIS DOESNT MEAN IT IS GOING TO RAIN EVERY MINUTE OF EVERY HOUR BUT THERE WILL BE AN ON- GOING CHANCE FOR SHOWERS AND A FEW THUNDERSTORMS ON A DAILY BASIS.
They continue:
EVEN AFTER UPPER LOW LIFTS NORTHWARD INTO CANADA AROUND JULY 4TH WE HAVE SUCH A GOOD MOISTURE FEED FROM THE GULF OF MEXICO INTO THE TENNESSEE VALLEY THANKS TO A RATHER STRONG BERMUDA HIGH KEEPING THE CHANCE OF SHOWERS AND THUNDERSTORMS.
The 3 p.m. update from the Storm Prediction Center was largely unchanged for us. The probabilities of “x” happening within 25 miles of you today:
Afternoon thunderstorms (previously advertised as “Round 1”) haven’t developed as predicted by weather models, likely due to a “cap” up in the atmosphere preventing a large amount of thunderstorm energy from being released. Also limiting afternoon thunderstorms has been some “mixing,” causing drier dewpoints to come on down . . .
Today we’ll feel high humidity and temps topping out in the low 90s, but the main concern is the possibility of severe weather this afternoon and tonight.
Before I dive into the weather models, remember: weather models are useful tools for guidance. They are not Gospel. They are often off by hours, or “wrong” altogether.