Well another hot and humid day is here, today will make it an official heat wave which is 3 or more consecutive days of 90 or above. While temperatures will be a little lower than the last 2 days there’s really no relief because we will have more humidity as a cold front approaches, so while highs will “only” be in the low to mid 90s, dew points in th 70s will lead to heat indexes similar to those of the last 2 days, ranging from the upper 90s to low 100s.
We look at the radar and see a cold front extending though central/western PA . This cold front will SLOWLY swing east through the day. Upper level winds are running parallel to the front (SW TO NE) so it wont be moving quickly at all. With heating of the day showers ad thunderstorms will increase in coverage, become widespread through the afternoon and move east into the forecast area.
The main threat I see is heavy rain and flash flooding due to all the moisture and humidity. Training thunderstorms (thunderstorms that move over the same area over and over again) will be a threat as once again this front is a very slow mover. I can’t rule out a few isolated strong to severe thunderstorms but im not impressed when it comes to the severe weather department. The best dynamics with this cold front will be well to our north . With any thunderstorms though strong winds are possible with very heavy rainfall.
The storm prediction center has placed th area under a slight risk for severe thunderstorms.
Late afternoon and evening:
Overall I expect a widespread 1/3 to 3/4 of an inch of rainfall but in thunderstorms and training thunderstorms some areas could easily exceed 1 inch , if your area is caught in training thunderstorms be aware of flash flooding and stay tuned in case warnings are issued.