A Super Soaker...
The fine weekend weather has spilled over into the start of the workweek...temps have once again exceeded average high levels and ample sun has been seen. Tomorrow will be another tranquil day as we wait for a powerful rainstorm to come charging up the coast for Wednesday.
The ingredients are very visible for a large rain producer...low pressure east of the Florida Keys has been nearly stationary for a couple of days but energy diving out of the Rockies will dig deep into the South and draw up that moisture loaded low. An intensifying jetstream (170kts) will provide a perfect environment to evacuate air aloft creating lift and vertical motion and a means to create very heavy rain up and down the East Coast.
The timing appears to be all of Wednesday...pretty much from sun up to sun down...the heaviest would likely fall in the afternoon and evening making the evening commute especially difficult with some localized flooding issues. As of now rivers are not a concern but clogged storm drains from leaves will likely lead to some urban and localized flooding.
The good news is this will be the only real rainmaker through the weekend as high pressure, drier and eventually cooler conditions take over for the several days.