9/15 – Rob’s “Threat For Heavy Rain” Afternoon Forecast
The main concern the next few days will be heavy rainfall, with the potential for ongoing flash flooding. A FLASH FLOOD WATCH and COASTAL FLOOD ADVISORY is ins effect
Hourly rainfall rates can be 1.5 to 2 inches (and possibly higher) in the bands crawling eastward across the area. 24 hour precipitation totals through tonight are expected to be in the 3-6 inch range, with locally much higher amounts, mainly near and to the east of Interstate 55. West of there, totals may be more in the 1-3 inch range. With Nicholas expected to eventually dissipate near the area, we don’t see any real significant drying in the short term period.
Daytime convection will continue. It won’t be as widespread as it is today, but the threat for isolated heavy rain amounts will continue for much of the area. Likely to categorical rain chances each day, with high temperatures remaining mainly in the 80s.