Wednesday August 2
We don’t have an organized severe storm risk today, but we are under the influence of a very humid air mass. The morning surface map shows the subtle trough or weakness in the atmosphere over northeast Maryland and southeast Pennsylvania. This is where storms are expected to first fire up and it could be as soon as noon or 1 PM. Similar to the Bay Breeze Boundary over Baltimore yesterday, what develops could sit over the same location or drift in any direction. That is where the flooding threat comes in.
The radar simulation from the HRRR Model did a good job foreseeing the central Maryland cluster of storms yesterday. Some storms could drop a quick 1 to 2 inches of rain in less than an hour, leading to flooding again. So let’s take a look at how it play today out:
Notice the concentration matches the area in the surface map above. I want to point out that this is a guide for timing and regional location, but may not be precise. But it is worth watching this afternoon for the first developing showers between York and Lancaster in PA, across the brother to northern Baltimore, Harford, and Cecil Counties in Maryland.
This does show Baltimore in on the action again as well… Another Bay Breeze boundary could set up mid afternoon somewhere between Baltimore, Washington, and Annapolis… and just drift.
Showers and storms will increase across the region over the next few days. Temperatures continue in the upper 80s and lower 90s. This should move out with morning showers Saturday, then clearing and a drop in humidity Sunday.
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