Tuesday, September 29, 2015

More heavy rain on the way

A very interesting situation setting up for later this week into the weekend...
We currently have an area of low pressure riding through the central Appalachians out ahead of an approaching cold front. This low was responsible for the widespread heavy rain and flooding across western portions of the state today.
Once this low moves up into New England, we'll then turn our attention towards the advancing cold front, a tropical moisture plume out of the Gulf and western Atlantic, and Tropical Storm Joaquin. There remains considerable uncertainty in regards to how these features interact with each other along the east coast. With that said, a prolonged period of heavy rain is becoming more likely across the state. It's worth noting that we'll likely see hefty precipitation totals even if Tropical Storm Joaquin stays well offshore---as this will likely pave way for coastal low development off the mid-Atlantic coast. The flooding concern is very real. The pressure gradient between these lower pressures and a strong blocking high over eastern Canada will also result in another round of very gusty, easterly winds leading to elevated water levels along coastal areas.
If you live in a flood prone area (whether near a freshwater stream or tidal floodplain), keep an eye on things over the next few days.

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