The first round of severe weather will come in the form of supercell thunderstorms forming over the NC/VA area, and as they move into an area of large instability and rotation over Eastern VA and the Washington DC/Northern Virginia area, these storms will quickly start rotating and will bring a high risk of tornadoes to these densely populated areas. Some of the tornadoes could be strong, but even the tornadoes that aren't strong can be extremely dangerous if they hit a populated area.
The second round of severe weather will come from a cold front draped west of the Appalachian Mountains right now, along which a powerful line of thunderstorms will develop this afternoon. As this line of thunderstorms develops and crosses the mountains, they will become severe with damaging winds posing the main threat. They will have free reign of the land from the eastern slopes of the Appalachians to the Atlantic Ocean, so anyone in the red 30% damaging wind zone seen in the wind risk map below needs to take extreme caution.
Severe weather outlook:
A new tornado watch was just issued for a huge chunk of real estate from Pennsylvania to North Carolina, effective until 900PM EDT:
Today has all the makings of a day that could be very dangerous, simply because of the population density of the areas affected. I will have solid liveblogging all afternoon once the storms start going and the tornado threat ramps up.
If you live in any of these areas, begin going over what you need to do to keep yourself safe. Figure out where you can take shelter if you're out on the road when a tornado warning is issued. Ask your place of work what their tornado precautions are. Start scoping out your house now for a safe place to take shelter if need be, keeping in mind the heavy furniture around and above you.
National Weather Service Main Page
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National Weather Service -- Charleston WV
National Weather Service -- Greenville SC
National Weather Service -- Philadelphia, PA
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