NOAA, National Weather Service Middle Atlantic River Forecast Center Briefing Wednesday, July 2, 2014

Key Message Tropical Storm Arthur is forecast to graze the coastline of the Eastern United States and then head out to sea. Heavy rain and flooding are possible in the Mid-Atlantic Region July 3 rd and 4 th especially along and near the coast.

Important! Heavy rain and flooding can occur sooner, and further inland, of the storm’s center.

Rain Forecast Rain from Arthur will begin Thursday and continue into early Friday afternoon on the 4 th of July.

The heaviest rains from Arthur will occur with the main storm center well offshore. In the Mid- Atlantic, however, moisture from Arthur will interact with a frontal boundary and produce around 2” of rain over eastern New York, New Jersey, eastern PA, Delaware, Washington DC, eastern Maryland and Virginia. Heavier amounts are always possible where there are thunderstorms. Forecast issued 0947Z July 2 for the period 8am July 2 to 8am July 5, 2014

Impacts to Inland Rivers At this time we are not forecasting any river flooding through Friday. But this does not mean flooding is not possible. The exact location of heavy rains are still uncertain and we will continue to closely monitor Arthur. MARFC will update our river forecasts again Thursday morning using the latest forecasts for Arthur’s track and rainfall. Stay informed and aware by monitoring weather.gov and your favorite local media through Friday.

The area shown in orange is where river flooding is possible either Thursday or Friday.

New Storm Surge Graphics This hurricane season, whenever a tropical storm or hurricane watch or warning is issued for the United States, New, Experimental, Storm Surge Graphics will be made available. These will be updated with each new track forecast, every 6 hours. _at1+shtml/ shtml?inundation#con tents _at1+shtml/ shtml?inundation#con tents Please try to check these out and give us your feedback.

Virginia North Carolina This graphic is available at: refresh/graphics_at1+shtm l/ shtml?inundation #contents refresh/graphics_at1+shtm l/ shtml?inundation #contents

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Remember: this briefing only addresses flooding impacts to our inland rivers. See your NWS Weather Forecast Office and local media for information on other impacts possible from this storm. Binghamton, NY Blacksburg, VA Mt Holly, NJ State College, PA New York City, NY Sterling, VA Wakefield, VA The next MARFC briefing will be around Noon, Thursday, July 3rd.