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August 6, 2018 A very wet July left much of the eastern two thirds of Pennsylvania 4 to 11 inches above normal rainfall. Southern New York, easternmost Pennsylvania, and New Jersey range from normal to 4 inches above. July temperatures were mostly 1 to 3 degrees above normal. So far in August, most areas are 1.5 to over 4 inches above average rainfall with the southern half of New Jersey about normal, plus or minus under an inch. Over the past 90 days, rainfall has been 7 to 15 inches above normal for much of the eastern two thirds of Pennsylvania. Rainfall has been mostly normal to more than 5 inches above in southern New York, north-central and eastern-most Pennsylvania, and New Jersey.

Current (August 6) data from the U.S. Geological Survey shows that streamflows are much above normal, but closer to normal in the southern half of New Jersey. Groundwater levels are mostly much above normal.

The weather outlook through the next couple of weeks calls for near or above average rainfall with above average temperatures. The NWS Climate Prediction Center's 30 day outlook for August calls for above normal rainfall and temperatures. The 90 day outlook for August through October calls for near average rainfall and above average temperatures.

As a result of recent excessive rainfall, the outlook for water resources and supplies is very good for the eastern two thirds of Pennsylvania. The outlook is good for southern New York and New Jersey. These conditions are expected to continue for the next couple of weeks, but are then likely to be downgraded since it is still summer and this amount of rainfall is unlikely to continue.


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