September 16, 2017 September rainfall has been about average plus
or minus and inch or so in Maryland, Delaware, the eastern panhandle
of West Virginia, and Virginia. Temperatures have been cool averaging
3 to 6 degrees below normal. Over the past 90 days, rainfall has been
5 to over 11 inches above normal in Delaware, much of Maryland, and
northeastern Virginia. Rainfall has been 2 to 4 inches below in
central and western Virginia and about normal elsewhere.
Current (September 16) streamflow data from the U.S. Geological
Survey shows that streamflows are near normal. Groundwater levels are
mostly near or above normal.
The state of Virginia has a "Drought Watch" in effect for
north-central parts of the
The weather outlook for the rest of September calls for below or
much below normal rainfall, though amounts could increase late in the
period. Temperatures are expected to be above or much above average.
The NWS Climate Prediction Center's 30 day outlook for September calls
for above average rainfall and below average temperatures. The 90 day
outlook for September through November calls for near average
precipitation and above average temperatures.
The outlook for water resources and water supplies is good or very
good for Delaware, Maryland, northern and eastern Virginia, and the
eastern panhandle of West Virginia. The outlook is fair for central
and west-central Virginia. Little change is expected in the near
term. For now, a dry weather pattern has settled in, but it is offset
by a weakening sun and lower water usage. This will, however, be
watched for the longer term.