June 1, 2015 May rainfall was mostly 1 to 3 inches below normal
though some parts of the eastern panhandle of West Virginia, northwest
Virginia, and northern Maryland were about normal, plus or minus an
inch or so. Temperatures were very warm running 4 to over 7 degrees
above normal placing some locations in the top 10 for warmest May.
Over the past 90 days, precipitation has been near normal for many
areas plus or minus and inch or two. Parts of the middle Chesapeake
Bay area are 2 to over 3 inches below normal.
Current (June 1) streamflow data from the U.S. Geological Survey
shows that streamflows are near or below normal though much of
northern Maryland has above normal streamflows as a result of recent
rainfall. Groundwater levels are generally near or below normal.
The weather outlook through the middle of June calls for above
normal rainfall (and possibly much above in the near term).
Temperatures are expected to be above average. The NWS Climate
Prediction Center's 30 day outlook for June calls for above normal
rainfall along with above average temperatures. The 90 day outlook
for June through August calls for near average precipitation and near
The outlook for water resources and water supplies is good for most
of the southern portion of the MARFC service area. The outlook is
good to fair for northern Maryland into Delaware. Rainfall over the
past several weeks indicates that a dry spell has started. Though
still short term, if this overall dryness continues, then longer term
deficits will grow and effects will increase, such as low streamflows,
low groundwater, and dry soils. The outlook for rainfall is promising
and is likely to help ease some of the increasingly dry conditions and
may even improve the outlook. However, further degrading of this
outlook is still possible in the event that this rainfall does not