June 1, 2015 Despite some areas of heavy rain to end the month, May
still ended quite dry for many parts of the northern portion of the
MARFC service area. Much of southern New York and the northern half
of Pennsylvania were near average, plus or minus up to an inch or so
of rain. For New Jersey, the southern half of Pennsylvania, and even
much or northeastern Pennsylvania, rainfall was 1 to as much as 3
inches below normal. May was very warm ending as a top 10 for warmest
with some locations even experiencing the warmest May on record.
Temperatures were 5 1/2 to 7 1/2 degrees above normal. Over the past
90 days, precipitation has been about normal plus or minus an inch or
two in much of southern New York and Pennsylvania. Parts of
south-central and eastern Pennsylvania, the Catskill Region of New
York, and most of New Jersey are running 2 to 4 inches below average.
Current (June 1) streamflow data from the U.S. Geological Survey
shows that streamflows are experiencing higher levels due to recent
rainfall and are generally near or above normal in southern New York,
Pennsylvania, and New Jersey. These levels are likely to drop at
least back to normal once the effect of the recent rain passes through
the basin. Groundwater levels are below or much below normal as well
though some are still within the normal range in southern New York and
southern New Jersey.
As a result of this recent dryness, the May 28 US Drought Monitor
shows that several counties in eastern Pennsylvania, the northern
third of New Jersey, and southern-most New York are in "Moderate
Drought." This means that some damage to crops and pastures could
occur; streams, reservoirs, or wells are low; some water shortages are
developing or are imminent; and voluntary water-use restrictions may
The outlook for water resources and water supplies is good to fair
across southern New York and northern Pennsylvania. The outlook is
fair to poor for southern Pennsylvania and New Jersey. Though recent
rain has helped, overall, rainfall frequency and amounts have
decreased considerably over the past 30 to 60 days creating noticeable
deficits. Areas further north have had more rainfall allowing
conditions to remain fairly wet, at least for now. This lack of
rainfall is having an effect on streamflows, topsoil and groundwater.
Further effects may appear as we move further into the warm season and
if rainfall remains below normal. Longer term precipitation deficits
are also growing during this near term lack of rainfall. The outlook
for rainfall is promising and may continue to help ease some of the
dry conditions. However, further degrading of this outlook is still
possible in the event that this rainfall does not materialize.