By Alex Sosnowski, AccuWeather.com Senior Meteorologist
July 26,2016; 10:53PM,EDT
As July draws to a close, a storm system swinging up from the Deep South will bring downpours to the northeastern U.S. and breaking the back of an extended heat wave.
From Friday into Sunday, there is the potential for enough rain to ease abnormally dry and drought conditions.
Cloud cover and downpours associated with the storm system will cause high temperatures to trend from the 80s F to the 90s in most locations.
The storm will take a general path from the northwestern Gulf of Mexico coast to the Tennessee Valley, across the central Appalachians then off the New England coast.
"The exact track of the storm system will be a challenge to predict," according to AccuWeather Senior Meteorologist Brett Anderson.
At this time, the most likely locations for heavy rainfall will extend from parts of Kentucky to southern portions of Indiana and Ohio, much of West Virginia, northern and western Virginia, northern Maryland, central and southern Pennsylvania, Delaware, New Jersey, southeastern New York state and southern New England.
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Within this swath, there is the potential for a general 1-2 inches of rain with localized amounts of 3-4 inches over the span of a few days. Despite the dry conditions in part of this swath, some locations could experience flash and urban flooding.
The core of the heaviest rain could shift farther north or south, depending on the track of the storm.
"This time of the year, the heaviest rain tends to fall near and south of the storm track, where the warmest and most humid air lies, and where thunderstorms are likely to form and repeat," Anderson said.
The storm system has the potential to bring more rainfall than that which occurred on Monday in parts of the Northeast.
Demonstrators
take shelter from a downpour in Franklin Delano Roosevelt Park, Monday,
July 25, 2016, in Philadelphia, during the first day of the Democratic
National Convention. (AP Photo/Matt Slocum)Because of the random nature of thunderstorms, some locations could still get missed by the big rain.
Later this weekend into early next week, in the wake of the storm system, humidity will lower significantly over the interior Northeast. In the mid-Atlantic, however, humidity levels will lower only slightly.
At least for a couple of days following the rainfall, the moist ground will tend to prevent extremely high temperatures during the daytime. The air at night may tend to remain muggy.
"Despite a little edge taken off the high temperatures by early next week, it will still feel steamy in much of the Northeast," according to AccuWeather Lead Long-Range Meteorologist Paul Pastelok.
Factoring in highs and lows, temperatures may continue to average slightly above normal in most locations during the first week of August.
"We expect another surge of heat and potentially a long-lasting heat wave in the Northeast around the second week of August," Pastelok said.
Anders Updale ·
Even
if the the temperatures don't reach 90 or above, the more humid the air
with temperatures even only in the 80's for peoples bodies if they're
exercising outdoors is it equivilent to a heatwave?
1
Donnie Boston ·
Boston needs rain badly. In a severe drought here, but please, not on the weekend!
Peter Westin ·
Works at Ithaca College
I am liking this, so I hope the heat will be there until it finally breaks down eventually.
Why
is it always Southern Ohio gets all the precip while the northern and
even the Central part of the state keeps getting little or even nothing
at all?The upper 2/3s of Ohio needs as much rain as they can get. Its
like I 70 corridor has a force field/wall/shield 20, 30 miles below it
that prevents precip getting into Columbus and points north. This is a
major issue in the winter time quite often with winter storms and I
can't blame the "Urban Heat Island" effect either. There are many rural
areas in the uppers two thirds of the state that are far away enough
from the cities/urban areas and they seem to miss out on the precip as
well.
Alex Sosnowski ·
I would not write-off northern areas just yet, as a second system may drop in later in the period and produce some downpours.
Works at Binghamton University
Alex
Sosnowski any hope for some decent rain in S. Central NY (ie,
Binghamton)? This has been one of the hottest and driest summers we've
had in many years in these parts...
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