Hydrometeorological Discussion
Issued by NWS Middle Atlantic RFC

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AGUS71 KRHA 031448
HMDRHA

HYDROMETEOROLOGICAL DISCUSSION
MIDDLE ATLANTIC RIVER FORECAST CENTER
NATIONAL WEATHER SERVICE STATE COLLEGE PA
 947 AM EST TUE MAR 03 2015

Low pressure will pass North and West of our
hydrologic service area Today.  The associated
warm front and eventual cold front will bring a
wintry mix of snow, sleet, freezing rain and rain
to the Mid Atlantic through tonight.  A cold front
will begin to push across New York state early
Wednesday then creep southward into Virginia before
stalling out across the Mid Atlantic.  Waves of
low pressure will ripple east-northeast along this
stalled out boundary and bring more freezing rain
and rain.  As colder air begins to filter back into
the Mid Atlantic expect a changeover to sleet and
snow (from North to South) Wednesday, Wednesday
night into early Thursday.

72 hour basin average QPF (water equivalents) are
expected to range from four tenths /0.40/ of an
inch to just under two inches /2.00/ inches.
The combination of expected precipitation and
some snowmelt will produce several foot rises
throughout our Maryland and Virginia river basins.
Please refer to MARFC`s river and stream forecasts
for the latest stage and forecast information.

Ice effects continue across rivers and Streams,
especially across New York, Pennsylvania into New
Jersey.  Abrupt fluctuations of several feet are
quite possible.

All MARFC guidance will be issued before 11am.  If
any WFO`s have any questions or concerns, just call
MARFC.

DAS




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