Hydrometeorological Discussion
Issued by NWS Middle Atlantic RFC

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AGUS71 KRHA 201411
HMDRHA

HYDROMETEOROLOGICAL DISCUSSION
MIDDLE ATLANTIC RIVER FORECAST CENTER
NATIONAL WEATHER SERVICE STATE COLLEGE PA
 911 AM EST SAT DEC 20 2014

A weak weather system and best moisture will pass south
of Virginia today and move off the Carolina coast this
afternoon.  Dirty High pressure will then extend from
eastern Canada into the Mid Atlantic region through Sunday
and provide fair/dry weather.  Another weak weather system
will lift northeastward from the gulf coast and bring light
precipitation to Virginia northward into Maryland, New
Jersey and parts of Pennsylvania from 12Z Mon through 12Z
Tuesday.

A stronger upper level trough with a slight negative tilt
aloft combining with both Gulf and Atlantic moisture will
bring a moderate to heavy rain event Wednesday and Wednesday
night across our Hydrologic Service area.

With generally light QPF of two tenths /0.20/ of an inch or
less forecasted through 12Z Tuesday, expect only minor changes
in river and stream levels over the next 72 hours.  All MARFC
river and stream forecasts will be issued before 11am.

DAS



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