Hydrometeorological Discussion
Issued by NWS Middle Atlantic RFC

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AGUS71 KRHA 091434
HMDRHA

HYDROMETEOROLOGICAL DISCUSSION
MIDDLE ATLANTIC RIVER FORECAST CENTER
NATIONAL WEATHER SERVICE STATE COLLEGE PA
930 AM EST TUE FEB 09 2016

...WINTER WEATHER RETURNING TO THE MID-ATLANTIC REGION...

LOW PRESSURE MOVING SOUTHEAST FROM THE GREAT LAKES MONDAY SPREAD
SNOW INTO THE MID-ATLANTIC REGION MONDAY NIGHT AND EARLY THIS
MORNING. THE HIGHEST OBSERVED LIQUID PRECIPITATION AMOUNTS WERE
AROUND THREE TENTHS OF AN INCH WITH SNOWFALL REPORTS UP TO A FEW
INCHES.

 AMT    LOCATION                       COUNTY           ST   NWSID
 0.34   LONG GREEN 0.6SW COCO          BALTIMORE        MD   MDBL09
 0.27   GAITHERSBURG 3.1NE COCO        MONTGOMERY       MD   MDMG63
 0.27   POTOMAC 0.9NNW COCO            MONTGOMERY       MD   MDMG03
 0.26   VIENNA 1.3W COCO               FAIRFAX          VA   VAFX51
 0.25   CAPE CHARLES 5ENE CRN          NORTHAMPTON      VA   CCHV2
 0.23   MCLEAN 1.5S COCO               FAIRFAX          VA   VAFX52
 0.23   MT AIRY 0.2SE COCO             CARROLL          MD   MDCR03
 0.23   DEHART DAM                     DAUPHIN          PA   DHDP1
 0.22   GLASGOW 6.9SSE COCO            FAIRFAX          VA   VAFX01
 0.22   HERSHEY                        DAUPHIN          PA   HERP1
 0.22   BAYARD                         GRANT            WV   BAYW2
 0.20   MANASSAS COOP                  INDEPENDENT CIT  VA   MNNV2
 0.20   DULLES AP                      FAIRFAX          VA   IAD
 0.19   COLUMBIA 2.3N COCO             HOWARD           MD   MDHW18
 0.18   ROUND HILL 2.7WSW COCO         LOUDOUN          VA   VALD13

LOW PRESSURE WILL ORGANIZE OFF THE MID-ATLANTIC COAST TODAY. SNOW
WILL FALL FROM NORTHERN VIRGINIA AND THE DELMARVA PENINSULA
NORTHWARD INTO NEW YORK STATE. MANY AREAS WILL RECEIVE ONE QUARTER
INCH OR LESS OF LIQUID PRECIPIATION WITH UP TO THREE QUARTERS OF AN
INCH POSSIBLE IN NORTHERN AND EASTERN MARYLAND AND DELAWARE.

A NORTHWEST FLOW OF COLDER CANDADIAN AIR WILL ARRIVE WEDNESDAY WITH
LAKE EFFECT SNOW DEVELOPING IN THE UPPER SUSQUEHANNA BASIN. LAKE
EFFECT SNOW WILL CONTINUE THROUGH THURSDAY BEFORE TAPERING OFF
THURSDAY NIGHT.

ARCTIC AIR WILL ARRIVE FOR THE WEEKEND ALONG WITH THE COLDEST
TEMPERATURES OF THE WINTER SEASON SO FAR.

ON AREA RIVERS AND CREEKS, MINOR CHANGES ARE EXPECTED THROUGHOUT THE
BASINS INTO THE WEEKEND. ICE EFFECTS WILL INCREASE ACROSS THE
NORTHERN AND WESTERN BASINS INTO THE WEEKEND.

TJR
NNNN





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