Hydrometeorological Discussion
Issued by NWS Northeast RFC

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AGUS71 KTAR 211622
HMDTAR
HYDROMETEOROLOGICAL DISCUSSION
NATIONAL WEATHER SERVICE
NORTHEAST RIVER FORECAST CENTER...TAUNTON...MA
1212 PM EDT SUN SEP 21 2014

HYDROMETEOROLOGICAL DISCUSSION:
:
A PLUME OF TROPICAL MOISTURE ARRIVED ACROSS SOUTHERN NEW ENGLAND
OVERNIGHT IN ADVANCE OF LOW PRESSURE DEVELOPING OFF THE SOUTHEAST
ATLANTIC COAST. IN ADDITION A COLD FRONT WAS ADVANCING EAST FROM
THE GREAT LAKES REGION. 24 HOUR BASIN AVERAGE PRECIPITATION
AMOUNTS ENDING 8AM THIS SUNDAY MORNING DEPICTED A NARROW BAND OF 0
.25 TO 1.00 INCH AMOUNTS FROM WESTERN LONG ISLAND THROUGH
CONNECTICUT AND SOUTHERN NEW HAMPSHIRE. ELSEWHERE IN FAR WESTERN
NEW YORK STATE AND NORTHERN MAINE AMOUNTS RANGED FROM A TRACE UP
TO 0.25 INCH.
:
A COLD FRONT WILL MOVE ACROSS NEW YORK AND NEW ENGLAND THIS
AFTERNOON AND TONIGHT THEN GRADUALLY HEAD OFFSHORE ON MONDAY.
THE FRONT WILL PRODUCE A PERIOD OF SHOWERS AND A FEW THUNDERSTORMS
PRIMARILY ACROSS UPSTATE NEW YORK AND NORTHERN
NEW ENGLAND.
:
48 HOUR BASIN AVERAGE PRECIPITATION AMOUNTS THROUGH MONDAY NIGHT
ARE FORECAST TO RANGE FROM 0.25 TO 0.75 INCH IN WESTERN CENTRAL
AND NORTHERN NEW YORK STATE AS WELL AS NORTHERN NEW ENGLAND AND
0.25 INCH OR LESS ELSEWHERE.
:
HYDROLOGIC DISCUSSION:
:
RIVER LEVELS ACROSS THE NORTHEAST REGION ARE GENERALLY IN
RECESSION OR HOLDING AT STEADY LEVELS.  ONLY A COUPLE MINOR RISES
WERE OBSERVED ALONG SMALLER RIVERS IN CENTRAL MA, CENTRAL CT AND
SOUTHERN NH.  SIMILAR SMALL RISES CAN BE EXPECTED DURING HE NEXT
24 HOURS ACROSS NORTHERN NE WHERE THE HIGHER RAINFALL AMOUNTS WILL
OCCUR.
:
ACCORDING TO THE USGS WATER WATCH WEBPAGE, 7-DAY AVERAGE
STREAMFLOWS ACROSS MOST OF THE NORTHEAST REGION ARE RUNNING AT
NORMAL TO SLIGHTLY ABOVE NORMAL LEVELS FOR MID TO LATE SEPTEMBER.
HOWEVER, ACROSS SOUTHERN NEW ENGLAND AND SOUTHEAST NEW YORK, RIVER
FLOWS ARE MOSTLY BELOW TO WELL BELOW NORMAL.
:
FLOOD OUTLOOK DISCUSSION:
:
THE NERFC FLOOD POTENTIAL OUTLOOK GRAPHIC INDICATES SIGNIFICANT
RIVER FLOODING IS NOT EXPECTED IN THE NORTHEASTERN UNITED STATES
DURING THE NEXT FIVE DAYS.
:
THE FLOOD OUTLOOK GRAPHIC IS AVAILABLE ON THE WEB AT:
:
HTTP://WWW.WEATHER.GOV/NERFC/FOP
:
ADDITIONAL WATER AND WEATHER RELATED INFORMATION CAN BE FOUND ON
THE NWS/NERFC HOME PAGE AT http://www.nws.noaa.gov/er/nerfc
:
$$
:
HYDROMETEOROLOGICAL DISCUSSION:       NEAL STRAUSS
HYDROLOGIC DISCUSSION:                NORM BINGHAM




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