Hydrometeorological Discussion
Issued by NWS Northeast RFC

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AGUS71 KTAR 211623
HMDTAR
HYDROMETEOROLOGICAL DISCUSSION
NATIONAL WEATHER SERVICE
NORTHEAST RIVER FORECAST CENTER...TAUNTON...MA
1222 PM EDT THU AUG 21 2014

HYDROMETEOROLOGICAL DISCUSSION:
:
LOW PRESSURE AND AN UPPER LEVEL DISTURBANCE MOVED ACROSS UPSTATE
NEW YORK INTO FAR WESTERN NEW ENGLAND WEDNESDAY AND WEDNESDAY
NIGHT. THIS SYSTEM BROUGHT NUMEROUS SHOWERS AND THUNDERSTORMS TO
THIS REGION DURING THE PAST 24 HOURS. BASIN AVERAGE TOTALS
GENERALLY RANGED FROM 0.10 TO 1.00 INCH WITH THE HIGHEST AMOUNTS
ACROSS THE EASTERN MOHAWK VALLEY AND THE SOUTHERN ADIRONDACKS.
SOME HIGHER POINT TOTALS FROM 2 TO 4 INCHES WERE NOTED.
:
LOW PRESSURE AND AN UPPER LEVEL DISTURBANCE WILL CONTINUE TO
GRADUALLY HEAD EAST THEN WEAKEN DURING THE NEXT 24 HOURS AS LOW
PRESSURE REFORMS TO THE SOUTH OF NEW ENGLAND. HIGH PRESSURE WILL
BUILD ACROSS NEW YORK AND NEW ENGLAND DURING THE WEEKEND.
:
SCATTERED SHOWERS AND THUNDERSTORMS WILL BE CONCENTRATED ACROSS
CENTRAL AND EASTERN NEW YORK AND WESTERN NEW ENGLAND DURING THE
NEXT 24 TO 36 HOURS.
:
48 HOUR BASIN AVERAGE FORECAST AMOUNTS THROUGH FRIDAY NIGHT RANGE
FROM 0.50 TO 1.00 INCH WITH LOCALLY HIGHER AMOUNTS POSSIBLE ACROSS
CENTRAL AND EASTERN NEW YORK STATE AND WESTERN NEW ENGLAND...AND
NIL TO LESS THAN 0.25 INCH AMOUNTS ANTICIPATED ACROSS WESTERN NEW
YORK AND EASTERN NEW ENGLAND.
:
TOP TEN POINT PRECIPITATION TOTALS DURING THE PAST 24 HOURS...
:
LOCATION                      AMOUNT
:
MECKLENBURG NEW YORK           3.90
INLET NEW YORK                 2.31
NEWCOMB NEW YORK               2.30
PATTERSONVILLE NEW YORK        2.26
THERESA 2.8 S NEW YORK         2.23
BALLSTON SPA 4.7 WNW NEW YORK  2.23
GLOVERSVILLE NEW YORK          2.19
PLAINFIELD CENTER NEW YORK     2.15
UNADILLA NEW YORK              2.14
DUANESBURG NEW YORK            2.06
:
HYDROLOGIC DISCUSSION:
:
DESPITE LOCALLY HEAVY RAIN WEDNESDAY AND EARLY THURSDAY...RIVER
LEVELS SHOWED MOSTLY MINOR RISES. RISES AT NERFC FORECAST POINTS
WERE ON THE ORDER OF 2 FEET OR LESS...WITH MOST LOCATIONS SEEING
RISES OF LESS THAN A FOOT. FLUCTUATIONS DUE TO POWER GENERATION...
RESERVOIR REGULATION...AND TIDAL VARIATION WERE OBSERVED.
:
MINOR ADDITIONAL RIVER RISES ARE EXPECTED FROM THE RAINFALL
FORECAST OVER THE NEXT COUPLE DAYS.
:
7-DAY AVERAGE STREAMFLOWS...AS SHOWN ON THE USGS WATERWATCH
WEBPAGE...ARE GENERALLY NORMAL TO MUCH ABOVE NORMAL ACROSS THE
NERFC REGION. A FEW LOCATIONS IN SOUTHERN NEW YORK AND SOUTHERN
NEW ENGLAND ARE FLOWING BELOW SEASONAL NORMAL LEVELS.
:
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:                JEFF OUELLET




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