Hydrometeorological Discussion
Issued by NWS Northeast RFC

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AGUS71 KTAR 221626
HMDTAR
HYDROMETEOROLOGICAL DISCUSSION
NATIONAL WEATHER SERVICE
NORTHEAST RIVER FORECAST CENTER...TAUNTON...MA
1223 PM EDT FRI AUG 22 2014

HYDROMETEOROLOGICAL DISCUSSION:
:
A LINGERING UPPER LEVEL TROUGH BROUGHT SCATTERED TO NUMEROUS
SHOWERS AND THUNDERSTORMS ACROSS CENTRAL AND EASTERN NEW YORK
AND CENTRAL AND SOUTHERN NEW ENGLAND DURING THE PAST 24 HOURS.
BASIN AVERAGE AMOUNTS RANGED FROM 0.10 TO 1.00 INCH ACROSS THESE
AREAS WITH SOME LOCALLY HIGHER POINT TOTALS NOTED PARTICULARLY
ACROSS CENTRAL NEW YORK STATE SOUTHERN VERMONT AND SOUTHERN NEW
HAMPSHIRE.
:
THE UPPER LEVEL TROUGH WILL GRADUALLY TRANSLATE EAST OF NEW YORK
AND NEW ENGLAND...ALLOWING FOR HIGH PRESSURE TO BUILD ACROSS THE
REGION THIS WEEKEND. UPPER LEVEL DISTURBANCES THIS AFTERNOON AND
SATURDAY ALONG WITH DAYTIME INSTABILITY CAUSED BY SURFACE HEATING
WILL BRING MORE SCATTERED SHOWERS AND THUNDERSTORMS DURING THE
NEXT 24 TO 36 HOURS. HOWEVER THE COVERAGE AND INTENSITY WILL
CONTINUE TO DECREASE AS MOISTURE DECREASES ACROSS THE REGION.
:
48 HOUR BASIN AVERAGE PRECIPITATION AMOUNTS THROUGH EARLY SUNDAY
MORNING ARE ANTICIPATED TO RANGE FROM 0.25 INCH OR LESS. HOWEVER
SOME LOCALLY HIGHER POINT TOTALS UP TO ONE INCH ARE POSSIBLE.
:
TOP TEN POINT PRECIPITATION TOTALS DURING THE PAST 24 HOURS...
:
LOCATION                         AMOUNT IN INCHES
:
DANBURY 2.2 ESE NEW HAMPSHIRE         2.08
SALISBURY NEW HAMPSHIRE               1.96
WESTMORELAND NEW YORK                 1.89
PORT JERVIS NEW YORK                  1.88
MASCOMA NEW HAMPSHIRE                 1.63
CONCORD 3.8 SSE NEW HAMPSHIRE         1.63
LANDGROVE VERMONT                     1.55
MANCHESTER NEW HAMPSHIRE              1.53
STARK FALLS RESERVOIR NEW YORK        1.52
VERNON 0.4 NNW NEW YORK               1.51
:
HYDROLOGIC DISCUSSION:
:
MINOR ADDITIONAL RIVER RISES OF A FOOT OR LESS ARE FORECAST WITH
THE RAINFALL ANTICIPATED OVER THE NEXT COUPLE DAYS. MANY RIVER
LEVELS HAVE CRESTED AND ARE FORECAST TO RECEDE.
:
SHOWERS AND LOCALLY HEAVY DOWNPOURS YESTERDAY AND EARLY THIS
MORNING RESULTED IN MINOR TO SMALL RISING RIVER RESPONSES OF 3 FT
OR LESS DURING THE PAST 24 HOURS. SUCH RISING RESPONSES WERE
UNDERWAY YESTERDAY AFTERNOON AND OVERNIGHT FOR MANY RIVER FORECAST
LOCATIONS ACROSS NEW YORK STATE, VERMONT, NEW HAMPSHIRE AND
WESTERN MASSACHUSETTS. RIVER LEVELS GENERALLY CONTINUED TO DECLINE
OR HOLD NEARLY STEADY AT FORECAST LOCATIONS IN SOUTHEASTERN NEW
YORK STATE, CONNECTICUT AND MAINE AND FOR BASINS WHERE NEGLIGIBLE
RAINFALL OCCURRED.
:
FROM THE USGS WATERWATCH WEB PAGE, 7-DAY AVERAGE STREAMFLOWS
COMPARED WITH HISTORICALLY RECORDED FLOWS FOR YESTERDAY, 8/21 ARE
GENERALLY NORMAL TO MUCH ABOVE NORMAL ACROSS OF NEW YORK STATE AND
NEW ENGLAND. ONLY A FEW LOCATIONS IN SOUTHEASTERN NEW YORK STATE,
SOUTHEASTERN MASSACHUSETTS AND SOUTHERN RHODE ISLAND ARE
REPORTING FLOWS BELOW 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:                ERICK BOEHMLER




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