Hydrometeorological Discussion
Issued by NWS Northeast RFC

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14
000
AGUS71 KTAR 011559
HMDTAR
HYDROMETEOROLOGICAL DISCUSSION
NATIONAL WEATHER SERVICE
NORTHEAST RIVER FORECAST CENTER...TAUNTON...MA
1156 AM EDT FRI AUG 01 2014

HYDROMETEOROLOGICAL DISCUSSION:
:
14Z ( 10 AM EDT ) MSAS ANALYSIS SHOWS HIGH PRESSURE EAST OF NEW
ENGLAND ACROSS NOVA SCOTIA PROVINCE IN CANADA. THE CLOCKWISE FLOW
OF AIR AROUND THIS HIGH IS SLOWLY USHERING IN A MORE HUMID AIRMASS
TO SECTIONS OF SOUTHERN NEW ENGLAND AND SOUTHERN NEW YORK STATE
BUT FOR AUGUST...DEWPOINTS IN THE 60S ARE NOT TOO UNTOLERABLE. IT
REMAINS DRIER ACROSS NORTHERN NEW ENGLAND AND NORTHERN NEW YORK
STATE WHERE DEWPOINTS RANGE FROM THE MID 50S TO AROUND 60.
:
WITH PLENTY OF HEATING TODAY...WIDELY SCATTERED SHOWERS AND
PERHAPS A THUNDERSTORM COULD POP UP ACROSS NEW ENGLAND AND NEW
YORK STATE BUT NO WIDESPREAD HEAVY RAINFALL IS EXPECTED. WE ARE
WATCHING A WARM FRONTAL BOUNDARY CURRENTLY SITUATED SOUTHEAST OF
CAPE HATTERAS IN NORTH CAROLINA. AS THIS HEADS NORTH ON SATURDAY..
.SOME HEAVIER RAINFALL MAY PUSH INTO SOUTHERN NEW ENGLAND AND
SOUTHEASTERN PORTIONS OF NEW YORK STATE WHERE BASIN AVERAGE
RAINFALL OF 0.50 - 1.00 INCHES IS POSSIBLE THROUGH 8 AM EDT SUNDAY
. THERE IS STILL SOME UNCERTAINTY WITH THIS SYSTEM SO THE RAINFALL
FORECASTS HAVE LESS THAN NORMAL CONFIDENCE.
:
OVER THE PAST 24-HOUR PERIOD ENDING AT 8 AM EDT THIS FRIDAY
MORNING...SHOWERS AND THUNDERSTORMS SWEPT ACROSS CENTRAL AND
NORTHERN PORTIONS OF BOTH NEW YORK STATE AND NEW ENGLAND. BASIN
AVERAGE RAINFALL WAS GENERALLY ON THE ORDER OF 0.10 - 0.40 INCHES
ALTHOUGH SOME POINT RAINFALLS DID APPROACH OR SLIGHTLY EXCEED AN
INCH. THE HEAVIEST RAINFALL AMOUNT REPORTED INTO THE NERFC FOR THE
PAST 24-HOUR PERIOD ENDING AT 8 AM EDT THIS MORNING CAME FROM THE
WESTERN MAINE MOUNTAINS WHERE RANGELEY REPORTED 1.38 INCHES.
LITTLE OR NO RAINFALL OCCURRED ALONG THE SOUTH COAST OF NEW
ENGLAND OR ACROSS LONG ISLAND IN SOUTHEASTERN NEW YORK STATE.
:
HYDROLOGIC DISCUSSION:
:
SCATTERED SHOWERS AND STORMS TODAY ALONG WITH MORE WIDE-SPREAD
ADDITIONAL RAINFALL PRIMARILY INTO EASTERN NEW YORK AND NEW
ENGLAND FOR THE EARLY PART OF THE WEEKEND ARE ANTICIPATED. THE
IMPACTS EXPECTED WITH BASIN AREA RAINFALL OF AN INCH OR LESS ARE
MINOR RISING RESPONSES OF A FOOT OR LESS AT SOME RIVER FORECAST
LOCATIONS INTO SUNDAY MORNING. THE HOUSATONIC RIVER REMAINS
ELEVATED AT FALLS VILLAGE, CT BUT THE RAINFALL FORECAST IS NOT
SUFFICIENT TO RESULT IN A RISING RESPONSE AT THIS TIME. MANY RIVER
LEVELS ACROSS NEW YORK STATE AND NORTHERN NEW ENGLAND ARE
FORECAST TO CONTINUE TO DECLINE AT FORECAST LOCATIONS THROUGH THE
WEEKEND.
:
YESTERDAY, SHOWERS AND STORMS DEVELOPED OVER ALL EXCEPT
SOUTHEASTERN NEW YORK STATE AND NORTHERN NEW ENGLAND. RAINFALL
AMOUNTS MOSTLY IN THE RANGE OF 0.25 TO 0.75 INCH PROVIDED FOR
MINOR RISING RESPONSES OF A FOOT OR LESS FOR SOME OF THE MORE
RAPIDLY RESPONSIVE BASINS IN THESE AREAS. ELSEWHERE, RIVER LEVELS
CONTINUED RECEDING TRENDS OF THE PRIOR 24 HOURS.
:
ACCORDING TO THE USGS WATERWATCH WEBPAGE, 7-DAY AVERAGE
STREAMFLOWS RELATIVE TO HISTORICALLY RECORDED FLOWS FOR YESTERDAY,
7/31 GENERALLY RANGE FROM WELL ABOVE NORMAL TO WELL BELOW NORMAL
ACROSS NEW ENGLAND AND NEW YORK STATE. ABOVE NORMAL FLOW
CONDITIONS ARE SITUATED ACROSS WESTERN AND SOUTHEASTERN NEW YORK
STATE, MOST OF VERMONT, NEW HAMPSHIRE, WESTERN MAINE AND WESTERN
PORTIONS OF SOUTHERN NEW ENGLAND. BELOW NORMAL FLOW CONDITIONS ARE
DOMINANT IN EASTERN-CENTRAL MASSACHUSETTS, EASTERN CONNECTICUT,
AND MOST OF RHODE ISLAND. ELSEWHERE, 7-DAY AVERAGE FLOW CONDITIONS
ARE THE NORMAL RANGE.
:
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:       RON HORWOOD
HYDROLOGIC DISCUSSION:                ERICK BOEHMLER




USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.