Flash Flood Update

Posted by Danielle Niles July 1, 2009 at 12:41 pm

See complete listing for Natioanal Weather Service watches and warning’s here.

NATIONAL WEATHER SERVICE NEW YORK NY
349 PM EDT WED JUL 1 2009

…HEAVY RAIN EXPECTED FROM LATE TONIGHT INTO THURSDAY EVENING…

.WEAK LOW PRESSURE DEVELOPING OVER THE DELMARVA REGION THIS
EVENING WILL MOVE SLOWLY NORTHEAST TONIGHT…AND THEN PASS OVER
THE REGION ON THURSDAY. THE LOW AND ITS ATTENDANT WARM FRONT WILL
SPUR THE DEVELOPMENT OF NUMEROUS SHOWERS AND THUNDERSTORMS FROM
LATE TONIGHT INTO THURSDAY EVENING…WITH THE POTENTIAL FOR
FLASH FLOODING.

349 PM EDT WED JUL 1 2009

…FLASH FLOOD WATCH IN EFFECT FROM MIDNIGHT EDT TONIGHT THROUGH
THURSDAY EVENING…

THE NATIONAL WEATHER SERVICE IN UPTON HAS ISSUED A

* FLASH FLOOD WATCH FOR ALL OF SOUTHERN CONNECTICUT…NORTHEAST
NEW JERSEY AND SOUTHEAST NEW YORK.

* FROM MIDNIGHT EDT TONIGHT THROUGH THURSDAY EVENING.

* RECENT HEAVY RAINFALL HAS LEFT SATURATED SOIL CONDITIONS ACROSS
THE AREA. WEAK LOW PRESSURE AND AN ASSOCIATED WARM FRONT MOVING
UP TOWARD THE AREA FROM THE SOUTH WILL SPARK NUMEROUS SHOWERS
AND THUNDERSTORMS FROM LATE TONIGHT INTO THURSDAY EVENING…SOME
OF WHICH MAY PRODUCE TORRENTIAL RAINFALL.

* RAINFALL OF 1 TO 2 INCHES…WITH LOCALLY HIGHER AMOUNTS OF 2 TO
4 INCHES…COULD LEAD TO FLASH FLOODING OF SMALL STREAMS…URBAN
AND POOR DRAINAGE AREAS.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION.
YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

NATIONAL WEATHER SERVICE TAUNTON MA
303 PM EDT WED JUL 1 2009

303 PM EDT WED JUL 1 2009

…FLASH FLOOD WATCH IN EFFECT THROUGH THURSDAY EVENING…

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS EXPANDED THE

* FLASH FLOOD WATCH TO INCLUDE PORTIONS OF NORTHERN
CONNECTICUT…MASSACHUSETTS AND RHODE ISLAND…INCLUDING THE
FOLLOWING AREAS…IN NORTHERN CONNECTICUT…WINDHAM CT. IN
MASSACHUSETTS…CENTRAL MIDDLESEX MA…EASTERN ESSEX MA…
EASTERN NORFOLK MA…EASTERN PLYMOUTH MA…NORTHERN BRISTOL
MA…NORTHERN MIDDLESEX MA…NORTHERN WORCESTER MA…SOUTHEAST
MIDDLESEX MA…SOUTHERN BRISTOL MA…SOUTHERN PLYMOUTH MA…
SOUTHERN WORCESTER MA…SUFFOLK MA…WESTERN ESSEX MA…
WESTERN NORFOLK MA AND WESTERN PLYMOUTH MA. IN RHODE ISLAND…
BRISTOL RI…EASTERN KENT RI…NEWPORT RI…NORTHWEST
PROVIDENCE RI…SOUTHEAST PROVIDENCE RI…WASHINGTON RI AND
WESTERN KENT RI.

* THROUGH THURSDAY EVENING

* A SLOW MOVING FRONT AND DEEP MOISTURE WILL ALLOW SHOWERS AND
THUNDERSTORMS TO PERSIST THROUGH THURSDAY.

* AREAS OF SHOWERS AND THUNDERSTORMS WILL CROSS THROUGH SOUTHERN NEW
ENGLAND DURING THIS AFTERNOON THROUGH TOMORROW. SOME OF THE
THUNDERSTORMS MAY PRODUCE HEAVY RAINS OF UP TO 4 INCHES OR MORE IN
A BRIEF PERIOD OF TIME. THIS BRINGS THE THREAT FOR FLASH FLOODING.
IN MANY LOCATIONS THE GROUND IS ALREADY SATURATED FROM RAINFALL
THAT HAS OCCURRED TODAY. URBAN FLASH FLOODING IS OF PARTICULAR CONCERN.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION.

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.