Full Notification

THE NATIONAL WEATHER SERVICE IN NEW YORK HAS ISSUED A FLASH FLOOD WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH FRIDAY AFTERNOON...

A SLOW MOVING LOW PRESSURE SYSTEM WILL TRACK NORTH FROM THE OHIO VALLEY INTO THE ST LAWRENCE RIVER VALLEY THURSDAY AFTERNOON INTO FRIDAY. HEAVY SHOWERS AND THUNDERSTORMS WILL BECOME INCREASINGLY LIKELY THURSDAY AFTERNOON INTO THURSDAY NIGHT AS THIS SYSTEM INTERACTS WITH A MOIST AND UNSTABLE AIRMASS OVER THE AREA. THIS ACTIVITY WILL CONTINUE INTO FRIDAY.

* THIS SETUP IS CONDUCIVE TO BANDS OF HEAVY RAIN SHOWERS AND THUNDERSTORMS TRAINING OVER THE SAME AREA. LOCALIZED RAINFALL RATES COULD EXCEED 2 INCHES IN AN HOUR IF THUNDERSTORMS TRAIN OVER THE SAME AREA FOR AN HOUR...WHICH WOULD CAUSE URBAN AND SMALL STREAM FLASH FLOODING.

* OVERALL 1 TO 2 INCHES OF RAINFALL ARE EXPECTED ACROSS THE AREA THURSDAY INTO FRIDAY...WITH HIGHER AMOUNTS IN THE PATH OF TRAINING ACTIVITY. THIS WILL LIKELY CAUSE MARKED RISES ON MAIN STEM RIVERS...BUT THEY ARE EXPECTED TO REMAIN WITHIN THEIR BANKS.

* ADDITIONAL BOUTS OF HEAVY SHOWERS AND THUNDERSTORMS ARE POSSIBLE THIS WEEKEND INTO EARLY NEXT WEEK...WHICH MAY PROLONG THE THREAT FOR FLOODING.

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.

A weather watch indicates the potential for severe or damaging weather conditions.