weather.gov     
National Weather Service

Watches, Warnings & Advisories
NWS Homepage

Flash Flood Watch


Flood Watch
National Weather Service Mount Holly NJ
316 PM EDT Sun Jul 23 2017

DEZ001-MDZ008-NJZ001-007>010-012-013-015>019-PAZ054-055-060>062-
070-071-101>106-241000-
/O.NEW.KPHI.FF.A.0004.170723T2200Z-170724T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle-Cecil-Sussex-Warren-Morris-Hunterdon-Somerset-
Middlesex-Western Monmouth-Mercer-Salem-Gloucester-Camden-
Northwestern Burlington-Carbon-Monroe-Berks-Lehigh-Northampton-
Delaware-Philadelphia-Western Chester-Eastern Chester-
Western Montgomery-Eastern Montgomery-Upper Bucks-Lower Bucks-
Including the cities of Wilmington, Elkton, Newton, Washington,
Morristown, Flemington, Somerville, New Brunswick, Freehold,
Trenton, Pennsville, Glassboro, Camden, Cherry Hill, Moorestown,
Mount Holly, Jim Thorpe, Stroudsburg, Reading, Allentown,
Bethlehem, Easton, Media, Philadelphia, Honey Brook, Oxford,
West Chester, Kennett Square, Collegeville, Pottstown,
Norristown, Lansdale, Chalfont, Perkasie, Morrisville,
and Doylestown
316 PM EDT Sun Jul 23 2017

...FLASH FLOOD WATCH IN EFFECT FROM 6 PM EDT THIS EVENING THROUGH
LATE TONIGHT...

The National Weather Service in Mount Holly has issued a

* Flash Flood Watch for the Pennsylvania counties of Carbon,
  Monroe, Northampton, Lehigh, Berks, Chester, Montgomery, Bucks,
  Delaware and Philadelphia, for the New Jersey counties of
  Sussex, Warren, Morris, Hunterdon, Somerset, Middlesex, Mercer,
  Monmouth, Burlington, Camden, Gloucester and Salem, for New
  Castle County in Delaware, and for Cecil County in Maryland

* From 6 PM EDT this evening through late tonight

* Showers and thunderstorms with heavy rain will move through
  eastern Pennsylvania, northeastern Maryland, Delaware and New
  Jersey during the balance of today and into tonight. Rainfall
  amounts up to 2 to 4 inches are possible. The heavy rain will
  fall in a short amount of time and it may result in flash
  flooding.

* Heavy rain falling in a short period of time will result in
  rapidly rising water levels along streams and creeks and in
  areas of poor drainage. Significant roadway flooding may occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that flash flooding is possible. Flash
flooding is very dangerous.

Please monitor the forecast and be prepared to take action if a
Flash Flood Warning is issued for your location.

Do not drive through flood waters. The water may be deeper than
you think it is. A vehicle can easily become trapped in flood
waters endangering its occupants and those who come to their
rescue.

&&

$$

Iovino

Flood Watch
National Weather Service Binghamton NY
929 PM EDT Sun Jul 23 2017

NYZ024-025-044>046-055>057-062-PAZ038>040-043-044-047-048-072-
240930-
/O.CON.KBGM.FF.A.0009.000000T0000Z-170724T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Chemung-Tompkins-Cortland-Chenango-Otsego-Tioga-Broome-Delaware-
Sullivan-Bradford-Susquehanna-Northern Wayne-Wyoming-Lackawanna-
Luzerne-Pike-Southern Wayne-
Including the cities of Elmira, Ithaca, Cortland, Norwich,
Oneonta, Owego, Waverly, Binghamton, Delhi, Walton, Monticello,
Sayre, Towanda, Hallstead, Montrose, Damascus, Equinunk,
Tunkhannock, Scranton, Hazleton, Wilkes-Barre, Milford,
and Honesdale
929 PM EDT Sun Jul 23 2017

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH MONDAY MORNING...

The Flash Flood Watch continues for

* Portions of central New York and northeast Pennsylvania,
  including the following areas, in central New York, Broome,
  Chemung, Chenango, Cortland, Delaware, Otsego, Sullivan,
  Tioga, and Tompkins. In northeast Pennsylvania, Bradford,
  Lackawanna, Luzerne, Northern Wayne, Pike, Southern Wayne,
  Susquehanna, and Wyoming.

* Through Monday morning

* Bands of showers and thunderstorms, some with very heavy rain,
  are organizing this evening over the watch area. Rainfall rates
  of 1 to 2 inches per hour are likely in the more intense
  activity, with total overnight rainfall of up to 2 to 3 inches,
  and locally higher. Given already saturated ground conditions,
  the threat of flash flooding will continue, especially for the
  Southern Tier of New York into the western Catskills, as well as
  all of northeast Pennsylvania.

* Most favorable areas for flash flooding are the poor drainage
  areas in and around urban locations, and the sensitive areas
  that have recently received heavy rain and experienced
  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.

&&

$$

Jurewicz

Flood Watch
National Weather Service Baltimore MD/Washington DC
922 PM EDT Sun Jul 23 2017


DCZ001-MDZ004>006-011-013-014-503>508-240700-
/O.CON.KLWX.FF.A.0005.000000T0000Z-170724T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
District of Columbia-Frederick MD-Carroll-Northern Baltimore-
Southern Baltimore-Prince Georges-Anne Arundel-
Northwest Montgomery-Central and Southeast Montgomery-
Northwest Howard-Central and Southeast Howard-Northwest Harford-
Southeast Harford-
Including the cities of Washington, Frederick, Ballenger Creek,
Eldersburg, Westminster, Reisterstown, Cockeysville, Baltimore,
Bowie, Suitland-Silver Hill, Clinton, College Park, Greenbelt,
Laurel, Camp Springs, Glen Burnie, Annapolis, Severn, South Gate,
Severna Park, Arnold, Odenton, Germantown, Damascus, Bethesda,
Rockville, Gaithersburg, Silver Spring, Lisbon, Columbia,
Ellicott City, Jarrettsville, and Aberdeen
922 PM EDT Sun Jul 23 2017

...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 3 AM EDT MONDAY...

The Flash Flood Watch continues for

* Portions of Maryland and The District of Columbia, including
  the following areas, in Maryland, Anne Arundel, Carroll,
  Central and Southeast Howard, Central and Southeast
  Montgomery, Frederick MD, Northern Baltimore, Northwest
  Harford, Northwest Howard, Northwest Montgomery, Prince
  Georges, Southeast Harford, and Southern Baltimore. The
  District of Columbia.

* Until 3 AM EDT Monday

* Numerous rounds of heavy rain have affected the Baltimore-
  Washington metropolitan area this weekend. Additional showers
  and thunderstorms are expected to develop this evening...and
  continue into the overnight hours.

* Heavy rainfall on saturated soil may result in rapid rises of
  water. This could quickly result in flooding...especially in low
  lying and poor drainage areas. In addition...any showers or
  thunderstorms north of Baltimore would reaggravate flooding
  from late this afternoon.

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.

&&

$$

HTS

Flood Watch
National Weather Service State College PA
513 PM EDT Sun Jul 23 2017


PAZ012-027-036-045-064-240515-
/O.EXA.KCTP.FF.A.0008.000000T0000Z-170724T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Northern Clinton-Mifflin-Franklin-Southern Clinton-Adams-
Including the cities of Renovo, Lewistown, Chambersburg,
Lock Haven, and Gettysburg
513 PM EDT Sun Jul 23 2017

...FLASH FLOOD WATCH IN EFFECT UNTIL 5 AM EDT MONDAY...

The National Weather Service in State College has expanded the

* Flash Flood Watch to include a portion of central
  Pennsylvania, including the following areas, Adams, Franklin,
  Mifflin, Northern Clinton, and Southern Clinton.

* Until 5 AM EDT Monday

* Heavy rainfall from current thunderstorms will be followed by a
  short break in some areas before rain returns later tonight.
  The rain may be heavy enough to cause flash flooding,
  particularly in areas which have seen heavy rain over the last
  day or two.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Review flood safety and preparedness information at
weather.gov/flood.

&&

$$

Flood Watch
National Weather Service State College PA
513 PM EDT Sun Jul 23 2017


PAZ028-041-042-046-049>053-056>059-063-065-066-240515-
/O.CON.KCTP.FF.A.0008.000000T0000Z-170724T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Juniata-Northern Lycoming-Sullivan-Southern Lycoming-Union-Snyder-
Montour-Northumberland-Columbia-Perry-Dauphin-Schuylkill-Lebanon-
Cumberland-York-Lancaster-
Including the cities of Mifflintown, Trout Run, Laporte,
Williamsport, Lewisburg, Selinsgrove, Danville, Sunbury,
Shamokin, Bloomsburg, Berwick, Newport, Harrisburg, Hershey,
Pottsville, Lebanon, Carlisle, York, and Lancaster
513 PM EDT Sun Jul 23 2017

...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 5 AM EDT MONDAY...

The Flash Flood Watch continues for

* A portion of central Pennsylvania, including the following
  areas, Columbia, Cumberland, Dauphin, Juniata, Lancaster,
  Lebanon, Montour, Northern Lycoming, Northumberland, Perry,
  Schuylkill, Snyder, Southern Lycoming, Sullivan, Union, and
  York.

* Until 5 AM EDT Monday

* Heavy rainfall from current thunderstorms will be followed by a
  short break in some areas before rain returns later tonight. The
  rain may be heavy enough to cause flash flooding, particularly
  in areas which have seen heavy rain over the last day or two.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Review flood safety and preparedness information at
weather.gov/flood.

&&

$$

Dangelo

Flood Watch
National Weather Service New York NY
341 PM EDT Sun Jul 23 2017

...Flooding Possible Late Tonight into Monday Morning...

NJZ002-004-006-103>108-NYZ067-069-071>075-078-080-176>179-241000-
/O.NEW.KOKX.FF.A.0003.170724T0400Z-170724T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Western Passaic-Eastern Passaic-Hudson-Western Bergen-
Eastern Bergen-Western Essex-Eastern Essex-Western Union-
Eastern Union-Orange-Rockland-Southern Westchester-
New York (Manhattan)-Bronx-Richmond (Staten Island)-
Kings (Brooklyn)-Northwestern Suffolk-Southwestern Suffolk-
Northern Queens-Northern Nassau-Southern Queens-Southern Nassau-
341 PM EDT Sun Jul 23 2017

...FLASH FLOOD WATCH IN EFFECT FROM MIDNIGHT EDT TONIGHT THROUGH
MONDAY MORNING...

The National Weather Service in Upton has issued a

* Flash Flood Watch for portions of northeast New Jersey and
  southeast New York, including the following areas, in
  northeast New Jersey, Eastern Bergen, Eastern Essex, Eastern
  Passaic, Eastern Union, Hudson, Western Bergen, Western Essex,
  Western Passaic, and Western Union. In southeast New York,
  Bronx, Kings (Brooklyn), New York (Manhattan), Northern
  Nassau, Northern Queens, Northwestern Suffolk, Orange,
  Richmond (Staten Island), Rockland, Southern Nassau, Southern
  Queens, Southern Westchester, and Southwestern Suffolk.

* From midnight EDT tonight through Monday morning

* An area of low pressure will develop along a frontal boundary to
  our south and pass just south and east of Long Island. Rainfall
  rates of 1 to 2 inches an hour are possible and may lead to
  flash flooding the New York City metro and surrounding areas.
  Flash flooding will also be possible for portions of the Lower
  Hudson Valley.

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.

&&

$$

U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: June 2, 2009
NATIONAL WEATHER SERVICE: for Safety, for Work, for Fun - FOR LIFE