Alert archive / New Jersey / Flood Watches in 2020

Flood Watch 2, NWS Philadelphia/Mount Holly

April 29, 20204 states

NWS Philadelphia/Mount Holly issued this flood watch at Apr 29, 2020, 3:14 AM EDT for 4 states. It took effect at Apr 30, 2020, 2:00 PM EDT. It was in force for 14 hr.

The area

The counties it named.

The facts

Issued
Apr 29, 2020, 3:14 AM EDT (07:14 UTC)
In effect from
Apr 30, 2020, 2:00 PM EDT
Expired
May 1, 2020, 3:31 AM EDT
In force
14 hr
Issued by
NWS Philadelphia/Mount Holly
Flood severity
None
All 29 counties

Kent County, DE, New Castle County, DE, Sussex County, DE, Caroline County, MD, Cecil County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD, Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Morris County, NJ, Salem County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ, Berks County, PA, Bucks County, PA, Carbon County, PA, Chester County, PA, Delaware County, PA, Lehigh County, PA, Monroe County, PA, Montgomery County, PA, Northampton County, PA, Philadelphia County, PA

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 00:00Z, 7.2 hours before the alert went out and 215 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Washington/Dulle, VA at 00:00Z on 2020-04-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Washington/Dulle, VA at 00:00Z on 2020-04-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 213 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1072 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
213 m²/s²
0-3 km storm-relative helicity
375 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

200 
WGUS61 KPHI 290714
FFAPHI

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Mount Holly NJ
314 AM EDT Wed Apr 29 2020

DEZ001>003-MDZ008-012-015-019-020-NJZ001-007>010-015>019-PAZ054-
055-060>062-070-071-101>106-291515-
/O.NEW.KPHI.FA.A.0002.200430T1800Z-200501T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle-Kent-Inland Sussex-Cecil-Kent MD-Queen Annes-Talbot-
Caroline-Sussex-Warren-Morris-Hunterdon-Somerset-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, Dover, Georgetown, Elkton, 
Chestertown, Centreville, Easton, Denton, Newton, Washington, 
Morristown, Flemington, Somerville, Trenton, Pennsville, 
Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, 
Jim Thorpe, Stroudsburg, Reading, Allentown, Bethlehem, Media, 
Philadelphia, Honey Brook, Oxford, West Chester, Kennett Square, 
Collegeville, Pottstown, Norristown, Lansdale, Chalfont, 
Perkasie, Morrisville, and Doylestown
314 AM EDT Wed Apr 29 2020

...FLOOD WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH FRIDAY
AFTERNOON...

The National Weather Service in Mount Holly has issued a

* Flood Watch for portions of Delaware, northeast Maryland, New 
  Jersey, and Pennsylvania, including the following areas, in 
  Delaware, Inland Sussex, Kent, and New Castle. In northeast 
  Maryland, Caroline, Cecil, Kent MD, Queen Annes, and Talbot. 
  In New Jersey, Camden, Gloucester, Hunterdon, Mercer, Morris, 
  Northwestern Burlington, Salem, Somerset, Sussex, and Warren. 
  In Pennsylvania, Berks, Carbon, Delaware, Eastern Chester, 
  Eastern Montgomery, Lehigh, Lower Bucks, Monroe, Northampton, 
  Philadelphia, Upper Bucks, Western Chester, and Western 
  Montgomery. 

* From Thursday afternoon through Friday afternoon

* Periods of heavy rain will begin over western portions of the
  area Thursday afternoon with the threat of heavy rainfall
  progressing eastward Thursday evening into the overnight hours. 
  Rainfall will decrease in intensity Friday morning but impacts 
  from the earlier heavier rainfall may linger into the day on 
  Friday. Rainfall amounts will generally range from 1.5 to 2.5 
  inches over the watch area, however locally higher amounts will 
  be possible particularly over the higher terrain of eastern PA 
  and northwest NJ.

* As a result of the rainfall, poor drainage and low-lying
  flooding may begin late Thursday. Small stream as well as
  mainstem flooding is possible Thursday night into Friday.  
  Please refer to the Advanced Hydrologic Prediction Service 
  (AHPS) website for the latest crest forecasts.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flood Watch means there is a potential for flooding based on
current forecasts.

You should monitor later forecasts and be alert for possible
Flood Warnings. Those living in areas prone to flooding should be
prepared to take action should flooding develop.

&&

$$
7 follow-up statements
865 
WGUS61 KPHI 290717
FFAPHI

Flood Watch
National Weather Service Mount Holly NJ
317 AM EDT Wed Apr 29 2020


DEZ001>003-MDZ008-012-015-019-020-NJZ001-007>010-015>019-PAZ054-
055-060>062-070-071-101>106-292000-
/O.CON.KPHI.FA.A.0002.200430T1800Z-200501T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle-Kent-Inland Sussex-Cecil-Kent MD-Queen Annes-Talbot-
Caroline-Sussex-Warren-Morris-Hunterdon-Somerset-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, Dover, Georgetown, Elkton, 
Chestertown, Centreville, Easton, Denton, Newton, Washington, 
Morristown, Flemington, Somerville, Trenton, Pennsville, 
Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, 
Jim Thorpe, Stroudsburg, Reading, Allentown, Bethlehem, Media, 
Philadelphia, Honey Brook, Oxford, West Chester, Kennett Square, 
Collegeville, Pottstown, Norristown, Lansdale, Chalfont, 
Perkasie, Morrisville, and Doylestown
317 AM EDT Wed Apr 29 2020

...FLOOD WATCH REMAINS IN EFFECT FROM THURSDAY AFTERNOON THROUGH
FRIDAY AFTERNOON...

The Flood Watch continues for

* Portions of Delaware, northeast Maryland, New Jersey, and 
  Pennsylvania, including the following areas, in Delaware, 
  Inland Sussex, Kent, and New Castle. In northeast Maryland, 
  Caroline, Cecil, Kent MD, Queen Annes, and Talbot. In New 
  Jersey, Camden, Gloucester, Hunterdon, Mercer, Morris, 
  Northwestern Burlington, Salem, Somerset, Sussex, and Warren. 
  In Pennsylvania, Berks, Carbon, Delaware, Eastern Chester, 
  Eastern Montgomery, Lehigh, Lower Bucks, Monroe, Northampton, 
  Philadelphia, Upper Bucks, Western Chester, and Western 
  Montgomery. 

* From Thursday afternoon through Friday afternoon

* Periods of heavy rain will begin over western portions of the 
  area Thursday afternoon with the threat of heavy rainfall 
  progressing eastward Thursday evening into the overnight 
  hours. Rainfall will decrease in intensity Friday morning but 
  impacts from the earlier heavier rainfall may linger into the 
  day on Friday. Rainfall amounts will generally range from 1.5 
  to 2.5 inches over the watch area, however locally higher 
  amounts will be possible particularly over the higher terrain 
  of eastern PA and northwest NJ. 

* As a result of the rainfall, poor drainage and low-lying 
  flooding may begin late Thursday. Small stream as well as 
  mainstem flooding is possible Thursday night into Friday. 
  Please refer to the Advanced Hydrologic Prediction Service 
  (AHPS) website for the latest crest forecasts. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flood Watch means there is a potential for flooding based on
current forecasts.

You should monitor later forecasts and be alert for possible
Flood Warnings. Those living in areas prone to flooding should be
prepared to take action should flooding develop.

&&

$$
787 
WGUS61 KPHI 291915
FFAPHI

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Mount Holly NJ
315 PM EDT Wed Apr 29 2020

NJZ012-300930-
/O.EXA.KPHI.FA.A.0002.200430T1800Z-200501T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Middlesex-
Including the city of New Brunswick
315 PM EDT Wed Apr 29 2020

...FLOOD WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH FRIDAY
AFTERNOON...

The National Weather Service in Mount Holly has expanded the

* Flood Watch to include Middlesex County New Jersey. 

* From Thursday afternoon through Friday afternoon.

* Periods of heavy rain will begin late Thursday afternoon with
  the threat of heavy rainfall continuing into the overnight
  hours. Rainfall will decrease in intensity Friday morning but
  impacts from the earlier heavier rainfall may linger into
  Friday. Rainfall amounts will generally be around 2 inches for
  Middlesex county, however locally higher amounts are possible.

* As a result of the rainfall, poor drainage and low-lying
  flooding may begin Thursday night. Small stream as well as  
  mainstem flooding is possible Thursday night into Friday. Please
  refer to the Advanced Hydrologic Prediction Service (AHPS) 
  website for the latest crest forecasts. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flood Watch means there is a potential for flooding based on
current forecasts.

You should monitor later forecasts and be alert for possible
Flood Warnings. Those living in areas prone to flooding should be
prepared to take action should flooding develop.

&&

$$

DEZ001>003-MDZ008-012-015-019-020-NJZ001-007>010-015>019-PAZ054-
055-060>062-070-071-101>106-300930-
/O.CON.KPHI.FA.A.0002.200430T1800Z-200501T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle-Kent-Inland Sussex-Cecil-Kent MD-Queen Annes-Talbot-
Caroline-Sussex-Warren-Morris-Hunterdon-Somerset-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, Dover, Georgetown, Elkton, 
Chestertown, Centreville, Easton, Denton, Newton, Washington, 
Morristown, Flemington, Somerville, Trenton, Pennsville, 
Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, 
Jim Thorpe, Stroudsburg, Reading, Allentown, Bethlehem, Media, 
Philadelphia, Honey Brook, Oxford, West Chester, Kennett Square, 
Collegeville, Pottstown, Norristown, Lansdale, Chalfont, 
Perkasie, Morrisville, and Doylestown
315 PM EDT Wed Apr 29 2020

...FLOOD WATCH REMAINS IN EFFECT FROM THURSDAY AFTERNOON THROUGH
FRIDAY AFTERNOON...

The Flood Watch continues for

* Portions of Delaware, northeast Maryland, New Jersey, and 
  Pennsylvania, including the following areas, in Delaware, 
  Inland Sussex, Kent, and New Castle. In northeast Maryland, 
  Caroline, Cecil, Kent MD, Queen Annes, and Talbot. In New 
  Jersey, Camden, Gloucester, Hunterdon, Mercer, Morris, 
  Northwestern Burlington, Salem, Somerset, Sussex, and Warren. 
  In Pennsylvania, Berks, Carbon, Delaware, Eastern Chester, 
  Eastern Montgomery, Lehigh, Lower Bucks, Monroe, Northampton, 
  Philadelphia, Upper Bucks, Western Chester, and Western 
  Montgomery. 

* From Thursday afternoon through Friday afternoon

* Periods of heavy rain will begin over western portions of the 
  area Thursday afternoon with the threat of heavy rainfall 
  progressing eastward Thursday evening into the overnight 
  hours. Rainfall will decrease in intensity Friday morning but 
  impacts from the earlier heavier rainfall may linger into the 
  day on Friday. Rainfall amounts will generally range from 1.5 
  to 2.5 inches over the watch area, however locally higher 
  amounts will be possible particularly over the higher terrain 
  of eastern PA and northwest NJ. 

* As a result of the rainfall, poor drainage and low-lying 
  flooding may begin late Thursday. Small stream as well as 
  mainstem flooding is possible Thursday night into Friday. 
  Please refer to the Advanced Hydrologic Prediction Service 
  (AHPS) website for the latest crest forecasts. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flood Watch means there is a potential for flooding based on
current forecasts.

You should monitor later forecasts and be alert for possible
Flood Warnings. Those living in areas prone to flooding should be
prepared to take action should flooding develop.

&&

$$
314 
WGUS61 KPHI 300145
FFAPHI

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Mount Holly NJ
945 PM EDT Wed Apr 29 2020

DEZ004-301000-
/O.EXA.KPHI.FA.A.0002.200430T1800Z-200501T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Delaware Beaches-
Including the city of Rehoboth Beach
945 PM EDT Wed Apr 29 2020

...FLOOD WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH FRIDAY
AFTERNOON...

The National Weather Service in Mount Holly has expanded the

* Flood Watch to include the coastal sections of Sussex County in
  southern Delaware. 

* From Thursday afternoon through Friday afternoon

* Periods of heavy rain will begin late Thursday afternoon with
  the threat of heavy rainfall continuing into the overnight
  hours. Rainfall will decrease in intensity Friday morning, but
  impacts from the earlier heavier rainfall may linger into
  Friday. Rainfall amounts will generally be around 2 inches for
  Sussex County; however, locally higher amounts are possible. 

* As a result of the rainfall, poor drainage and low-lying
  flooding may begin by Thursday evening with runoff problems
  continuing into Friday morning. Please refer to the Advanced 
  Hydrologic Prediction Service (AHPS) website for the latest 
  crest forecasts. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flood Watch means there is a potential for flooding based on
current forecasts.

You should monitor later forecasts and be alert for possible
Flood Warnings. Those living in areas prone to flooding should be
prepared to take action should flooding develop.

&&

$$

DEZ001>003-MDZ008-012-015-019-020-NJZ001-007>010-012-015>019-
PAZ054-055-060>062-070-071-101>106-301000-
/O.CON.KPHI.FA.A.0002.200430T1800Z-200501T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle-Kent-Inland Sussex-Cecil-Kent MD-Queen Annes-Talbot-
Caroline-Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex-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, Dover, Georgetown, Elkton, 
Chestertown, Centreville, Easton, Denton, Newton, Washington, 
Morristown, Flemington, Somerville, New Brunswick, Trenton, 
Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, 
Mount Holly, Jim Thorpe, Stroudsburg, Reading, Allentown, 
Bethlehem, Media, Philadelphia, Honey Brook, Oxford, 
West Chester, Kennett Square, Collegeville, Pottstown, 
Norristown, Lansdale, Chalfont, Perkasie, Morrisville, 
and Doylestown
945 PM EDT Wed Apr 29 2020

...FLOOD WATCH REMAINS IN EFFECT FROM THURSDAY AFTERNOON THROUGH
FRIDAY AFTERNOON...

The Flood Watch continues for

* Eastern and southeastern Pennsylvania, eastern Maryland,
  Delaware, and portions of New Jersey generally west of the New
  Jersey Turnpike. 

* From Thursday afternoon through Friday afternoon

* Periods of heavy rain will begin over western portions of the
  area Thursday afternoon with the threat of heavy rainfall
  progressing eastward Thursday evening into the overnight hours.
  Rainfall will decrease in intensity Friday morning, but impacts
  from the earlier heavier rainfall may linger into the day on
  Friday. Rainfall amounts will generally range from 1.5 to 3
  inches over the watch area; however, locally higher amounts will
  be possible, particularly over the higher terrain of eastern
  Pennsylvania and northwest New Jersey. 

* As a result of the rainfall, poor drainage and low-lying 
  flooding may begin late Thursday. Small stream as well as 
  main stem flooding is possible Thursday night into Friday. 
  Please refer to the Advanced Hydrologic Prediction Service 
  (AHPS) website for the latest crest forecasts. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flood Watch means there is a potential for flooding based on
current forecasts.

You should monitor later forecasts and be alert for possible
Flood Warnings. Those living in areas prone to flooding should be
prepared to take action should flooding develop.

&&

$$

CMS
155 
WGUS61 KPHI 300734
FFAPHI

Flood Watch
National Weather Service Mount Holly NJ
334 AM EDT Thu Apr 30 2020


DEZ001>004-MDZ008-012-015-019-020-NJZ001-007>010-012-015>019-
PAZ054-055-060>062-070-071-101>106-302000-
/O.CON.KPHI.FA.A.0002.200430T1800Z-200501T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle-Kent-Inland Sussex-Delaware Beaches-Cecil-Kent MD-
Queen Annes-Talbot-Caroline-Sussex-Warren-Morris-Hunterdon-
Somerset-Middlesex-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, Dover, Georgetown, 
Rehoboth Beach, Elkton, Chestertown, Centreville, Easton, Denton,
Newton, Washington, Morristown, Flemington, Somerville, 
New Brunswick, Trenton, Pennsville, Glassboro, Camden, 
Cherry Hill, Moorestown, Mount Holly, Jim Thorpe, Stroudsburg, 
Reading, Allentown, Bethlehem, Media, Philadelphia, Honey Brook, 
Oxford, West Chester, Kennett Square, Collegeville, Pottstown, 
Norristown, Lansdale, Chalfont, Perkasie, Morrisville, 
and Doylestown
334 AM EDT Thu Apr 30 2020

...FLOOD WATCH REMAINS IN EFFECT FROM 2 PM EDT THIS AFTERNOON
THROUGH FRIDAY AFTERNOON...

The Flood Watch continues for

* Portions of Delaware, northeast Maryland, New Jersey, and 
  Pennsylvania, including the following areas, in Delaware, 
  Delaware Beaches, Inland Sussex, Kent, and New Castle. In 
  northeast Maryland, Caroline, Cecil, Kent MD, Queen Annes, and 
  Talbot. In New Jersey, Camden, Gloucester, Hunterdon, Mercer, 
  Middlesex, Morris, Northwestern Burlington, Salem, Somerset, 
  Sussex, and Warren. In Pennsylvania, Berks, Carbon, Delaware, 
  Eastern Chester, Eastern Montgomery, Lehigh, Lower Bucks, 
  Monroe, Northampton, Philadelphia, Upper Bucks, Western 
  Chester, and Western Montgomery. 

* From 2 PM EDT this afternoon through Friday afternoon

* Periods of heavy rain will begin over western portions of the 
  area Thursday afternoon with the threat of heavy rainfall 
  progressing eastward Thursday evening into the overnight 
  hours. Rainfall will decrease in intensity Friday morning, but 
  impacts from the earlier heavier rainfall may linger into the 
  day on Friday. Rainfall amounts will generally range from 1.5 
  to 3 inches over the watch area; however, locally higher 
  amounts will be possible, particularly over the higher terrain 
  of eastern Pennsylvania and northwest New Jersey. 

* As a result of the rainfall, poor drainage and low-lying 
  flooding may begin late Thursday. Small stream as well as main 
  stem flooding is possible Thursday night into Friday. Please 
  refer to the Advanced Hydrologic Prediction Service (AHPS) 
  website for the latest crest forecasts. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flood Watch means there is a potential for flooding based on
current forecasts.

You should monitor later forecasts and be alert for possible
Flood Warnings. Those living in areas prone to flooding should be
prepared to take action should flooding develop.

&&

$$
203 
WGUS61 KPHI 301943
FFAPHI

Flood Watch
National Weather Service Mount Holly NJ
343 PM EDT Thu Apr 30 2020



DEZ001>004-MDZ008-012-015-019-020-NJZ001-007>010-012-015>019-
PAZ054-055-060>062-070-071-101>106-010345-
/O.CON.KPHI.FA.A.0002.000000T0000Z-200501T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle-Kent-Inland Sussex-Delaware Beaches-Cecil-Kent MD-
Queen Annes-Talbot-Caroline-Sussex-Warren-Morris-Hunterdon-
Somerset-Middlesex-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, Dover, Georgetown, 
Rehoboth Beach, Elkton, Chestertown, Centreville, Easton, Denton,
Newton, Washington, Morristown, Flemington, Somerville, 
New Brunswick, Trenton, Pennsville, Glassboro, Camden, 
Cherry Hill, Moorestown, Mount Holly, Jim Thorpe, Stroudsburg, 
Reading, Allentown, Bethlehem, Media, Philadelphia, Honey Brook, 
Oxford, West Chester, Kennett Square, Collegeville, Pottstown, 
Norristown, Lansdale, Chalfont, Perkasie, Morrisville, 
and Doylestown
343 PM EDT Thu Apr 30 2020

...FLOOD WATCH REMAINS IN EFFECT THROUGH FRIDAY AFTERNOON...

The Flood Watch continues for

* Portions of Delaware, northeast Maryland, New Jersey, and 
  Pennsylvania, including the following areas, in Delaware, 
  Delaware Beaches, Inland Sussex, Kent, and New Castle. In 
  northeast Maryland, Caroline, Cecil, Kent MD, Queen Annes, and 
  Talbot. In New Jersey, Camden, Gloucester, Hunterdon, Mercer, 
  Middlesex, Morris, Northwestern Burlington, Salem, Somerset, 
  Sussex, and Warren. In Pennsylvania, Berks, Carbon, Delaware, 
  Eastern Chester, Eastern Montgomery, Lehigh, Lower Bucks, 
  Monroe, Northampton, Philadelphia, Upper Bucks, Western 
  Chester, and Western Montgomery. 

* Through Friday afternoon

* Periods of heavy rain will move in west to east through early
  this evening and continue for several hours before the rain 
  diminishes overnight. Rainfall amounts will generally range from
  1.5 to 2.5 inches over the watch area; however, locally higher 
  amounts will be possible, particularly over the higher terrain 
  of eastern Pennsylvania and northwest New Jersey. Locally higher
  amounts could also occur if any heavier showers or embedded 
  thunderstorms train over the same area. 

* As a result of the rainfall, urban, poor drainage, and low-
  lying flooding may begin through late this afternoon into early
  this evening. Small stream as well as main stem river flooding
  is possible in places overnight into Friday. Please refer to 
  the Advanced Hydrologic Prediction Service (AHPS) website for 
  the latest crest forecasts. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flood Watch means there is a potential for flooding based on
current forecasts.

You should monitor later forecasts and be alert for possible
Flood Warnings. Those living in areas prone to flooding should be
prepared to take action should flooding develop.

&&

$$

Fitzsimmons
821 
WGUS61 KPHI 010343
FFAPHI

Flood Watch
National Weather Service Mount Holly NJ
1143 PM EDT Thu Apr 30 2020


DEZ001>004-MDZ008-012-015-019-020-NJZ001-007>010-012-015>019-
PAZ070-071-102-104-106-010445-
/O.CAN.KPHI.FA.A.0002.000000T0000Z-200501T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle-Kent-Inland Sussex-Delaware Beaches-Cecil-Kent MD-
Queen Annes-Talbot-Caroline-Sussex-Warren-Morris-Hunterdon-
Somerset-Middlesex-Mercer-Salem-Gloucester-Camden-
Northwestern Burlington-Delaware-Philadelphia-Eastern Chester-
Eastern Montgomery-Lower Bucks-
Including the cities of Wilmington, Dover, Georgetown, 
Rehoboth Beach, Elkton, Chestertown, Centreville, Easton, Denton,
Newton, Washington, Morristown, Flemington, Somerville, 
New Brunswick, Trenton, Pennsville, Glassboro, Camden, 
Cherry Hill, Moorestown, Mount Holly, Media, Philadelphia, 
West Chester, Kennett Square, Norristown, Lansdale, Morrisville, 
and Doylestown
1143 PM EDT Thu Apr 30 2020

...FLOOD WATCH IS CANCELLED...

The Flood Watch for portions of Delaware, northeast Maryland, New
Jersey, and southeast Pennsylvania has been cancelled. Heavy
rainfall has come to an end and thus the flooding threat has
diminished. Additional light rainfall will be possible tonight
into Friday.

$$

PAZ054-055-060>062-101-103-105-011145-
/O.CON.KPHI.FA.A.0002.000000T0000Z-200501T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Carbon-Monroe-Berks-Lehigh-Northampton-Western Chester-
Western Montgomery-Upper Bucks-
Including the cities of Jim Thorpe, Stroudsburg, Reading, 
Allentown, Bethlehem, Easton, Honey Brook, Oxford, Collegeville, 
Pottstown, Chalfont, and Perkasie
1143 PM EDT Thu Apr 30 2020

...FLOOD WATCH REMAINS IN EFFECT THROUGH FRIDAY AFTERNOON...

The Flood Watch continues for

* Portions of east central Pennsylvania, northeast Pennsylvania, 
  and southeast Pennsylvania, including the following areas, in 
  east central Pennsylvania, Berks, Lehigh, and Northampton. In 
  northeast Pennsylvania, Carbon and Monroe. In southeast 
  Pennsylvania, Upper Bucks, Western Chester, and Western 
  Montgomery. 

* Through Friday afternoon

* 1-2 inches of rain has fallen over the watch area this 
  afternoon/evening and periods of light rain will continue 
  overnight. The greatest flood potential overnight will be in 
  prone areas and near small streams particularly in the higher 
  elevation portions of the watch area.

* As a result of the rainfall, urban, poor drainage, and low- 
  lying flooding may begin through late this afternoon into 
  early this evening. Small stream as well as main stem river 
  flooding is possible in places overnight into Friday. Please 
  refer to the Advanced Hydrologic Prediction Service (AHPS) 
  website for the latest crest forecasts. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flood Watch means there is a potential for flooding based on
current forecasts.

You should monitor later forecasts and be alert for possible
Flood Warnings. Those living in areas prone to flooding should be
prepared to take action should flooding develop.

&&

$$
059 
WGUS61 KPHI 010731
FFAPHI

Flood Watch
National Weather Service Mount Holly NJ
331 AM EDT Fri May 1 2020


PAZ054-055-060>062-101-103-105-010845-
/O.CAN.KPHI.FA.A.0002.000000T0000Z-200501T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Carbon-Monroe-Berks-Lehigh-Northampton-Western Chester-
Western Montgomery-Upper Bucks-
Including the cities of Jim Thorpe, Stroudsburg, Reading, 
Allentown, Bethlehem, Easton, Honey Brook, Oxford, Collegeville, 
Pottstown, Chalfont, and Perkasie
331 AM EDT Fri May 1 2020

...FLOOD WATCH IS CANCELLED...

The Flood Watch for portions of east central Pennsylvania,
northeast Pennsylvania, and southeast Pennsylvania has been
cancelled. The heavy rainfall has ended and current river stage
forecasts do not indicate any flooding for the area, therefore 
the watch has been cancelled .

$$

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 29, 3:15 PM EDTWind AdvisoryPHIKent, New Castle, Sussex29 hr
Apr 29, 3:13 PM EDTGale WarningPHI33 hr

Nearby

Flood Watches in New Jersey, 2020Flood Watches in Pennsylvania, 2020Flood Watches in Maryland, 2020Every flood watch in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.