Alert archive / New Jersey / Flash Flood Watches in 2018

Flash Flood Watch 16, NWS Philadelphia/Mount Holly

October 10, 20184 states

NWS Philadelphia/Mount Holly issued this flash flood watch at Oct 10, 2018, 3:16 PM EDT for 4 states. It took effect at Oct 11, 2018, 2:00 PM EDT. It was in force for 15 hr.

The area

The counties it named.

The facts

Issued
Oct 10, 2018, 3:16 PM EDT (19:16 UTC)
In effect from
Oct 11, 2018, 2:00 PM EDT
Expired
Oct 12, 2018, 5:00 AM EDT
In force
15 hr
Issued by
NWS Philadelphia/Mount Holly
Flood severity
None
All 27 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, Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Ocean County, NJ, Salem County, NJ, Somerset County, NJ, Bucks County, PA, Chester County, PA, Delaware County, PA, Montgomery County, PA, Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 69 km from the middle of the area, began a volume at 19:17 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 7.3 hours before the alert went out and 202 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, Wallops Is Stn, VA at 12:00Z on 2018-10-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 67 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Wallops Is Stn, VA at 12:00Z on 2018-10-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 21 square meters per square second.193958Sfc1 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
67 J/kg
Mixed-layer CIN
-216 J/kg
Mixed-layer LCL
874 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
21 m²/s²
0-3 km storm-relative helicity
15 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

134 
WGUS61 KPHI 101916
FFAPHI

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Mount Holly NJ
316 PM EDT Wed Oct 10 2018

DEZ001>004-MDZ008-012-015-019-020-NJZ008>010-012>027-PAZ070-071-
101>106-110400-
/O.NEW.KPHI.FF.A.0016.181011T1800Z-181012T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle-Kent-Inland Sussex-Delaware Beaches-Cecil-Kent MD-
Queen Annes-Talbot-Caroline-Morris-Hunterdon-Somerset-Middlesex-
Western Monmouth-Eastern Monmouth-Mercer-Salem-Gloucester-Camden-
Northwestern Burlington-Ocean-Cumberland-Atlantic-Cape May-
Atlantic Coastal Cape May-Coastal Atlantic-Coastal Ocean-
Southeastern Burlington-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,
Morristown, Flemington, Somerville, New Brunswick, Freehold, 
Sandy Hook, Trenton, Pennsville, Glassboro, Camden, Cherry Hill, 
Moorestown, Mount Holly, Jackson, Millville, Hammonton, 
Cape May Court House, Ocean City, Atlantic City, 
Long Beach Island, Wharton State Forest, Media, Philadelphia, 
Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, 
Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville,
and Doylestown
316 PM EDT Wed Oct 10 2018

...FLASH FLOOD WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH
LATE THURSDAY NIGHT...

The National Weather Service in Mount Holly has issued a

* Flash Flood Watch for portions of Delaware, northeast Maryland,
  New Jersey, and southeast 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, Atlantic, Atlantic 
  Coastal Cape May, Camden, Cape May, Coastal Atlantic, Coastal 
  Ocean, Cumberland, Eastern Monmouth, Gloucester, Hunterdon, 
  Mercer, Middlesex, Morris, Northwestern Burlington, Ocean, 
  Salem, Somerset, Southeastern Burlington, and Western Monmouth. 
  In southeast Pennsylvania, Delaware, Eastern Chester, Eastern 
  Montgomery, Lower Bucks, Philadelphia, Upper Bucks, Western 
  Chester, and Western Montgomery. 

* From Thursday afternoon through late Thursday night

* Showers producing moderate to heavy rainfall will develop
  Thursday afternoon, and then will continue into early Friday
  morning. Rainfall totals of 2 to 3 inches, with locally higher 
  amounts, will fall during this time.

* The heaviest rain will fall across portions of Delmarva and the
  Coastal Plain of New Jersey. The Interstate-95 corridor is also
  susceptible to heavy rain and flash flooding. Flash flooding is
  expected on roadways and in areas of poor drainage. Minor 
  flooding along small streams and creeks is possible as well.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that there is the potential for flash 
flooding which can be life-threatening. Heavy rain is expected to 
occur over a short period of time. Rapidly rising flood waters may
quickly inundate roadways and areas of poor drainage. Streams and
creeks could leave their banks, flooding nearby properties.

Please monitor the forecast, especially if you live in a location
that is prone to flooding. Be prepared to take action if a flash 
flood warning is issued for your area.

&&

$$

MPS
8 follow-up statements
625 
WGUS61 KPHI 101921 CCA
FFAPHI

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch...CORRECTED
National Weather Service Mount Holly NJ
321 PM EDT Wed Oct 10 2018

DEZ001>004-MDZ008-012-015-019-020-NJZ008>010-012>027-PAZ070-071-
101>106-110400-
/O.COR.KPHI.FF.A.0016.181011T1800Z-181012T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle-Kent-Inland Sussex-Delaware Beaches-Cecil-Kent MD-
Queen Annes-Talbot-Caroline-Morris-Hunterdon-Somerset-Middlesex-
Western Monmouth-Eastern Monmouth-Mercer-Salem-Gloucester-Camden-
Northwestern Burlington-Ocean-Cumberland-Atlantic-Cape May-
Atlantic Coastal Cape May-Coastal Atlantic-Coastal Ocean-
Southeastern Burlington-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,
Morristown, Flemington, Somerville, New Brunswick, Freehold, 
Sandy Hook, Trenton, Pennsville, Glassboro, Camden, Cherry Hill, 
Moorestown, Mount Holly, Jackson, Millville, Hammonton, 
Cape May Court House, Ocean City, Atlantic City, 
Long Beach Island, Wharton State Forest, Media, Philadelphia, 
Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, 
Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville,
and Doylestown
321 PM EDT Wed Oct 10 2018

...FLASH FLOOD WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH
LATE THURSDAY NIGHT...

The National Weather Service in Mount Holly has issued a

* Flash Flood Watch for Delaware, Northeastern Maryland, Central
  and Southern New Jersey and far Southeastern Pennsylvania,
  including the Interstate-95 corridor. 

* From Thursday afternoon through late Thursday night

* Showers producing moderate to heavy rainfall will develop
  Thursday afternoon, and then will continue into early Friday
  morning. Rainfall totals of 2 to 3 inches, with locally higher 
  amounts, will fall during this time.

* The heaviest rain will fall across portions of Delmarva and the
  Coastal Plain of New Jersey. The Interstate-95 corridor is also
  susceptible to heavy rain and flash flooding. Flash flooding is
  expected on roadways and in areas of poor drainage. Minor 
  flooding along small streams and creeks is possible as well.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that there is the potential for flash 
flooding which can be life-threatening. Heavy rain is expected to 
occur over a short period of time. Rapidly rising flood waters may
quickly inundate roadways and areas of poor drainage. Streams and
creeks could leave their banks, flooding nearby properties.

Please monitor the forecast, especially if you live in a location
that is prone to flooding. Be prepared to take action if a flash 
flood warning is issued for your area.

&&

$$

MPS
025 
WGUS61 KPHI 110122
FFAPHI

Flood Watch
National Weather Service Mount Holly NJ
922 PM EDT Wed Oct 10 2018



DEZ001>004-MDZ008-012-015-019-020-NJZ008>010-012>027-PAZ070-071-
101>106-111330-
/O.CON.KPHI.FF.A.0016.181011T1800Z-181012T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle-Kent-Inland Sussex-Delaware Beaches-Cecil-Kent MD-
Queen Annes-Talbot-Caroline-Morris-Hunterdon-Somerset-Middlesex-
Western Monmouth-Eastern Monmouth-Mercer-Salem-Gloucester-Camden-
Northwestern Burlington-Ocean-Cumberland-Atlantic-Cape May-
Atlantic Coastal Cape May-Coastal Atlantic-Coastal Ocean-
Southeastern Burlington-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,
Morristown, Flemington, Somerville, New Brunswick, Freehold, 
Sandy Hook, Trenton, Pennsville, Glassboro, Camden, Cherry Hill, 
Moorestown, Mount Holly, Jackson, Millville, Hammonton, 
Cape May Court House, Ocean City, Atlantic City, 
Long Beach Island, Wharton State Forest, Media, Philadelphia, 
Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, 
Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville,
and Doylestown
922 PM EDT Wed Oct 10 2018

...FLASH FLOOD WATCH REMAINS IN EFFECT FROM THURSDAY AFTERNOON
THROUGH LATE THURSDAY NIGHT...

The Flash Flood Watch continues for

* Delaware, Northeastern Maryland, Central and Southern New Jersey
  and far Southeastern Pennsylvania, mostly along and southeast of
  the Interstate 95 corridor.

* From Thursday afternoon through late Thursday night

* Showers producing moderate to heavy rainfall will develop 
  Thursday afternoon, and then will continue into early Friday 
  morning. Rainfall totals of 2 to 3 inches, with locally higher 
  amounts, will fall during this time. 

* The heaviest rain will fall across portions of Delmarva and the
  Coastal Plain of New Jersey. The Interstate 95 corridor is also
  susceptible to heavy rain and flash flooding. Flash flooding is
  possible on roadways and especially in areas of poor drainage. 
  Minor flooding along small streams and creeks is possible as 
  well. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that there is the potential for flash
flooding which can be life-threatening. Heavy rain is expected to
occur over a short period of time. Rapidly rising flood waters
may quickly inundate roadways and areas of poor drainage. Streams
and creeks could leave their banks, flooding nearby properties.

Please monitor the forecast, especially if you live in a location
that is prone to flooding. Be prepared to take action if a flash
flood warning is issued for your area.

&&

$$

SFJ
929 
WGUS61 KPHI 110722
FFAPHI

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Mount Holly NJ
322 AM EDT Thu Oct 11 2018

DEZ001>004-MDZ008-012-015-019-020-NJZ008>010-012>027-PAZ070-071-
101>106-112100-
/O.EXT.KPHI.FF.A.0016.181011T1800Z-181012T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle-Kent-Inland Sussex-Delaware Beaches-Cecil-Kent MD-
Queen Annes-Talbot-Caroline-Morris-Hunterdon-Somerset-Middlesex-
Western Monmouth-Eastern Monmouth-Mercer-Salem-Gloucester-Camden-
Northwestern Burlington-Ocean-Cumberland-Atlantic-Cape May-
Atlantic Coastal Cape May-Coastal Atlantic-Coastal Ocean-
Southeastern Burlington-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,
Morristown, Flemington, Somerville, New Brunswick, Freehold, 
Sandy Hook, Trenton, Pennsville, Glassboro, Camden, Cherry Hill, 
Moorestown, Mount Holly, Jackson, Millville, Hammonton, 
Cape May Court House, Ocean City, Atlantic City, 
Long Beach Island, Wharton State Forest, Media, Philadelphia, 
Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, 
Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville,
and Doylestown
322 AM EDT Thu Oct 11 2018

...FLASH FLOOD WATCH NOW IN EFFECT FROM 2 PM EDT THIS AFTERNOON
THROUGH LATE TONIGHT...

The Flash Flood Watch is now in effect for

* Delaware, Northeastern Maryland, Central and Southern New Jersey
  and far Southeastern Pennsylvania, mostly along and southeast of
  the Interstate 95 corridor.

* From 2 PM EDT this afternoon through late tonight

* Showers will develop through today with the heaviest rainfall
  expected this afternoon through late tonight. Rainfall totals 
  of 2 to 4 inches, with locally higher amounts, will fall during 
  this time.
 
* The heaviest rain will fall across portions of Delmarva and 
  the Coastal Plain of New Jersey. The Interstate 95 corridor is 
  also susceptible to heavy rain and flash flooding. Flash 
  flooding is possible on roadways and especially in areas of 
  poor drainage. Minor flooding along small streams and creeks 
  is possible as well. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that there is the potential for flash
flooding which can be life-threatening. Heavy rain is expected to
occur over a short period of time. Rapidly rising flood waters
may quickly inundate roadways and areas of poor drainage. Streams
and creeks could leave their banks, flooding nearby properties.

Please monitor the forecast, especially if you live in a location
that is prone to flooding. Be prepared to take action if a flash
flood warning is issued for your area.

&&

$$

Meola
929 
WGUS61 KPHI 111539
FFAPHI

Flood Watch
National Weather Service Mount Holly NJ
1139 AM EDT Thu Oct 11 2018

DEZ001>004-MDZ008-012-015-019-020-NJZ008>010-012>027-PAZ070-071-
101>106-120000-
/O.CON.KPHI.FF.A.0016.181011T1800Z-181012T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle-Kent-Inland Sussex-Delaware Beaches-Cecil-Kent MD-
Queen Annes-Talbot-Caroline-Morris-Hunterdon-Somerset-Middlesex-
Western Monmouth-Eastern Monmouth-Mercer-Salem-Gloucester-Camden-
Northwestern Burlington-Ocean-Cumberland-Atlantic-Cape May-
Atlantic Coastal Cape May-Coastal Atlantic-Coastal Ocean-
Southeastern Burlington-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,
Morristown, Flemington, Somerville, New Brunswick, Freehold, 
Sandy Hook, Trenton, Pennsville, Glassboro, Camden, Cherry Hill, 
Moorestown, Mount Holly, Jackson, Millville, Hammonton, 
Cape May Court House, Ocean City, Atlantic City, 
Long Beach Island, Wharton State Forest, Media, Philadelphia, 
Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, 
Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville,
and Doylestown
1139 AM EDT Thu Oct 11 2018

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT...

The Flash Flood Watch continues for

* Delaware, Northeastern Maryland, Central and Southern New Jersey
  and far Southeastern Pennsylvania, mainly along and southeast 
  of the Interstate 95 corridor.

* Through late tonight

* Showers will continue to develop with the heaviest rainfall 
  expected this afternoon through late tonight. Rainfall totals of
  2 to 4 inches, with locally higher amounts, will fall during 
  this time. 

* The heaviest rain will fall across portions of Delmarva and 
  the Coastal Plain of New Jersey. The Interstate 95 corridor is 
  also susceptible to heavy rain and flash flooding. Flash 
  flooding is possible on roadways and especially in areas of 
  poor drainage. Minor flooding along small streams and creeks 
  is possible as well. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that there is the potential for flash
flooding which can be life-threatening. Heavy rain is expected to
occur over a short period of time. Rapidly rising flood waters
may quickly inundate roadways and areas of poor drainage. Streams
and creeks could leave their banks, flooding nearby properties.

Please monitor the forecast, especially if you live in a location
that is prone to flooding. Be prepared to take action if a flash
flood warning is issued for your area.

&&

$$

MPS
775 
WGUS61 KPHI 111916
FFAPHI

Flood Watch
National Weather Service Mount Holly NJ
316 PM EDT Thu Oct 11 2018

DEZ001>004-MDZ008-012-015-019-020-NJZ008>010-012>027-PAZ070-071-
101>106-120400-
/O.CON.KPHI.FF.A.0016.000000T0000Z-181012T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle-Kent-Inland Sussex-Delaware Beaches-Cecil-Kent MD-
Queen Annes-Talbot-Caroline-Morris-Hunterdon-Somerset-Middlesex-
Western Monmouth-Eastern Monmouth-Mercer-Salem-Gloucester-Camden-
Northwestern Burlington-Ocean-Cumberland-Atlantic-Cape May-
Atlantic Coastal Cape May-Coastal Atlantic-Coastal Ocean-
Southeastern Burlington-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,
Morristown, Flemington, Somerville, New Brunswick, Freehold, 
Sandy Hook, Trenton, Pennsville, Glassboro, Camden, Cherry Hill, 
Moorestown, Mount Holly, Jackson, Millville, Hammonton, 
Cape May Court House, Ocean City, Atlantic City, 
Long Beach Island, Wharton State Forest, Media, Philadelphia, 
Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, 
Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville,
and Doylestown
316 PM EDT Thu Oct 11 2018

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT...

The Flash Flood Watch continues for

* Delaware, Northeastern Maryland, Central and Southern New Jersey
  and far Southeastern Pennsylvania, mainly along and southeast of
  the Interstate 95 corridor.

* Through late tonight

* Showers will continue to develop with the heaviest rainfall
  expected this evening through late tonight. Rainfall totals of 
  2 to 4 inches, with locally higher amounts, will fall during 
  this time. 

* The heaviest rain will fall across portions of Delmarva and 
  the Coastal Plain of New Jersey. The Interstate 95 corridor is 
  also susceptible to heavy rain and flash flooding. Flash 
  flooding is possible on roadways and especially in areas of 
  poor drainage. Minor flooding along small streams and creeks 
  is possible as well. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that there is the potential for flash
flooding which can be life-threatening. Heavy rain is expected to
occur over a short period of time. Rapidly rising flood waters
may quickly inundate roadways and areas of poor drainage. Streams
and creeks could leave their banks, flooding nearby properties.

Please monitor the forecast, especially if you live in a location
that is prone to flooding. Be prepared to take action if a flash
flood warning is issued for your area.

&&

$$

MPS
228 
WGUS61 KPHI 120348
FFAPHI

Flood Watch
National Weather Service Mount Holly NJ
1148 PM EDT Thu Oct 11 2018

DEZ001>004-MDZ008-012-015-019-020-NJZ008>010-012>027-PAZ070-071-
101>106-120900-
/O.CON.KPHI.FF.A.0016.000000T0000Z-181012T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle-Kent-Inland Sussex-Delaware Beaches-Cecil-Kent MD-
Queen Annes-Talbot-Caroline-Morris-Hunterdon-Somerset-Middlesex-
Western Monmouth-Eastern Monmouth-Mercer-Salem-Gloucester-Camden-
Northwestern Burlington-Ocean-Cumberland-Atlantic-Cape May-
Atlantic Coastal Cape May-Coastal Atlantic-Coastal Ocean-
Southeastern Burlington-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,
Morristown, Flemington, Somerville, New Brunswick, Freehold, 
Sandy Hook, Trenton, Pennsville, Glassboro, Camden, Cherry Hill, 
Moorestown, Mount Holly, Jackson, Millville, Hammonton, 
Cape May Court House, Ocean City, Atlantic City, 
Long Beach Island, Wharton State Forest, Media, Philadelphia, 
Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, 
Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville,
and Doylestown
1148 PM EDT Thu Oct 11 2018

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

The Flash Flood Watch continues for

* Portions of Delaware, northeast Maryland, New Jersey, and 
  southeast 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, Atlantic, Atlantic Coastal 
  Cape May, Camden, Cape May, Coastal Atlantic, Coastal Ocean, 
  Cumberland, Eastern Monmouth, Gloucester, Hunterdon, Mercer, 
  Middlesex, Morris, Northwestern Burlington, Ocean, Salem, 
  Somerset, Southeastern Burlington, and Western Monmouth. In 
  southeast Pennsylvania, Delaware, Eastern Chester, Eastern 
  Montgomery, Lower Bucks, Philadelphia, Upper Bucks, Western 
  Chester, and Western Montgomery. 

* Until 5 AM EDT Friday

* Showers and thunderstorms will continue to affect the area
  through the overnight. Rainfall totals of 2 to 4 inches, with 
  locally higher amounts, will fall during this time.
 
* The heaviest rain will fall across portions of Delmarva and 
  the Coastal Plain of New Jersey. The Interstate 95 corridor is 
  also susceptible to heavy rain and flash flooding. Flash 
  flooding is possible on roadways and especially in areas of 
  poor drainage. Minor flooding along small streams and creeks 
  is possible as well. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that there is the potential for flash
flooding which can be life-threatening. Heavy rain is expected to
occur over a short period of time. Rapidly rising flood waters
may quickly inundate roadways and areas of poor drainage. Streams
and creeks could leave their banks, flooding nearby properties.

Please monitor the forecast, especially if you live in a location
that is prone to flooding. Be prepared to take action if a flash
flood warning is issued for your area.

&&

$$
193 
WGUS61 KPHI 120648
FFAPHI

Flood Watch
National Weather Service Mount Holly NJ
248 AM EDT Fri Oct 12 2018

NJZ008>010-012-015-PAZ070-071-101>106-120800-
/O.CAN.KPHI.FF.A.0016.000000T0000Z-181012T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Morris-Hunterdon-Somerset-Middlesex-Mercer-Delaware-Philadelphia-
Western Chester-Eastern Chester-Western Montgomery-
Eastern Montgomery-Upper Bucks-Lower Bucks-
Including the cities of Morristown, Flemington, Somerville, 
New Brunswick, Trenton, Media, Philadelphia, Honey Brook, Oxford,
West Chester, Kennett Square, Collegeville, Pottstown, 
Norristown, Lansdale, Chalfont, Perkasie, Morrisville, 
and Doylestown
248 AM EDT Fri Oct 12 2018

...FLASH FLOOD WATCH IS CANCELLED...

The Flash Flood Watch for portions of New Jersey and southeast
Pennsylvania has been cancelled. 

The heavy rainfall is tapering off, therefore the threat for flash
flooding has ended. Be alert for any ponding on roadways from
earlier rainfall and any continuing rain.

$$

DEZ001>004-MDZ008-012-015-019-020-NJZ013-014-016>027-120900-
/O.CON.KPHI.FF.A.0016.000000T0000Z-181012T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle-Kent-Inland Sussex-Delaware Beaches-Cecil-Kent MD-
Queen Annes-Talbot-Caroline-Western Monmouth-Eastern Monmouth-
Salem-Gloucester-Camden-Northwestern Burlington-Ocean-Cumberland-
Atlantic-Cape May-Atlantic Coastal Cape May-Coastal Atlantic-
Coastal Ocean-Southeastern Burlington-
Including the cities of Wilmington, Dover, Georgetown, 
Rehoboth Beach, Elkton, Chestertown, Centreville, Easton, Denton,
Freehold, Sandy Hook, Pennsville, Glassboro, Camden, Cherry Hill,
Moorestown, Mount Holly, Jackson, Millville, Hammonton, 
Cape May Court House, Ocean City, Atlantic City, 
Long Beach Island, and Wharton State Forest
248 AM EDT Fri Oct 12 2018

...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 5 AM EDT EARLY THIS
MORNING...

The Flash Flood Watch continues for

* Portions of Delaware, northeast Maryland, and New Jersey, 
  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, Atlantic, Atlantic Coastal Cape May, Camden, Cape May, 
  Coastal Atlantic, Coastal Ocean, Cumberland, Eastern Monmouth, 
  Gloucester, Northwestern Burlington, Ocean, Salem, 
  Southeastern Burlington, and Western Monmouth. 

* Until 5 AM EDT early this morning

* Moderate to heavy rain will continue to affect the area through
  the morning hours. Rainfall totals of 2 to 4 inches, with 
  locally higher amounts, will fall during this time. 

* The heaviest rain will fall across portions of Delmarva and the
  Coastal Plain of New Jersey. Flash flooding is possible on 
  roadways and especially in areas of poor drainage. Minor 
  flooding along small streams and creeks is possible as well. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that there is the potential for flash
flooding which can be life-threatening. Heavy rain is expected to
occur over a short period of time. Rapidly rising flood waters
may quickly inundate roadways and areas of poor drainage. Streams
and creeks could leave their banks, flooding nearby properties.

Please monitor the forecast, especially if you live in a location
that is prone to flooding. Be prepared to take action if a flash
flood warning is issued for your area.

&&

$$
667 
WGUS61 KPHI 120856
FFAPHI

Flood Watch
National Weather Service Mount Holly NJ
456 AM EDT Fri Oct 12 2018

DEZ001>004-MDZ008-012-015-019-020-NJZ013-014-016>027-121000-
/O.EXP.KPHI.FF.A.0016.000000T0000Z-181012T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle-Kent-Inland Sussex-Delaware Beaches-Cecil-Kent MD-
Queen Annes-Talbot-Caroline-Western Monmouth-Eastern Monmouth-
Salem-Gloucester-Camden-Northwestern Burlington-Ocean-Cumberland-
Atlantic-Cape May-Atlantic Coastal Cape May-Coastal Atlantic-
Coastal Ocean-Southeastern Burlington-
Including the cities of Wilmington, Dover, Georgetown, 
Rehoboth Beach, Elkton, Chestertown, Centreville, Easton, Denton,
Freehold, Sandy Hook, Pennsville, Glassboro, Camden, Cherry Hill,
Moorestown, Mount Holly, Jackson, Millville, Hammonton, 
Cape May Court House, Ocean City, Atlantic City, 
Long Beach Island, and Wharton State Forest
456 AM EDT Fri Oct 12 2018

...FLASH FLOOD WATCH WILL EXPIRE AT 5 AM EDT EARLY THIS MORNING...

The Flash Flood Watch for portions of Delaware, northeast
Maryland, and New Jersey will expire at 5 AM EDT early this
morning. 

The heavy rainfall associated with a cold front and now post-
tropical storm Michael, is tapering off and moving offshore. 
The threat for Flash Flooding has ended, therefore the watch will
be allowed to expire. Some areas saw 3 to 5 inches of rain from
these systems and some roadways may still be impacted. Please
remain cautious and alert if driving this morning and follow any
posted detours. 

$$

Meola

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 10, 2:59 AM EDTDense Fog AdvisoryPHIAtlantic, Burlington, Camden, Cumberland, Gloucester, Mercer and 5 more6 hr
Oct 10, 6:16 AM EDTMarine Dense Fog AdvisoryPHI3 hr
Oct 10, 3:33 PM EDTGale WatchPHI12 hr
Oct 10, 3:33 PM EDTSmall Craft AdvisoryPHI12 hr

Nearby

Flash Flood Watches in New Jersey, 2018Flash Flood Watches in Pennsylvania, 2018Flash Flood Watches in Maryland, 2018Every flash flood watch in 2018

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; radar from the NEXRAD Level II archive.