Alert archive / New Jersey / Flood Watches in 2023
Flood Watch 4, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flood watch at Jun 27, 2023, 3:48 AM EDT for 10 counties in Pennsylvania; 11 counties in New Jersey; New Castle County, Delaware. It took effect at Jun 27, 2023, 12:00 PM EDT. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- Jun 27, 2023, 3:48 AM EDT (07:48 UTC)
- In effect from
- Jun 27, 2023, 12:00 PM EDT
- Expired
- Jun 27, 2023, 9:09 PM EDT
- In force
- 9 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Flood severity
- None
All 22 counties
New Castle County, DE, Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris 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 radar
The Philadelphia radar (KDIX), 75 km from the middle of the area, began a volume at 07:48 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
Brookhaven, NY (KOKX), launched 00:00Z, 7.8 hours before the alert went out and 196 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.
- Mixed-layer CAPE
- 482 J/kg
- Mixed-layer CIN
- -74 J/kg
- Mixed-layer LCL
- 987 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 134 m²/s²
- 0-3 km storm-relative helicity
- 127 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.3
The text
As transmitted.
193
WGUS61 KPHI 270748
FFAPHI
URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Mount Holly NJ
348 AM EDT Tue Jun 27 2023
NJZ001-007>010-PAZ061-062-272000-
/O.CAN.KPHI.FA.A.0003.230702T1600Z-230703T0400Z/
/O.NEW.KPHI.FA.A.0004.230627T1600Z-230628T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sussex-Warren-Morris-Hunterdon-Somerset-Lehigh-Northampton-
Including the cities of Flemington, Allentown, Easton, Morristown,
Washington, Bethlehem, Somerville, and Newton
348 AM EDT Tue Jun 27 2023
...FLOOD WATCH IN EFFECT FROM NOON EDT TODAY THROUGH THIS EVENING...
* WHAT...Flooding caused by excessive rainfall is possible.
* WHERE...Portions of New Jersey...and east central Pennsylvania...
including the following counties...in New Jersey...Hunterdon,
Morris, Somerset, Sussex, and Warren. In east central
Pennsylvania...Lehigh and Northampton.
* WHEN...From Noon EDT today through this evening.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Creeks and streams may rise out of their banks. Flooding may occur
in poor drainage and urban areas. Low-water crossings may be
flooded. Area creeks and streams are running high and could flood
with more heavy rain.
* ADDITIONAL DETAILS...
- Scattered showers and thunderstorms with locally heavy rain
and expected across the watch area this afternoon and
evening. Widespread rainfall amounts of 2-4 inches occurred
on Monday, saturating the ground. Rainfall amounts of 1-2
inches with localized amounts near 3 inches will be possible
with the showers and thunderstorms today. These totals may
result in additional flash flooding.
- http://www.weather.gov/safety/flood
The Flood Watch is cancelled for portions of New Jersey...and east
central Pennsylvania...including the following counties...in New
Jersey...Hunterdon, Morris, Somerset, Sussex, and Warren. In east
central Pennsylvania...Lehigh and Northampton.
$$
DEZ001-NJZ012-015-PAZ054-055-060-070-071-101>106-272000-
/O.CAN.KPHI.FA.A.0003.230702T1600Z-230703T0400Z/
/O.NEW.KPHI.FA.A.0004.230627T1600Z-230628T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle-Middlesex-Mercer-Carbon-Monroe-Berks-Delaware-
Philadelphia-Western Chester-Eastern Chester-Western Montgomery-
Eastern Montgomery-Upper Bucks-Lower Bucks-
Including the cities of Philadelphia, Kennett Square, Lansdale,
Norristown, Reading, Media, Collegeville, Chalfont, Perkasie,
Morrisville, Doylestown, Trenton, Stroudsburg, Jim Thorpe, New
Brunswick, Oxford, Wilmington, Pottstown, West Chester, and Honey
Brook
348 AM EDT Tue Jun 27 2023
...FLOOD WATCH IN EFFECT FROM NOON EDT TODAY THROUGH THIS EVENING...
* WHAT...Flooding caused by excessive rainfall is possible.
* WHERE...Portions of northern Delaware...New Jersey...and
Pennsylvania...including the following areas...in northern
Delaware...New Castle. In New Jersey...Mercer and Middlesex. In
Pennsylvania...Berks, Carbon, Delaware, Eastern Chester, Eastern
Montgomery, Lower Bucks, Monroe, Philadelphia, Upper Bucks,
Western Chester, and Western Montgomery.
* WHEN...From Noon EDT today through this evening.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Creeks and streams may rise out of their banks. Flooding may occur
in poor drainage and urban areas. Low-water crossings may be
flooded.
* ADDITIONAL DETAILS...
- Scattered showers and thunderstorms with locally heavy rain
and expected across the watch area this afternoon and
evening. Widespread rainfall amounts near 1 inch with locally
higher amounts near 3 inches occurred on Monday, saturating
the ground. Rainfall amounts of 1-2 inches with localized
amounts near 3 inches will be possible with the showers and
thunderstorms today. These totals may result in additional
flash flooding.
- http://www.weather.gov/safety/flood
The Flood Watch is cancelled for portions of northern Delaware...New
Jersey...and Pennsylvania...including the following areas...in
northern Delaware...New Castle. In New Jersey...Mercer and
Middlesex. In Pennsylvania...Berks, Carbon, Delaware, Eastern
Chester, Eastern Montgomery, Lower Bucks, Monroe, Philadelphia,
Upper Bucks, Western Chester, and Western Montgomery.
$$
Staarmann2 follow-up statements
327
WGUS61 KPHI 271815
FFAPHI
URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Mount Holly NJ
215 PM EDT Tue Jun 27 2023
NJZ013-017>019-280400-
/O.EXA.KPHI.FA.A.0004.000000T0000Z-230628T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Western Monmouth-Gloucester-Camden-Northwestern Burlington-
Including the cities of Moorestown, Mount Holly, Camden, Glassboro,
Cherry Hill, and Freehold
215 PM EDT Tue Jun 27 2023
...FLOOD WATCH IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...
* WHAT...Flooding caused by excessive rainfall is possible.
* WHERE...Portions of central New Jersey...and southern New Jersey...
including the following areas...in central New Jersey...Western
Monmouth. In southern New Jersey...Camden, Gloucester, and
Northwestern Burlington.
* WHEN...Until Midnight EDT tonight.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
* ADDITIONAL DETAILS...
- Scattered showers and thunderstorms with locally heavy rain
are expected across the watch area this afternoon and
evening. Rainfall amounts of 1-2 inches with localized
amounts near 3 inches will be possible.
- http://www.weather.gov/safety/flood
$$
NJZ001-007>010-PAZ061-062-280400-
/O.CON.KPHI.FA.A.0004.000000T0000Z-230628T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sussex-Warren-Morris-Hunterdon-Somerset-Lehigh-Northampton-
Including the cities of Flemington, Somerville, Easton, Allentown,
Washington, Newton, Morristown, and Bethlehem
215 PM EDT Tue Jun 27 2023
...FLOOD WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...
* WHAT...Flooding caused by excessive rainfall continues to be
possible.
* WHERE...Portions of New Jersey...and east central Pennsylvania...
including the following counties...in New Jersey...Hunterdon,
Morris, Somerset, Sussex, and Warren. In east central
Pennsylvania...Lehigh and Northampton.
* WHEN...Until Midnight EDT tonight.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Creeks and streams may rise out of their banks. Flooding may occur
in poor drainage and urban areas. Low-water crossings may be
flooded. Area creeks and streams are running high and could flood
with more heavy rain.
* ADDITIONAL DETAILS...
- Scattered showers and thunderstorms with locally heavy rain
are expected across the watch area this afternoon and
evening. Widespread rainfall amounts of 2-4 inches occurred
on Monday, saturating the ground. Rainfall amounts of 1-2
inches with localized amounts near 3 inches will be possible
with the showers and thunderstorms today. These totals may
result in additional flash flooding.
- http://www.weather.gov/safety/flood
$$
DEZ001-NJZ012-015-PAZ054-055-060-070-071-101>106-280400-
/O.CON.KPHI.FA.A.0004.000000T0000Z-230628T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle-Middlesex-Mercer-Carbon-Monroe-Berks-Delaware-
Philadelphia-Western Chester-Eastern Chester-Western Montgomery-
Eastern Montgomery-Upper Bucks-Lower Bucks-
Including the cities of Philadelphia, Trenton, Collegeville, Oxford,
New Brunswick, Media, Pottstown, Stroudsburg, Reading, Jim Thorpe,
Wilmington, Honey Brook, West Chester, Kennett Square, Chalfont,
Perkasie, Norristown, Lansdale, Morrisville, and Doylestown
215 PM EDT Tue Jun 27 2023
...FLOOD WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...
* WHAT...Flooding caused by excessive rainfall continues to be
possible.
* WHERE...Portions of northern Delaware...New Jersey...and
Pennsylvania...including the following areas...in northern
Delaware...New Castle. In New Jersey...Mercer and Middlesex. In
Pennsylvania...Berks, Carbon, Delaware, Eastern Chester, Eastern
Montgomery, Lower Bucks, Monroe, Philadelphia, Upper Bucks,
Western Chester, and Western Montgomery.
* WHEN...Until Midnight EDT tonight.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Creeks and streams may rise out of their banks. Flooding may occur
in poor drainage and urban areas. Low-water crossings may be
flooded.
* ADDITIONAL DETAILS...
- Scattered showers and thunderstorms with locally heavy rain
are expected across the watch area this afternoon and
evening. Widespread rainfall amounts near 1 inch with locally
higher amounts near 3 inches occurred on Monday, saturating
the ground. Rainfall amounts of 1-2 inches with localized
amounts near 3 inches will be possible with the showers and
thunderstorms today. These totals may result in additional
flash flooding.
- http://www.weather.gov/safety/flood
$$
Kruzdlo554 WGUS61 KPHI 280109 FFAPHI Flood Watch National Weather Service Mount Holly NJ 909 PM EDT Tue Jun 27 2023 DEZ001-NJZ001-007>010-012-013-015-017>019-PAZ054-055-060>062-070-071- 101>106-280215- /O.CAN.KPHI.FA.A.0004.000000T0000Z-230628T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ New Castle-Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex-Western Monmouth-Mercer-Gloucester-Camden-Northwestern Burlington-Carbon- Monroe-Berks-Lehigh-Northampton-Delaware-Philadelphia-Western Chester-Eastern Chester-Western Montgomery-Eastern Montgomery-Upper Bucks-Lower Bucks- Including the cities of Reading, Camden, Bethlehem, Easton, Mount Holly, Lansdale, West Chester, Philadelphia, Jim Thorpe, Wilmington, Allentown, Kennett Square, Moorestown, Collegeville, Glassboro, Pottstown, Somerville, Honey Brook, Morristown, Freehold, Cherry Hill, New Brunswick, Washington, Flemington, Chalfont, Doylestown, Newton, Oxford, Perkasie, Norristown, Media, Trenton, Morrisville, and Stroudsburg 909 PM EDT Tue Jun 27 2023 ...FLOOD WATCH IS CANCELLED... The Flood Watch is cancelled for portions of northern Delaware...New Jersey...and Pennsylvania...including the following areas...in northern Delaware...New Castle. In New Jersey...Camden, Gloucester, Hunterdon, Mercer, Middlesex, Morris, Northwestern Burlington, Somerset, Sussex, Warren, and Western Monmouth. In Pennsylvania... Berks, Carbon, Delaware, Eastern Chester, Eastern Montgomery, Lehigh, Lower Bucks, Monroe, Northampton, Philadelphia, Upper Bucks, Western Chester, and Western Montgomery. Flooding is no longer expected to pose a threat. Please continue to heed remaining road closures. $$ PO
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 26, 8:27 PM EDT | Special Weather Statement | PHI | Chester | 33 min |
| Jun 26, 8:33 PM EDT | Special Weather Statement | PHI | Philadelphia | 27 min |
| Jun 26, 8:36 PM EDT | Special Weather Statement | PHI | Bucks | 24 min |
| Jun 26, 8:40 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 31 min |
| Jun 26, 8:42 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 48 min |
| Jun 26, 9:18 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 42 min |
| Jun 26, 9:30 PM EDT | Flash Flood Warning | PHI | Monroe, Northampton | 3 hr |
| Jun 26, 9:47 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Montgomery | 43 min |
| Jun 26, 9:51 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware, Philadelphia | 54 min |
| Jun 26, 9:58 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 47 min |
| Jun 26, 10:33 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 42 min |
| Jun 26, 10:54 PM EDT | Areal Flood Advisory | PHI | Berks, Chester, Delaware, Montgomery, Philadelphia | 3 hr |
| Jun 26, 11:07 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Philadelphia | 53 min |
| Jun 26, 11:27 PM EDT | Areal Flood Advisory | PHI | Bucks, Montgomery, Philadelphia | 3 hr |
| Jun 26, 11:35 PM EDT | Flash Flood Warning | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 6 hr |
| Jun 27, 12:00 AM EDT | Areal Flood Warning | PHI | Bucks, Lehigh, Monroe, Northampton | 7 hr |
| Jun 27, 12:51 AM EDT | Flash Flood Warning | PHI | Chester, Montgomery | 4 hr |
| Jun 27, 1:23 AM EDT | Special Weather Statement | PHI | Montgomery | 37 min |
| Jun 27, 2:23 AM EDT | River Flood Warning | PHI | Chester | 6 hr |
| Jun 27, 2:29 AM EDT | Special Weather Statement | PHI | Delaware | 31 min |
| Jun 27, 3:01 AM EDT | Special Weather Statement | PHI | Delaware, Montgomery, Philadelphia | 29 min |
| Jun 27, 3:02 AM EDT | Flood Watch | PHI | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 46 min |
| Jun 27, 3:26 AM EDT | River Flood Warning | PHI | Delaware | 4 hr |
| Jun 27, 3:54 AM EDT | River Flood Warning | PHI | Chester, Delaware | 5 hr |
| Jun 27, 6:14 AM EDT | Areal Flood Warning | PHI | Montgomery, Philadelphia | 3 hr |
| Jun 27, 6:16 AM EDT | Areal Flood Warning | PHI | Chester, Delaware | 3 hr |
| Jun 27, 10:08 AM EDT | River Flood Warning | PHI | Chester, Delaware | 109 min |
| Jun 27, 12:45 PM EDT | Special Weather Statement | PHI | Berks | 30 min |
| Jun 27, 2:13 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 47 min |
| Jun 27, 2:18 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 22 min |
| Jun 27, 2:21 PM EDT | Special Weather Statement | PHI | Berks | 24 min |
| Jun 27, 2:42 PM EDT | Areal Flood Advisory | PHI | Berks | 3 hr |
| Jun 27, 2:57 PM EDT | Areal Flood Advisory | PHI | Chester | 3 hr |
| Jun 27, 3:07 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 38 min |
| Jun 27, 3:25 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 19 min |
| Jun 27, 3:33 PM EDT | Special Weather Statement | PHI | Delaware | 27 min |
| Jun 27, 3:57 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 48 min |
| Jun 27, 4:06 PM EDT | Special Weather Statement | PHI | Northampton | 24 min |
| Jun 27, 4:24 PM EDT | Areal Flood Advisory | PHI | Northampton | 3 hr |
| Jun 27, 4:30 PM EDT | Severe Thunderstorm Warning | PHI | Montgomery, Philadelphia | 32 min |
| Jun 27, 4:33 PM EDT | Severe Thunderstorm Warning | PHI | Monroe, Northampton | 42 min |
| Jun 27, 4:39 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery, Philadelphia | 51 min |
| Jun 27, 4:58 PM EDT | Areal Flood Advisory | PHI | Bucks, Montgomery, Philadelphia | 3 hr |
| Jun 27, 5:01 PM EDT | Severe Thunderstorm Warning | PHI | Northampton | 44 min |
| Jun 27, 5:22 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Philadelphia | 38 min |
| Jun 27, 5:43 PM EDT | Special Weather Statement | PHI | Monroe, Northampton | 32 min |
| Jun 27, 5:44 PM EDT | Flash Flood Warning | PHI | Bucks, Montgomery, Philadelphia | 5 hr |
| Jun 27, 5:52 PM EDT | Areal Flood Advisory | PHI | Northampton | 3 hr |
| Jun 27, 5:57 PM EDT | Areal Flood Advisory | PHI | Bucks, Delaware, Philadelphia | 3 hr |
| Jun 27, 6:15 PM EDT | Special Weather Statement | PHI | Northampton | 45 min |
| Jun 26, 8:56 PM EDT | Areal Flood Advisory | PHI | Sussex | 38 min |
| Jun 26, 8:56 PM EDT | Special Weather Statement | PHI | Warren | 34 min |
| Jun 26, 9:21 PM EDT | Special Weather Statement | PHI | Mercer | 24 min |
| Jun 26, 9:31 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Middlesex, Somerset | 44 min |
| Jun 26, 9:34 PM EDT | Flash Flood Warning | PHI | Sussex | 2 hr |
| Jun 26, 9:46 PM EDT | Special Marine Warning | PHI | 59 min | |
| Jun 26, 10:07 PM EDT | Special Weather Statement | PHI | Middlesex, Morris | 23 min |
| Jun 26, 10:26 PM EDT | Severe Thunderstorm Warning | PHI | Morris | 16 min |
| Jun 26, 10:41 PM EDT | Areal Flood Advisory | PHI | Sussex, Warren | 84 min |
| Jun 26, 11:42 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Middlesex, Somerset | 33 min |
| Jun 27, 12:12 AM EDT | Special Weather Statement | PHI | Monmouth | 33 min |
| Jun 27, 12:16 AM EDT | Special Marine Warning | PHI | 44 min | |
| Jun 27, 1:26 AM EDT | Special Marine Warning | PHI | 49 min | |
| Jun 27, 2:00 AM EDT | Special Marine Warning | PHI | 45 min | |
| Jun 27, 4:04 AM EDT | River Flood Warning | PHI | Morris | 22 hr |
| Jun 27, 11:16 AM EDT | Areal Flood Advisory | PHI | Morris, Sussex | 3 hr |
| Jun 27, 11:42 AM EDT | Areal Flood Advisory | PHI | Monmouth | 2 hr |
| Jun 27, 3:05 PM EDT | Severe Thunderstorm Warning | PHI | Cumberland, Salem | 40 min |
| Jun 27, 3:06 PM EDT | Special Marine Warning | PHI | 54 min | |
| Jun 27, 3:32 PM EDT | Areal Flood Advisory | PHI | Cumberland, Salem | 3 hr |
| Jun 27, 3:38 PM EDT | Severe Thunderstorm Warning | PHI | Cumberland, Salem | 52 min |
| Jun 27, 3:41 PM EDT | Severe Thunderstorm Warning | PHI | Salem | 22 min |
| Jun 27, 3:52 PM EDT | Special Marine Warning | PHI | 53 min | |
| Jun 27, 4:21 PM EDT | Severe Thunderstorm Warning | PHI | Cumberland, Salem | 39 min |
| Jun 27, 4:36 PM EDT | Severe Thunderstorm Warning | PHI | Cumberland, Salem | 26 min |
| Jun 27, 5:05 PM EDT | Special Marine Warning | PHI | 25 min | |
| Jun 27, 5:17 PM EDT | Flash Flood Warning | PHI | Salem | 4 hr |
| Jun 27, 5:23 PM EDT | Severe Thunderstorm Warning | PHI | Cumberland, Gloucester, Salem | 32 min |
| Jun 27, 5:40 PM EDT | Special Weather Statement | PHI | Hunterdon, Somerset | 35 min |
| Jun 27, 5:45 PM EDT | Special Weather Statement | PHI | Warren | 45 min |
Nearby
Flood Watches in New Jersey, 2023Flood Watches in Pennsylvania, 2023Flood Watches in Delaware, 2023Every flood watch in 2023
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.