Alert archive / New Jersey / Flash Flood Warnings in 2023
Flash Flood Warning 66, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 16, 2023, 11:08 AM EDT for New Castle County, Delaware; Gloucester County, Salem County, New Jersey; Delaware County, Philadelphia County, Pennsylvania. It was in force for 3 hr. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 16, 2023, 11:08 AM EDT (15:08 UTC)
- Expired
- Jul 16, 2023, 1:47 PM EDT
- In force
- 3 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties New Castle County, DE, Gloucester County, NJ, Salem County, NJ, Delaware County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 91 km from the middle of the area, began a volume at 15:12 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 16, 1:09 PM EDT | FLOOD | 1 Sw Eastwick, PA | Flooding on I-95 southbound between Exit 14 - Bartram Ave/Essington Ave and Exit: PA 291 CARGO CITY / PHILADELPHIA INTL AIRPORT { # 12A/12B }. There is a lane restriction. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 3.1 hours before the alert went out and 190 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
- 275 J/kg
- Mixed-layer CIN
- -48 J/kg
- Mixed-layer LCL
- 570 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 97 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
614
WGUS51 KPHI 161508
FFWPHI
DEC003-NJC015-033-PAC045-101-161800-
/O.NEW.KPHI.FF.W.0066.230716T1508Z-230716T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
1108 AM EDT Sun Jul 16 2023
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
Northeastern New Castle County in northern Delaware...
Northwestern Gloucester County in southern New Jersey...
Northwestern Salem County in southern New Jersey...
Southeastern Delaware County in southeastern Pennsylvania...
Southwestern Philadelphia County in southeastern Pennsylvania...
* Until 200 PM EDT.
* At 1108 AM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 2 inches of rain
have fallen. Additional rainfall amounts of 1 to 2 inches are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets, and underpasses as well as other
drainage and low lying areas.
* Some locations that may experience flash flooding include...
Philadelphia, Wilmington, Chester, West Deptford, Pennsville,
Woodbury, Carneys Point, Folcroft, Elsmere, Paulsboro, New Castle,
and Penns Grove.
This includes the following highways...
Interstate 95 in Pennsylvania between mile markers 0 and 18.
Interstate 95 in Delaware between mile markers 8 and 23.
Interstate 295 in New Jersey between mile markers 0 and 23.
Interstate 476 in Pennsylvania near mile marker 0.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
Flooding is occurring or is imminent. Most flood related deaths
occur in automobiles. Do not attempt to cross water covered bridges,
dips, or low water crossings. Never try to cross a flowing stream,
even a small one, on foot. To escape rising water find another route
over higher ground.
&&
LAT...LON 3963 7560 3962 7565 3970 7567 3976 7558
3987 7539 3992 7523 3990 7514 3983 7517
3979 7530 3967 7548 3965 7555
FLASH FLOOD...RADAR INDICATED
$$
MJL1 follow-up statement
729
WGUS71 KPHI 161747
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
147 PM EDT Sun Jul 16 2023
DEC003-NJC015-033-PAC045-101-161757-
/O.CAN.KPHI.FF.W.0066.000000T0000Z-230716T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle DE-Gloucester NJ-Salem NJ-Delaware PA-Philadelphia PA-
147 PM EDT Sun Jul 16 2023
...FLASH FLOOD WARNING FOR NORTHEASTERN NEW CASTLE, NORTHWESTERN
GLOUCESTER, NORTHWESTERN SALEM, SOUTHEASTERN DELAWARE, AND
SOUTHWESTERN PHILADELPHIA COUNTIES HAS BEEN REPLACED WITH A FLOOD
ADVISORY...
LAT...LON 3963 7560 3962 7565 3970 7567 3976 7558
3987 7539 3992 7523 3990 7514 3983 7517
3979 7530 3967 7548 3965 7555
$$
MJLThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 16, 1:21 AM EDT | Special Weather Statement | PHI | Kent | 24 min |
| Jul 16, 2:47 AM EDT | Special Weather Statement | PHI | New Castle | 28 min |
| Jul 16, 3:09 AM EDT | Special Weather Statement | PHI | Kent | 36 min |
| Jul 16, 3:54 AM EDT | Flash Flood Warning | PHI | Kent, Sussex | 4 hr |
| Jul 16, 7:02 AM EDT | Flash Flood Warning | PHI | Sussex | 108 min |
| Jul 16, 12:19 PM EDT | Areal Flood Advisory | PHI | Kent, Sussex | 60 min |
| Jul 16, 1:08 PM EDT | Areal Flood Advisory | PHI | Kent, New Castle | 3 hr |
| Jul 16, 1:19 PM EDT | Flash Flood Warning | PHI | Kent, Sussex | 4 hr |
| Jul 16, 1:42 PM EDT | Special Weather Statement | PHI | Kent | 33 min |
| Jul 16, 1:47 PM EDT | Areal Flood Advisory | PHI | New Castle | 80 min |
| Jul 16, 2:23 PM EDT | Areal Flood Advisory | PHI | Sussex | 71 min |
| Jul 16, 3:34 PM EDT | Flash Flood Warning | PHI | Sussex | 116 min |
| Jul 16, 2:22 AM EDT | Special Marine Warning | PHI | 53 min | |
| Jul 16, 3:08 AM EDT | Special Marine Warning | PHI | 42 min | |
| Jul 16, 3:40 AM EDT | Flash Flood Warning | PHI | Sussex, Warren | 7 hr |
| Jul 16, 4:05 AM EDT | Flash Flood Warning | PHI | Hunterdon, Warren | 6 hr |
| Jul 16, 4:14 AM EDT | Special Weather Statement | PHI | Hunterdon | 31 min |
| Jul 16, 4:38 AM EDT | Tornado Warning | PHI | Hunterdon, Somerset | 37 min |
| Jul 16, 4:50 AM EDT | Special Weather Statement | PHI | Burlington, Ocean | 25 min |
| Jul 16, 5:07 AM EDT | Tornado Warning | PHI | Hunterdon, Morris, Somerset | 38 min |
| Jul 16, 5:13 AM EDT | Flash Flood Warning | PHI | Sussex, Warren | 4 hr |
| Jul 16, 5:16 AM EDT | Special Weather Statement | PHI | Ocean | 29 min |
| Jul 16, 5:26 AM EDT | Flash Flood Warning | PHI | Hunterdon, Morris, Sussex, Warren | 4 hr |
| Jul 16, 5:31 AM EDT | Tornado Warning | PHI | Morris, Somerset, Sussex | 29 min |
| Jul 16, 5:44 AM EDT | Special Marine Warning | PHI | 61 min | |
| Jul 16, 5:45 AM EDT | Special Weather Statement | PHI | Monmouth | 30 min |
| Jul 16, 5:58 AM EDT | Tornado Warning | PHI | Morris | 32 min |
| Jul 16, 7:52 AM EDT | Special Marine Warning | PHI | 53 min | |
| Jul 16, 8:40 AM EDT | Special Marine Warning | PHI | 47 min | |
| Jul 16, 10:54 AM EDT | Areal Flood Warning | PHI | Warren | 5 hr |
| Jul 16, 11:36 AM EDT | Flash Flood Warning | PHI | Middlesex, Somerset | 3 hr |
| Jul 16, 12:22 PM EDT | Areal Flood Advisory | PHI | Mercer | 3 hr |
| Jul 16, 12:26 PM EDT | Areal Flood Advisory | PHI | Burlington, Camden | 3 hr |
| Jul 16, 1:50 PM EDT | Special Marine Warning | PHI | 85 min | |
| Jul 16, 2:20 PM EDT | Areal Flood Advisory | PHI | Middlesex, Somerset | 72 min |
| Jul 16, 2:42 PM EDT | Special Weather Statement | PHI | Cape May | 48 min |
| Jul 16, 3:09 PM EDT | Special Marine Warning | PHI | 51 min | |
| Jul 16, 6:17 PM EDT | Areal Flood Warning | PHI | Warren | 10 hr |
| Jul 16, 6:19 PM EDT | Areal Flood Warning | PHI | Warren | 10 hr |
| Jul 15, 8:37 PM EDT | Areal Flood Advisory | PHI | Carbon | 19 min |
| Jul 15, 8:44 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 30 min |
| Jul 15, 8:56 PM EDT | Flash Flood Warning | PHI | Carbon | 95 min |
| Jul 16, 12:50 AM EDT | Special Weather Statement | PHI | Berks | 25 min |
| Jul 16, 1:41 AM EDT | Special Weather Statement | PHI | Carbon, Lehigh | 34 min |
| Jul 16, 2:12 AM EDT | Special Weather Statement | PHI | Carbon, Lehigh, Monroe | 33 min |
| Jul 16, 2:43 AM EDT | Flash Flood Warning | PHI | Carbon, Lehigh, Monroe, Northampton | 4 hr |
| Jul 16, 9:12 AM EDT | Flash Flood Warning | PHI | Chester | 2 hr |
| Jul 16, 9:40 AM EDT | Flash Flood Warning | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 3 hr |
| Jul 16, 9:53 AM EDT | Tornado Warning | PHI | Montgomery, Philadelphia | 37 min |
| Jul 16, 6:44 PM EDT | Areal Flood Advisory | PHI | Bucks | 90 min |
Nearby
Flash Flood Warnings in New Jersey, 2023Flash Flood Warnings in Pennsylvania, 2023Flash Flood Warnings in Delaware, 2023Every flash flood warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.