Alert archive / New Jersey / Flash Flood Warnings in 2023
Flash Flood Warning 61, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 16, 2023, 5:13 AM EDT for Sussex County, Warren County, New Jersey. It was in force for 4 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, 5:13 AM EDT (09:13 UTC)
- Expired
- Jul 16, 2023, 9:09 AM EDT
- In force
- 4 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Sussex County, NJ, Warren County, NJ
The radar
The Philadelphia radar (KDIX), 143 km from the middle of the area, began a volume at 09:17 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 16, 7:00 AM EDT | RAIN 3.65 | Wantage Twp, NJ | 3.65 inch rain report since midnight. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 9.2 hours before the alert went out and 164 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
- 1061 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 624 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 63 m²/s²
- 0-3 km storm-relative helicity
- 29 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 2.0
The text
As transmitted.
867
WGUS51 KPHI 160913
FFWPHI
NJC037-041-161315-
/O.NEW.KPHI.FF.W.0061.230716T0913Z-230716T1315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
513 AM EDT Sun Jul 16 2023
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
Sussex County in northwestern New Jersey...
Northeastern Warren County in northwestern New Jersey...
* Until 915 AM EDT.
* At 513 AM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 2 inches of rain
have fallen. The expected rainfall rate is 1 to 1.5 inches in 1
hour. 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...
Newton, Montague, Franklin, Hamburg, Ogdensburg, Sussex,
Branchville, Andover, Pellettown, Hainesville, Crandon Lakes, and
High Point.
This includes the following highways...
Interstate 80 in New Jersey between mile markers 15 and 16.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
&&
LAT...LON 4118 7489 4128 7484 4135 7475 4136 7469
4121 7439 4090 7492
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...1-1.5 INCHES IN 1 HOUR
$$
SFJ2 follow-up statements
345
WGUS71 KPHI 161010
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
610 AM EDT Sun Jul 16 2023
NJC037-041-161315-
/O.CON.KPHI.FF.W.0061.000000T0000Z-230716T1315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sussex NJ-Warren NJ-
610 AM EDT Sun Jul 16 2023
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 915 AM EDT THIS
MORNING FOR SUSSEX AND NORTHEASTERN WARREN COUNTIES...
At 610 AM EDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 2 and 3 inches of rain have
fallen. The expected rainfall rate is 0.5 to 1 inch in 1 hour.
Additional rainfall amounts of 0.5 to 1 inch are possible in the
warned area. Flash flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets, and underpasses as well as other
drainage and low lying areas.
Some locations that may experience flash flooding include...
Newton, Montague, Franklin, Hamburg, Ogdensburg, Sussex,
Branchville, Andover, Pellettown, Hainesville, Crandon Lakes, and
High Point.
This includes the following highways...
Interstate 80 in New Jersey between mile markers 15 and 16.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
&&
LAT...LON 4118 7489 4128 7484 4135 7475 4136 7469
4121 7439 4090 7492
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...0.5-1 INCH IN 1 HOUR
$$
SFJ968
WGUS71 KPHI 161309
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
909 AM EDT Sun Jul 16 2023
NJC037-041-161319-
/O.CAN.KPHI.FF.W.0061.000000T0000Z-230716T1315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sussex NJ-Warren NJ-
909 AM EDT Sun Jul 16 2023
...FLASH FLOOD WARNING IS CANCELLED FOR SUSSEX AND NORTHEASTERN
WARREN COUNTIES...
Flood waters have receded. The heavy rain has ended. Flooding is no
longer expected to pose a threat.
A Flood Watch remains in effect until 1200 AM EDT Monday for
portions of northern Delaware...New Jersey...and Pennsylvania.
LAT...LON 4118 7489 4128 7484 4135 7475 4136 7469
4121 7439 4090 7492
$$
MJLThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 16, 2:22 AM EDT | Special Marine Warning | PHI | 53 min | |
| Jul 16, 2:47 AM EDT | Special Weather Statement | PHI | Gloucester, Salem | 28 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, 5:16 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, 11:08 AM EDT | Flash Flood Warning | PHI | Gloucester, Salem | 3 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, 1:47 PM EDT | Areal Flood Advisory | PHI | Gloucester, Salem | 80 min |
| 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 |
Nearby
Flash Flood Warnings in New Jersey, 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.