Alert archive / Pennsylvania / Flash Flood Warnings in 2025
Flash Flood Warning 35, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 3, 2025, 6:11 PM EDT for Carbon County, Lehigh County, Northampton County, Pennsylvania; Hunterdon County, Warren County, New Jersey. It was in force for 4 hr. 6 reports 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 3, 2025, 6:11 PM EDT (22:11 UTC)
- Expired
- Jul 3, 2025, 10:15 PM EDT
- In force
- 4 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Hunterdon County, NJ, Warren County, NJ, Carbon County, PA, Lehigh County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 123 km from the middle of the area, began a volume at 22:15 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 3, 6:45 PM EDT | FLASH FLOOD | Lower Saucon Twp, PA | Reports of flooding along Easton Road. Time estimated. |
| Jul 3, 6:55 PM EDT | FLASH FLOOD | 2 Se Tatamy, PA | Report of flooding around Zucksville Road in Easton. |
| Jul 3, 7:00 PM EDT | FLASH FLOOD | 1 Ssw Bethlehem, PA | Easton Ave closed due to flash flooding. Time estimated. |
| Jul 3, 7:00 PM EDT | FLASH FLOOD | Eastlawn Gardens, PA | Multiple flooded roadways reported around Nazareth. |
| Jul 3, 7:00 PM EDT | FLASH FLOOD | Forks, PA | Multiple road closures across the area due to flooding. Time estimated. |
| Jul 3, 7:10 PM EDT | FLASH FLOOD | Phillipsburg, NJ | Road closures in Phillipsburg due to flash flooding. Time estimated. |
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 12:00Z, 10.2 hours before the alert went out and 217 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1536 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- -37 m²/s²
- 0-3 km storm-relative helicity
- 10 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.2
The text
As transmitted.
576
WGUS51 KPHI 032211
FFWPHI
NJC019-041-PAC025-077-095-040215-
/O.NEW.KPHI.FF.W.0035.250703T2211Z-250704T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
611 PM EDT Thu Jul 3 2025
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
Northwestern Hunterdon County in northwestern New Jersey...
Southwestern Warren County in northwestern New Jersey...
Northern Lehigh County in eastern Pennsylvania...
Northampton County in eastern Pennsylvania...
Southern Carbon County in northeastern Pennsylvania...
* Until 1015 PM EDT.
* At 611 PM 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 2 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...
Allentown, Easton, Lehighton, Bethlehem, Forks, Northampton,
Wilson, Nazareth, Palmerton, Jim Thorpe, Slatington and Bath.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
&&
LAT...LON 4083 7548 4081 7547 4082 7535 4078 7514
4072 7501 4063 7498 4059 7519 4061 7520
4059 7524 4063 7573 4069 7585 4074 7576
4084 7591 4085 7580
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...1-2 INCHES IN 1 HOUR
$$
Hoeflich2 follow-up statements
598
WGUS71 KPHI 032315
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
715 PM EDT Thu Jul 3 2025
PAC025-032325-
/O.CAN.KPHI.FF.W.0035.000000T0000Z-250704T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Carbon PA-
715 PM EDT Thu Jul 3 2025
...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHERN CARBON COUNTY...
Flooding is no longer expected to pose a threat. Please continue to
heed remaining road closures.
&&
LAT...LON 4069 7585 4077 7569 4081 7554 4082 7535
4078 7514 4072 7501 4063 7498 4059 7519
4061 7520 4059 7524 4063 7573
$$
NJC019-041-PAC077-095-040215-
/O.CON.KPHI.FF.W.0035.000000T0000Z-250704T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hunterdon NJ-Warren NJ-Lehigh PA-Northampton PA-
715 PM EDT Thu Jul 3 2025
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 PM EDT THIS
EVENING FOR NORTHWESTERN HUNTERDON, SOUTHWESTERN WARREN, NORTHERN
LEHIGH AND NORTHAMPTON COUNTIES...
At 715 PM EDT, emergency management reported thunderstorms producing
heavy rain with multiple flooded roadways reported from Nazareth and
Bethlehem to Easton. Between 1.5 to 2.5 inches of rain have fallen.
The expected rainfall rate is 1 inch in 1 hour. Additional rainfall
amounts of 0.5 to 1 inch are possible in the warned area. Flash
flooding is already occurring.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Emergency management reported.
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...
Allentown, Easton, Bethlehem, Forks, Northampton, Wilson,
Nazareth, Slatington, Bath, Harmony, Alpha and Walnutport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 4069 7585 4077 7569 4081 7554 4082 7535
4078 7514 4072 7501 4063 7498 4059 7519
4061 7520 4059 7524 4063 7573
FLASH FLOOD...OBSERVED
EXPECTED RAINFALL RATE...1 INCH IN 1 HOUR
$$
Hoeflich559
WGUS71 KPHI 040206
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
1006 PM EDT Thu Jul 3 2025
NJC019-041-PAC077-095-040216-
/O.EXP.KPHI.FF.W.0035.000000T0000Z-250704T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hunterdon NJ-Warren NJ-Lehigh PA-Northampton PA-
1006 PM EDT Thu Jul 3 2025
...FLASH FLOOD WARNING WILL EXPIRE AT 1015 PM EDT THIS EVENING FOR
NORTHWESTERN HUNTERDON, SOUTHWESTERN WARREN, NORTHERN LEHIGH AND
NORTHAMPTON COUNTIES...
Flood waters have receded. The heavy rain has ended. Flooding is no
longer expected to pose a threat. Please continue to heed remaining
road closures.
&&
LAT...LON 4069 7585 4077 7569 4081 7554 4082 7535
4078 7514 4072 7501 4063 7498 4059 7519
4061 7520 4059 7524 4063 7573
$$
RCMThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 3, 2:38 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh | 21 min |
| Jul 3, 3:23 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Lehigh, Montgomery | 26 min |
| Jul 3, 3:35 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 40 min |
| Jul 3, 3:56 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 49 min |
| Jul 3, 4:41 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Carbon, Lehigh, Monroe, Northampton | 49 min |
| Jul 3, 5:27 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Lehigh, Northampton | 48 min |
| Jul 3, 5:56 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Lehigh, Northampton | 49 min |
| Jul 3, 6:39 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Lehigh, Northampton | 34 min |
| Jul 3, 4:02 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex | 43 min |
| Jul 3, 5:16 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Somerset, Warren | 44 min |
| Jul 3, 5:53 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex, Morris, Somerset | 37 min |
| Jul 3, 6:43 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth | 32 min |
| Jul 3, 6:48 PM EDT | Special Marine Warning | PHI | 87 min | |
| Jul 3, 7:55 PM EDT | Special Marine Warning | PHI | 95 min |
Nearby
Flash Flood Warnings in Pennsylvania, 2025Flash Flood Warnings in New Jersey, 2025Every flash flood warning in 2025
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.