Alert archive / Pennsylvania / Flash Flood Warnings in 2025
Flash Flood Warning 62, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 14, 2025, 5:32 PM EDT for 5 counties in Pennsylvania. It was in force for 6 hr. 3 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 14, 2025, 5:32 PM EDT (21:32 UTC)
- Expired
- Jul 14, 2025, 11:15 PM EDT
- In force
- 6 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Berks County, PA, Bucks County, PA, Chester County, PA, Lehigh County, PA, Montgomery County, PA
The radar
The Philadelphia radar (KDIX), 125 km from the middle of the area, began a volume at 21:33 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 14, 6:00 PM EDT | FLASH FLOOD | Pottstown, PA | Significant road flooding at High St. and College Dr. |
| Jul 14, 6:18 PM EDT | FLASH FLOOD | Zionsville, PA | Significant road flooding at Dillingersville Rd. and Church View Rd. |
| Jul 14, 7:45 PM EDT | FLASH FLOOD | 1 Ssw Upper Hanover Twp, PA | The Perkiomen Creek at East Greenville reached flood stage. |
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, 9.5 hours before the alert went out and 183 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
- 732 J/kg
- Mixed-layer CIN
- -46 J/kg
- Mixed-layer LCL
- 636 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 35 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
604
WGUS51 KPHI 142132
FFWPHI
PAC011-017-029-077-091-150145-
/O.NEW.KPHI.FF.W.0062.250714T2132Z-250715T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
532 PM EDT Mon Jul 14 2025
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
Southeastern Berks County in eastern Pennsylvania...
South Central Lehigh County in eastern Pennsylvania...
Southwestern Bucks County in southeastern Pennsylvania...
Northwestern Chester County in southeastern Pennsylvania...
Northwestern Montgomery County in southeastern Pennsylvania...
* Until 945 PM EDT.
* At 532 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1.5 and 2.5 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...
Pottstown, Phoenixville, Coatesville, Downingtown, Birdsboro,
Royersford, Parkesburg, Trappe, East Greenville, Honey Brook,
Schwenksville and Elverson.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
Move to higher ground now. Act quickly to protect your life.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
Flooding is occurring or is imminent. It is important to know where
you are relative to streams, rivers, or creeks which can become
killers in heavy rains. Campers and hikers should avoid streams or
creeks.
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 4022 7600 4053 7557 4033 7532 3989 7582
3989 7599 3993 7599 3993 7598 3995 7599
4004 7593 4011 7594 4014 7587
FLASH FLOOD...RADAR INDICATED
$$
MPS5 follow-up statements
287
WGUS71 KPHI 142240
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
640 PM EDT Mon Jul 14 2025
PAC011-017-029-077-091-150145-
/O.CON.KPHI.FF.W.0062.000000T0000Z-250715T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Berks PA-Bucks PA-Chester PA-Lehigh PA-Montgomery PA-
640 PM EDT Mon Jul 14 2025
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 945 PM EDT THIS
EVENING FOR SOUTHEASTERN BERKS, SOUTH CENTRAL LEHIGH, SOUTHWESTERN
BUCKS, NORTHWESTERN CHESTER AND NORTHWESTERN MONTGOMERY COUNTIES...
At 640 PM EDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 2 and 3 inches of rain have
fallen. Additional rainfall amounts up to 0.5 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...
Pottstown, Phoenixville, Coatesville, Downingtown, Birdsboro,
Royersford, Parkesburg, Trappe, East Greenville, Honey Brook,
Schwenksville and Elverson.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
Move to higher ground now. Act quickly to protect your life.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
Flooding is occurring or is imminent. It is important to know where
you are relative to streams, rivers, or creeks which can become
killers in heavy rains. Campers and hikers should avoid streams or
creeks.
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 4022 7600 4053 7557 4033 7532 3989 7582
3989 7599 3993 7599 3993 7598 3995 7599
4004 7593 4011 7594 4014 7587
FLASH FLOOD...RADAR INDICATED
$$
MPS434
WGUS71 KPHI 150026
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
826 PM EDT Mon Jul 14 2025
PAC011-150036-
/O.CAN.KPHI.FF.W.0062.000000T0000Z-250715T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Berks PA-
826 PM EDT Mon Jul 14 2025
...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHEASTERN BERKS COUNTY...
Flooding is no longer expected to pose a threat. Please continue to
heed remaining road closures.
A Flood Watch remains in effect until 200 AM EDT for portions of New
Jersey and Pennsylvania.
&&
LAT...LON 3993 7599 3993 7598 3995 7599 4004 7593
4011 7594 4024 7570 4045 7553 4050 7561
4053 7557 4033 7532 3989 7582 3989 7599
$$
PAC017-029-077-091-150145-
/O.CON.KPHI.FF.W.0062.000000T0000Z-250715T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Bucks PA-Chester PA-Lehigh PA-Montgomery PA-
826 PM EDT Mon Jul 14 2025
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 945 PM EDT THIS
EVENING FOR SOUTH CENTRAL LEHIGH, SOUTHWESTERN BUCKS, NORTHWESTERN
CHESTER AND NORTHWESTERN MONTGOMERY COUNTIES...
At 826 PM EDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 2 and 4 inches of rain have
fallen. Flooding impacts will continue, but no additional rainfall
is expected. 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...
Pottstown, Phoenixville, Coatesville, Downingtown, Royersford,
Parkesburg, Trappe, East Greenville, Honey Brook, Schwenksville,
Elverson and Green Lane.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
Move to higher ground now. Act quickly to protect your life.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
Flooding is occurring or is imminent. It is important to know where
you are relative to streams, rivers, or creeks which can become
killers in heavy rains. Campers and hikers should avoid streams or
creeks.
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 3993 7599 3993 7598 3995 7599 4004 7593
4011 7594 4024 7570 4045 7553 4050 7561
4053 7557 4033 7532 3989 7582 3989 7599
FLASH FLOOD...RADAR INDICATED
$$
MPS640
WGUS71 KPHI 150104
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
904 PM EDT Mon Jul 14 2025
PAC017-029-077-150114-
/O.CAN.KPHI.FF.W.0062.000000T0000Z-250715T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Bucks PA-Chester PA-Lehigh PA-
904 PM EDT Mon Jul 14 2025
...FLASH FLOOD WARNING IS CANCELLED FOR SOUTH CENTRAL LEHIGH,
SOUTHWESTERN BUCKS AND NORTHWESTERN CHESTER COUNTIES...
Flooding is no longer expected to pose a threat. Please continue to
heed remaining road closures.
A Flood Watch remains in effect until 200 AM EDT for portions of New
Jersey and Pennsylvania.
&&
LAT...LON 4017 7553 4018 7554 4020 7556 4020 7558
4023 7560 4022 7561 4024 7565 4024 7567
4024 7569 4045 7553 4032 7533 4015 7553
$$
PAC091-150145-
/O.CON.KPHI.FF.W.0062.000000T0000Z-250715T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Montgomery PA-
904 PM EDT Mon Jul 14 2025
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 945 PM EDT THIS
EVENING FOR NORTHWESTERN MONTGOMERY COUNTY...
At 904 PM EDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 2 and 4 inches of rain have
fallen. Flooding impacts will continue, but no additional rainfall
is expected. 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.
For West Branch Brandywine Creek at Coatesville:
At 8:45pm the stage was 4.27 feet.
Flood Stage is 7 feet.
For East Branch Brandywine Creek at Downingtown:
At 8:45pm the stage was 4.51 feet.
Flood Stage is 7 feet.
For Perkiomen Creek at East Greenville:
At 8:45pm the stage was 6.37 feet.
Flood Stage is 5 feet.
For Perkiomen Creek at Graterford:
At 8:30pm the stage was 1.59 feet.
Flood Stage is 11 feet.
For West Branch Perkiomen Creek at Hillegass:
At 8:15pm the stage was 1.87 feet.
Flood Stage is 5 feet.
For West Branch Brandywine Creek at Honey Brook:
At 8:45pm the stage was 3.97 feet.
Flood Stage is 7 feet.
For West Branch Brandywine Creek at Modena:
At 8:30pm the stage was 4.02 feet.
Flood Stage is 9 feet.
For French Creek at Phoenixville:
At 8:30pm the stage was 4.84 feet.
Flood Stage is 8 feet.
For Schuylkill River at Pottstown:
At 8:15pm the stage was 5.8 feet.
Flood Stage is 12.5 feet.
For Schuylkill River at Reading:
At 8:15pm the stage was 4.23 feet.
Flood Stage is 15.5 feet.
For East Branch Perkiomen at Schwenksville:
At 8:15pm the stage was 2.85 feet.
Flood Stage is 8 feet.
For Birch Run at Wagontown:
At 8:45pm the stage was 2.49 feet.
Flood Stage is 5 feet.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
Move to higher ground now. Act quickly to protect your life.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
Flooding is occurring or is imminent. It is important to know where
you are relative to streams, rivers, or creeks which can become
killers in heavy rains. Campers and hikers should avoid streams or
creeks.
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 4017 7553 4018 7554 4020 7556 4020 7558
4023 7560 4022 7561 4024 7565 4024 7567
4024 7569 4045 7553 4032 7533 4015 7553
FLASH FLOOD...RADAR INDICATED
$$
MPS442
WGUS51 KPHI 150109
FFWPHI
PAC091-150315-
/O.EXT.KPHI.FF.W.0062.000000T0000Z-250715T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
909 PM EDT Mon Jul 14 2025
The National Weather Service in Mount Holly has extended the
* Flash Flood Warning for...
Northwestern Montgomery County in southeastern Pennsylvania...
* Until 1115 PM EDT.
* At 909 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 4 inches of rain
have fallen. Flooding impacts will continue, but no additional
rainfall is expected. 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.
* For Perkiomen Creek at East Greenville:
At 8:45pm the stage was 6.37 feet.
Flood Stage is 5 feet.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
Move to higher ground now. Act quickly to protect your life.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
Flooding is occurring or is imminent. It is important to know where
you are relative to streams, rivers, or creeks which can become
killers in heavy rains. Campers and hikers should avoid streams or
creeks.
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 4017 7553 4018 7554 4020 7556 4020 7558
4023 7560 4022 7561 4024 7565 4024 7567
4024 7569 4045 7553 4032 7533 4015 7553
FLASH FLOOD...RADAR INDICATED
$$
MPS448
WGUS71 KPHI 150313
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
1113 PM EDT Mon Jul 14 2025
PAC091-150323-
/O.EXP.KPHI.FF.W.0062.000000T0000Z-250715T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Montgomery PA-
1113 PM EDT Mon Jul 14 2025
...FLASH FLOOD WARNING WILL EXPIRE AT 1115 PM EDT THIS EVENING FOR
NORTHWESTERN MONTGOMERY COUNTY...
The heavy rain has ended, and no additional flooding is expected. A
Flood Warning remains in effect for the Perkiomen Creek. The creek
has risen to moderate flood stage and continues to rise as of 11 PM
EDT. Please continue to heed remaining road closures.
&&
LAT...LON 4017 7553 4018 7554 4020 7556 4020 7558
4023 7560 4022 7561 4024 7565 4024 7567
4024 7569 4045 7553 4032 7533 4015 7553
$$
StaarmannThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 3:37 PM EDT | Flash Flood Warning | PHI | Carbon, Monroe | 4 hr |
| Jul 14, 3:42 PM EDT | Severe Thunderstorm Warning | PHI | Lehigh, Northampton | 9 min |
| Jul 14, 4:49 PM EDT | Flash Flood Warning | PHI | Carbon, Lehigh, Monroe, Northampton | 3 hr |
| Jul 14, 5:25 PM EDT | Flash Flood Warning | PHI | Bucks, Lehigh, Northampton | 4 hr |
| Jul 14, 7:45 PM EDT | Flash Flood Warning | PHI | Bucks, Montgomery, Philadelphia | 2 hr |
Nearby
Flash Flood Warnings in Pennsylvania, 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.