Alert archive / Pennsylvania / Flash Flood Warnings in 2025
Flash Flood Warning 33, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 1, 2025, 5:14 PM EDT for 4 counties in Pennsylvania. It was in force for 4 hr. 7 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 1, 2025, 5:14 PM EDT (21:14 UTC)
- Expired
- Jul 1, 2025, 9:15 PM EDT
- In force
- 4 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Berks County, PA, Bucks County, PA, Lehigh County, PA, Montgomery County, PA
The radar
The Philadelphia radar (KDIX), 114 km from the middle of the area, began a volume at 21:14 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 1, 5:29 PM EDT | FLASH FLOOD | 2 E Pike Twp, PA | Vehicle stuck in rising flood water at the intersection of Baldy Hill Road and Landis Store Road. |
| Jul 1, 5:33 PM EDT | FLASH FLOOD | 1 Ene Pike Twp, PA | Person trapped in vehicle due to flooding with a water rescue occurring on Oysterdale Road. |
| Jul 1, 6:11 PM EDT | FLASH FLOOD | Oley Twp, PA | Multiple water rescues due to homes being inundated by flood water. |
| Jul 1, 6:11 PM EDT | FLASH FLOOD | Oley Twp, PA | Multiple residents trapped in their home and occupants stuck in vehicles on Philadelphia Ave. |
| Jul 1, 6:45 PM EDT | FLASH FLOOD | 1 S Upper Hanover Twp, PA | The Perkiomen Creek at East Greenville rapidly went into flood stage. |
| Jul 1, 7:47 PM EDT | FLASH FLOOD | Oley, PA | Water rescue of two residents from their home that is surrounded by water. |
| Jul 1, 8:00 PM EDT | RAIN 2.87 | District Twp, PA |
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, 9.2 hours before the alert went out and 228 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
- 822 J/kg
- Mixed-layer CIN
- -69 J/kg
- Mixed-layer LCL
- 994 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- -2 m²/s²
- 0-3 km storm-relative helicity
- 32 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
237
WGUS51 KPHI 012114
FFWPHI
PAC011-017-077-091-020115-
/O.NEW.KPHI.FF.W.0033.250701T2114Z-250702T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
514 PM EDT Tue Jul 1 2025
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
East Central Berks County in eastern Pennsylvania...
Southeastern Lehigh County in eastern Pennsylvania...
Western Bucks County in southeastern Pennsylvania...
Northwestern Montgomery County in southeastern Pennsylvania...
* Until 915 PM EDT.
* At 514 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...
Emmaus, Quakertown, Kutztown, Fleetwood, East Greenville, Topton,
Schwenksville, Bally, Bechtelsville, Green Lane, Lyons and
Gilbertsville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
&&
LAT...LON 4054 7570 4055 7561 4054 7556 4053 7549
4050 7542 4044 7536 4035 7534 4031 7536
4027 7541 4026 7550 4043 7594 4048 7590
4052 7585
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...1-2 INCHES IN 1 HOUR
$$
Hoeflich2 follow-up statements
574
WGUS71 KPHI 012144
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
544 PM EDT Tue Jul 1 2025
PAC011-017-077-091-020115-
/O.CON.KPHI.FF.W.0033.000000T0000Z-250702T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Berks PA-Bucks PA-Lehigh PA-Montgomery PA-
544 PM EDT Tue Jul 1 2025
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 915 PM EDT THIS
EVENING FOR EAST CENTRAL BERKS, SOUTHEASTERN LEHIGH, WESTERN BUCKS
AND NORTHWESTERN MONTGOMERY COUNTIES...
At 544 PM EDT, local law enforcement reported thunderstorms
producing heavy rain in Vehicles suck in rising water along Baldy
Hill Road and Landis Shore Road. . Between 1 and 2 inches of rain
have fallen. Additional rainfall amounts of 0.5 to 1 inch are
possible in the warned area. Flash flooding is already occurring.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Law enforcement reported.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets, and underpasses as well as other
drainage and low lying areas.
Some locations that may experience flash flooding include...
Emmaus, Quakertown, Kutztown, Fleetwood, East Greenville, Topton,
Schwenksville, Bally, Bechtelsville, Green Lane, Lyons and
Gilbertsville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
&&
LAT...LON 4054 7570 4055 7561 4054 7556 4053 7549
4050 7542 4044 7536 4035 7534 4031 7536
4027 7541 4026 7550 4043 7594 4048 7590
4052 7585
FLASH FLOOD...OBSERVED
$$
Hoeflich803
WGUS71 KPHI 020106
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
906 PM EDT Tue Jul 1 2025
PAC011-017-077-091-020116-
/O.EXP.KPHI.FF.W.0033.000000T0000Z-250702T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Berks PA-Bucks PA-Lehigh PA-Montgomery PA-
906 PM EDT Tue Jul 1 2025
...FLASH FLOOD WARNING WILL EXPIRE AT 915 PM EDT THIS EVENING FOR
EAST CENTRAL BERKS, SOUTHEASTERN LEHIGH, WESTERN BUCKS AND
NORTHWESTERN MONTGOMERY COUNTIES...
The heavy rain has ended. Flash flooding is no longer expected to
pose a threat. Please continue to heed remaining road closures. A
more targeted Flood Warning was just issued as some creeks and
streams, such as the Perkiomen Creek at East Greenville, remain in
flood stage. Please refer to that bulletin for the updated
information.
A Flood Watch remains in effect until 200 AM EDT for portions of
northern Delaware, New Jersey, and Pennsylvania.
&&
LAT...LON 4054 7570 4055 7561 4054 7556 4053 7549
4050 7542 4044 7536 4035 7534 4031 7536
4027 7541 4026 7550 4043 7594 4048 7590
4052 7585
$$
HoeflichThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 30, 11:20 PM EDT | Flash Flood Warning | PHI | Berks | 4 hr |
| Jun 30, 11:47 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester, Delaware, Montgomery | 43 min |
| Jul 1, 12:38 AM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware | 36 min |
| Jul 1, 2:30 AM EDT | Flood Watch | PHI | Berks, Bucks, Chester, Delaware, Montgomery, Philadelphia | 19 hr |
| Jul 1, 6:15 AM EDT | River Flood Warning | PHI | Chester | 3 hr |
| Jul 1, 6:21 AM EDT | Areal Flood Warning | PHI | Delaware | 2 hr |
| Jul 1, 2:32 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 43 min |
| Jul 1, 2:58 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery, Philadelphia | 47 min |
| Jul 1, 3:00 PM EDT | Flash Flood Warning | PHI | Chester | 4 hr |
| Jul 1, 3:06 PM EDT | River Flood Warning | PHI | Chester, Delaware | 8 hr |
| Jul 1, 3:31 PM EDT | Flash Flood Warning | PHI | Bucks, Montgomery, Philadelphia | 4 hr |
| Jul 1, 3:34 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 56 min |
| Jul 1, 3:39 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Philadelphia | 66 min |
| Jul 1, 4:27 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester, Lehigh, Montgomery | 63 min |
| Jul 1, 4:44 PM EDT | Flash Flood Warning | PHI | Chester | 4 hr |
| Jul 1, 4:47 PM EDT | Tornado Warning | PHI | Berks, Montgomery | 28 min |
| Jul 1, 4:55 PM EDT | Flash Flood Warning | PHI | Berks, Chester, Montgomery | 4 hr |
| Jul 1, 5:07 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Lehigh, Montgomery, Northampton | 38 min |
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.