Alert archive / Delaware / Flash Flood Warnings in 2025
Flash Flood Warning 57, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 14, 2025, 3:33 PM EDT for New Castle County, Delaware. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 14, 2025, 3:33 PM EDT (19:33 UTC)
- Expired
- Jul 14, 2025, 7:23 PM EDT
- In force
- 4 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
County New Castle County, DE
The radar
The Dover AFB radar (KDOX), 83 km from the middle of the area, began a volume at 19:37 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.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 7.6 hours before the alert went out and 159 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.
624
WGUS51 KPHI 141933
FFWPHI
DEC003-142345-
/O.NEW.KPHI.FF.W.0057.250714T1933Z-250714T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
333 PM EDT Mon Jul 14 2025
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
West Central New Castle County in northern Delaware...
* Until 745 PM EDT.
* At 333 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 1.5 inches of
rain have fallen. Additional rainfall amounts of 0.5 to 1.5 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...
Mount Pleasant.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
Keep children away from storm drains, culverts, creeks, and streams.
Water levels can rise rapidly and sweep children away.
Be aware of your surroundings and do not drive on flooded roads.
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 3951 7568 3949 7578 3950 7578 3955 7578
3959 7571 3959 7567 3956 7565
FLASH FLOOD...RADAR INDICATED
$$
MPS2 follow-up statements
207
WGUS71 KPHI 142151
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
551 PM EDT Mon Jul 14 2025
DEC003-142345-
/O.CON.KPHI.FF.W.0057.000000T0000Z-250714T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle DE-
551 PM EDT Mon Jul 14 2025
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 745 PM EDT THIS
EVENING FOR WEST CENTRAL NEW CASTLE COUNTY...
At 551 PM EDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 2.5 and 3.5 inches of rain have
fallen. Additional rainfall amounts of 0.5 to 1 inch are possible in
the warned area. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets, and underpasses as well as other
drainage and low lying areas.
Some locations that may experience flash flooding include...
Mount Pleasant.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
Keep children away from storm drains, culverts, creeks, and streams.
Water levels can rise rapidly and sweep children away.
Be aware of your surroundings and do not drive on flooded roads.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 3951 7568 3949 7578 3950 7578 3955 7578
3959 7571 3959 7567 3956 7565
FLASH FLOOD...RADAR INDICATED
$$
MPS200
WGUS71 KPHI 142323
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
723 PM EDT Mon Jul 14 2025
DEC003-142333-
/O.CAN.KPHI.FF.W.0057.000000T0000Z-250714T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle DE-
723 PM EDT Mon Jul 14 2025
...FLASH FLOOD WARNING IS CANCELLED FOR WEST CENTRAL NEW CASTLE
COUNTY...
The heavy rain has ended. 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 Tuesday for
portions of northern Delaware, northeast Maryland, New Jersey, and
northeast Pennsylvania.
&&
LAT...LON 3951 7568 3949 7578 3950 7578 3955 7578
3959 7571 3959 7567 3956 7565
$$
MPSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 3:14 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 31 min |
| Jul 14, 4:34 PM EDT | Flash Flood Warning | PHI | New Castle | 4 hr |
Nearby
Flash Flood Warnings in Delaware, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.