Alert archive / Delaware / Flash Flood Warnings in 2025
Flash Flood Warning 70, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 15, 2025, 6:34 PM EDT for Kent County, Sussex County, Delaware. It was in force for 2 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 15, 2025, 6:34 PM EDT (22:34 UTC)
- Expired
- Jul 15, 2025, 8:56 PM EDT
- In force
- 2 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Kent County, DE, Sussex County, DE
The radar
The Dover AFB radar (KDOX), 9 km from the middle of the area, began a volume at 22:37 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 15, 7:54 PM EDT | RAIN 2.81 | 2 Sse Farmington, DE | 2.81 in around 2 hours. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 10.6 hours before the alert went out and 100 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
- 433 J/kg
- Mixed-layer CIN
- -42 J/kg
- Mixed-layer LCL
- 756 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -25 m²/s²
- 0-3 km storm-relative helicity
- -46 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
169
WGUS51 KPHI 152234
FFWPHI
DEC001-005-160245-
/O.NEW.KPHI.FF.W.0070.250715T2234Z-250716T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
634 PM EDT Tue Jul 15 2025
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
South Central Kent County in central Delaware...
Northwestern Sussex County in southern Delaware...
* Until 1045 PM EDT.
* At 634 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 1.5 to 2.5 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...
Milford, Bridgeville, Ellendale, Andrewsville, Greenwood and
Farmington.
This includes the following streams and drainages...
Cedar Creek NANTICOKE, Mispillion River BROADKILL-SMYRNA, Jones
Mill Branch NANTICOKE, West Branch Gum Branch NANTICOKE, Number
One, Prong NANTICOKE, Parker Branch NANTICOKE, Owens Branch
NANTICOKE, Marshyhope Creek NANTICOKE, Round Pole Branch
BROADKILL-SMYRNA, Smith-Short and Willin Ditch NANTICOKE,
BROADKILL-SMYRNA, Polk Branch NANTICOKE, Church Branch
BROADKILL-SMYRNA, Deep Branch BROADKILL-SMYRNA, Ingram Branch
BROADKILL-SMYRNA, Cedar Creek BROADKILL-SMYRNA, Mifflin Ditch
NANTICOKE, Gravelly Branch NANTICOKE, Nanticoke River NANTICOKE,
Grubby Neck Branch NANTICOKE, Sowbridge Branch BROADKILL-SMYRNA,
Gully Camp Ditch NANTICOKE, Cart Branch NANTICOKE, Dutton Ditch
BROADKILL-SMYRNA, Number Two, Prong NANTICOKE, Deep Creek
NANTICOKE, Prospect Branch NANTICOKE, Quarter Branch NANTICOKE,
White Marsh Branch NANTICOKE and Broadkill River BROADKILL-SMYRNA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
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 3887 7564 3889 7543 3873 7531 3872 7560
3885 7563
FLASH FLOOD...RADAR INDICATED
$$
MPS2 follow-up statements
102
WGUS71 KPHI 152312
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
712 PM EDT Tue Jul 15 2025
DEC001-152322-
/O.CAN.KPHI.FF.W.0070.000000T0000Z-250716T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Kent DE-
712 PM EDT Tue Jul 15 2025
...FLASH FLOOD WARNING IS CANCELLED FOR SOUTH CENTRAL KENT COUNTY...
Flooding is no longer expected to pose a threat. Please continue to
heed remaining road closures.
&&
LAT...LON 3876 7559 3884 7562 3884 7557 3884 7556
3884 7555 3885 7555 3885 7544 3875 7545
$$
DEC005-160245-
/O.CON.KPHI.FF.W.0070.000000T0000Z-250716T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sussex DE-
712 PM EDT Tue Jul 15 2025
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1045 PM EDT THIS
EVENING FOR NORTHWESTERN SUSSEX COUNTY...
At 712 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...
Greenwood.
This includes the following streams and drainages...
Gravelly Branch NANTICOKE, West Branch Gum Branch NANTICOKE,
Nanticoke River NANTICOKE, Number One, Prong NANTICOKE, Grubby
Neck Branch NANTICOKE, Owens Branch NANTICOKE, Parker Branch
NANTICOKE, Gully Camp Ditch NANTICOKE, Cart Branch NANTICOKE,
Smith-Short and Willin Ditch NANTICOKE, White Marsh Branch
NANTICOKE, Cedar Creek BROADKILL-SMYRNA, Cedar Creek NANTICOKE and
Mispillion River BROADKILL-SMYRNA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
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 3876 7559 3884 7562 3884 7557 3884 7556
3884 7555 3885 7555 3885 7544 3875 7545
FLASH FLOOD...RADAR INDICATED
$$
MPS406
WGUS71 KPHI 160056
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
856 PM EDT Tue Jul 15 2025
DEC005-160106-
/O.CAN.KPHI.FF.W.0070.000000T0000Z-250716T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sussex DE-
856 PM EDT Tue Jul 15 2025
...FLASH FLOOD WARNING IS CANCELLED FOR NORTHWESTERN SUSSEX COUNTY...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
&&
LAT...LON 3876 7559 3884 7562 3884 7557 3884 7556
3884 7555 3885 7555 3885 7544 3875 7545
$$
MPSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 15, 2:37 PM EDT | Flood Watch | PHI | New Castle | 34 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.