Alert archive / Delaware / Flash Flood Warnings in 2024
Flash Flood Warning 46, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 7, 2024, 3:02 PM EDT for Kent County, Sussex County, Delaware. It was in force for 3 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
- Aug 7, 2024, 3:02 PM EDT (19:02 UTC)
- Expired
- Aug 7, 2024, 5:55 PM EDT
- In force
- 3 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), 8 km from the middle of the area, began a volume at 19:02 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 |
|---|---|---|---|
| Aug 7, 3:30 PM EDT | FLOOD | 2 Nne Lincoln, DE | Video of street flooding in the Orchard Hill development relayed via broadcast media. |
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, 7.0 hours before the alert went out and 105 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
- 178 J/kg
- Mixed-layer CIN
- -59 J/kg
- Mixed-layer LCL
- 851 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- -23 m²/s²
- 0-3 km storm-relative helicity
- 24 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
539
WGUS51 KPHI 071902
FFWPHI
DEC001-005-072300-
/O.NEW.KPHI.FF.W.0046.240807T1902Z-240807T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
302 PM EDT Wed Aug 7 2024
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
Southeastern Kent County in central Delaware...
Northern Sussex County in southern Delaware...
* Until 700 PM EDT.
* At 302 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain south of Milford, Delaware. Between 2 and 4 inches of
rain have fallen. Additional rainfall amounts up 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...
Milford, Harrington, Lewes, Milton, Ellendale, Big Stone Beach,
Greenwood, Houston and Farmington.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
&&
LAT...LON 3903 7529 3886 7518 3878 7514 3871 7558
3879 7559 3893 7557
FLASH FLOOD...RADAR INDICATED
$$
DeSilva2 follow-up statements
928
WGUS71 KPHI 071939
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
339 PM EDT Wed Aug 7 2024
DEC001-005-072300-
/O.CON.KPHI.FF.W.0046.000000T0000Z-240807T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Kent DE-Sussex DE-
339 PM EDT Wed Aug 7 2024
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 7 PM EDT THIS EVENING
FOR SOUTHEASTERN KENT AND NORTHERN SUSSEX COUNTIES...
At 339 PM EDT, Doppler radar indicated thunderstorms producing heavy
rain south of Milford, Delaware. Reports of street flooding is now
occurring in Milford. Between 2 and 4 inches of rain have fallen.
Additional rainfall amounts up to 2 inches are possible in the
warned area. Flash flooding is ongoing.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets, and underpasses as well as other
drainage and low lying areas.
Some locations that may experience flash flooding include...
Milford, Harrington, Lewes, Milton, Ellendale, Big Stone Beach,
Greenwood, Houston and Farmington.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 3903 7529 3886 7518 3878 7514 3871 7558
3879 7559 3893 7557
FLASH FLOOD...RADAR INDICATED
$$
DeSilva165
WGUS71 KPHI 072155
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
555 PM EDT Wed Aug 7 2024
DEC001-005-072205-
/O.CAN.KPHI.FF.W.0046.000000T0000Z-240807T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Kent DE-Sussex DE-
555 PM EDT Wed Aug 7 2024
...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHEASTERN KENT AND
NORTHERN SUSSEX COUNTIES...
The heavy rain has ended, and flood waters are receding. Flooding is
no longer expected to pose a threat. Please continue to heed
remaining road closures.
&&
LAT...LON 3903 7529 3886 7518 3878 7514 3871 7558
3879 7559 3893 7557
$$
RobertsonThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 4:08 PM EDT | Flash Flood Warning | PHI | Sussex | 3 hr |
| Aug 7, 5:59 PM EDT | Flash Flood Warning | PHI | Kent, Sussex | 115 min |
Nearby
Flash Flood Warnings in Delaware, 2024Every flash flood warning in 2024
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.