Alert archive / Delaware / Flash Flood Warnings in 2024
Flash Flood Warning 3, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jun 6, 2024, 12:18 AM EDT for New Castle County, Delaware. It was in force for 3 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
- Jun 6, 2024, 12:18 AM EDT (04:18 UTC)
- Expired
- Jun 6, 2024, 3:15 AM EDT
- In force
- 3 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), 99 km from the middle of the area, began a volume at 04:21 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 00:00Z, 4.3 hours before the alert went out and 174 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
- 1406 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 781 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 268 m²/s²
- 0-3 km storm-relative helicity
- 360 m²/s²
- Significant tornado parameter
- 2.1
- Supercell composite
- 28.1
The text
As transmitted.
738
WGUS51 KPHI 060418
FFWPHI
DEC003-060715-
/O.NEW.KPHI.FF.W.0003.240606T0418Z-240606T0715Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
1218 AM EDT Thu Jun 6 2024
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
Northern New Castle County in northern Delaware...
* Until 315 AM EDT.
* At 1218 AM EDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Between
1.5 and 3 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 and automated gauges.
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...
Wilmington, Newark, Elsmere, New Castle, Newport, Wilmington
Manor, Delaware Memorial Bridge, Bellefonte, Edgemoor and
Brookside.
This includes Interstate 95 in Delaware between mile markers 5 and
16.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
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 3969 7572 3971 7562 3977 7555 3977 7546
3964 7555 3966 7574
FLASH FLOOD...RADAR AND GAUGE INDICATED
$$
MJL2 follow-up statements
447
WGUS71 KPHI 060618
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
218 AM EDT Thu Jun 6 2024
DEC003-060715-
/O.CON.KPHI.FF.W.0003.000000T0000Z-240606T0715Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle DE-
218 AM EDT Thu Jun 6 2024
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 315 AM EDT EARLY THIS
MORNING FOR NORTHERN NEW CASTLE COUNTY...
At 218 AM EDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Between
1.5 and 3 inches of rain have fallen. Flash flooding is ongoing.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar and automated gauges.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets, and underpasses as well as other
drainage and low lying areas.
For White Clay Creek at Newark:
At 1:30am the stage was 12.99 feet.
Flood Stage is 13 feet.
This includes Interstate 95 in Delaware between mile markers 5 and
12.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 3969 7572 3969 7564 3972 7558 3972 7549
3964 7555 3966 7574
FLASH FLOOD...RADAR AND GAUGE INDICATED
$$
Deal256
WGUS71 KPHI 060706
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
306 AM EDT Thu Jun 6 2024
DEC003-060716-
/O.EXP.KPHI.FF.W.0003.000000T0000Z-240606T0715Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle DE-
306 AM EDT Thu Jun 6 2024
...FLASH FLOOD WARNING WILL EXPIRE AT 315 AM EDT EARLY THIS MORNING
FOR NORTHERN NEW CASTLE COUNTY...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
&&
LAT...LON 3969 7572 3969 7564 3972 7558 3972 7549
3964 7555 3966 7574
$$
DealThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 5, 8:36 PM EDT | Tornado Warning | PHI | New Castle | 24 min |
| Jun 5, 10:57 PM EDT | Tornado Warning | PHI | New Castle | 33 min |
| Jun 5, 11:27 PM EDT | Tornado Warning | PHI | New Castle | 33 min |
| Jun 6, 12:42 AM EDT | River Flood Warning | PHI | New Castle | 3 hr |
| Jun 6, 4:27 AM EDT | River Flood Warning | PHI | New Castle | 3 hr |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.