Alert archive / Maryland / Flash Flood Warnings in 2024
Flash Flood Warning 48, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 7, 2024, 5:59 PM EDT for Kent County, Sussex County, Delaware; Caroline County, Queen Anne's County, Talbot County, Maryland. It was in force for 115 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 7, 2024, 5:59 PM EDT (21:59 UTC)
- Expired
- Aug 7, 2024, 7:54 PM EDT
- In force
- 115 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Kent County, DE, Sussex County, DE, Caroline County, MD, Queen Anne's County, MD, Talbot County, MD
The radar
The Dover AFB radar (KDOX), 62 km from the middle of the area, began a volume at 22:00 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, 10.0 hours before the alert went out and 108 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
- 485 J/kg
- Mixed-layer CIN
- -40 J/kg
- Mixed-layer LCL
- 583 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- -8 m²/s²
- 0-3 km storm-relative helicity
- 26 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
405
WGUS51 KPHI 072159
FFWPHI
DEC001-005-MDC011-035-041-080130-
/O.NEW.KPHI.FF.W.0048.240807T2159Z-240808T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
559 PM EDT Wed Aug 7 2024
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
Southwestern Kent County in central Delaware...
West Central Sussex County in southern Delaware...
Southern Caroline County in eastern Maryland...
Northern Talbot County in eastern Maryland...
Southwestern Queen Anne's County in northeastern Maryland...
* Until 930 PM EDT.
* At 559 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 3 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...
Easton, Talbot, Denton, Federalsburg, St. Michaels, Preston, Queen
Anne, Cordova, Matthews, Tanyard, Skipton and Griffin.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
&&
LAT...LON 3885 7627 3879 7619 3894 7621 3896 7625
3893 7625 3887 7637 3903 7631 3897 7625
3900 7617 3883 7558 3868 7579 3870 7590
3865 7596 3873 7623 3877 7624 3877 7638
FLASH FLOOD...RADAR INDICATED
$$
Robertson2 follow-up statements
321
WGUS71 KPHI 072253
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
653 PM EDT Wed Aug 7 2024
DEC001-072303-
/O.CAN.KPHI.FF.W.0048.000000T0000Z-240808T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Kent DE-
653 PM EDT Wed Aug 7 2024
...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHWESTERN KENT COUNTY...
Flooding is no longer expected to pose a threat. Please continue to
heed remaining road closures.
&&
LAT...LON 3878 7632 3885 7627 3879 7619 3895 7621
3896 7624 3891 7630 3893 7631 3895 7631
3887 7637 3900 7632 3891 7608 3883 7558
3868 7579 3870 7590 3865 7596 3873 7623
3877 7624 3877 7638
$$
DEC005-MDC011-035-041-080130-
/O.CON.KPHI.FF.W.0048.000000T0000Z-240808T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sussex DE-Caroline MD-Queen Anne's MD-Talbot MD-
653 PM EDT Wed Aug 7 2024
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 PM EDT THIS
EVENING FOR WEST CENTRAL SUSSEX, SOUTHERN CAROLINE, NORTHERN TALBOT
AND SOUTHWESTERN QUEEN ANNE'S COUNTIES...
At 653 PM EDT, Doppler radar indicated thunderstorms producing heavy
rain across portions the warned area. Between 2 and 3 inches of rain
have fallen. Although the rain is beginning to lighten up in some
areas, there remains the potential for flooding across parts of the
warned area.
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...
Easton, Talbot, Denton, Federalsburg, St. Michaels, Preston,
Matthews, Tanyard, Cordova, Griffin, Harmony and Skipton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
&&
LAT...LON 3878 7632 3885 7627 3879 7619 3895 7621
3896 7624 3891 7630 3893 7631 3895 7631
3887 7637 3900 7632 3891 7608 3883 7558
3868 7579 3870 7590 3865 7596 3873 7623
3877 7624 3877 7638
FLASH FLOOD...RADAR INDICATED
$$
Robertson362
WGUS71 KPHI 072354
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
754 PM EDT Wed Aug 7 2024
DEC005-MDC011-035-041-080004-
/O.CAN.KPHI.FF.W.0048.000000T0000Z-240808T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sussex DE-Caroline MD-Queen Anne's MD-Talbot MD-
754 PM EDT Wed Aug 7 2024
...FLASH FLOOD WARNING IS CANCELLED FOR WEST CENTRAL SUSSEX,
SOUTHERN CAROLINE, NORTHERN TALBOT AND SOUTHWESTERN QUEEN ANNE'S
COUNTIES...
The heavy rain has ended, and flood waters are receding. Flooding is
no longer expected to pose a threat. Please continue to heed
remaining road closures.
&&
LAT...LON 3878 7632 3885 7627 3879 7619 3895 7621
3896 7624 3891 7630 3893 7631 3895 7631
3887 7637 3900 7632 3891 7608 3883 7558
3868 7579 3870 7590 3865 7596 3873 7623
3877 7624 3877 7638
$$
RobertsonThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 3:02 PM EDT | Flash Flood Warning | PHI | Kent, Sussex | 3 hr |
| Aug 7, 4:08 PM EDT | Flash Flood Warning | PHI | Sussex | 3 hr |
Nearby
Flash Flood Warnings in Maryland, 2024Flash 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.