Alert archive / Maryland / Flash Flood Warnings in 2018
Flash Flood Warning 107, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Oct 11, 2018, 11:36 PM EDT for Kent County, Queen Anne's County, Maryland. 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
- Oct 11, 2018, 11:36 PM EDT (03:36 UTC)
- Expired
- Oct 12, 2018, 3:30 AM EDT
- In force
- 4 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Kent County, MD, Queen Anne's County, MD
The radar
The Dover AFB radar (KDOX), 74 km from the middle of the area, began a volume at 03:34 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
Wallops Is Stn, VA (KWAL), launched 00:00Z, 3.6 hours before the alert went out and 141 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
- 959 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 634 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 212 m²/s²
- 0-3 km storm-relative helicity
- 200 m²/s²
- Significant tornado parameter
- 1.1
- Supercell composite
- 4.3
The text
As transmitted.
259
WGUS51 KPHI 120336
FFWPHI
MDC029-035-120730-
/O.NEW.KPHI.FF.W.0107.181012T0336Z-181012T0730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
1136 PM EDT THU OCT 11 2018
The National Weather Service in Mount Holly NJ has issued a
* Flash Flood Warning for...
Central Queen Anne's County in northeastern Maryland...
Southwestern Kent County in northeastern Maryland...
* Until 330 AM EDT.
* At 1134 PM EDT, Doppler radar indicated heavy rain across the
warned area. Up to three inches of rain have already fallen. This
amount of rainfall is capable of producing flash flooding.
* Some locations that could experience flooding include...
Chestertown, Rock Hall, Chester, Overton, Old Town, Stevensville,
Langford, Stevensville South, Kingstown and Dominion.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 3892 7637 3901 7632 3903 7631 3898 7628
3897 7622 3900 7617 3901 7621 3913 7625
3915 7628 3922 7624 3924 7600 3900 7616
3892 7626 3894 7628 3890 7629 3891 7631
3896 7631 3884 7637
$$
Kruzdlo1 follow-up statement
617
WGUS71 KPHI 120721
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
321 AM EDT FRI OCT 12 2018
MDC029-035-120730-
/O.EXP.KPHI.FF.W.0107.000000T0000Z-181012T0730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Queen Anne's MD-Kent MD-
321 AM EDT FRI OCT 12 2018
...THE FLASH FLOOD WARNING FOR CENTRAL QUEEN ANNE'S AND SOUTHWESTERN
KENT COUNTIES WILL EXPIRE AT 330 AM EDT...
The heavy rain has ended. The flash flood warning has been allowed
to expire. Please continue to heed any remaining road closures.
LAT...LON 3892 7637 3901 7632 3903 7631 3898 7628
3897 7622 3900 7617 3901 7621 3913 7625
3915 7628 3922 7624 3924 7600 3900 7616
3892 7626 3894 7628 3890 7629 3891 7631
3896 7631 3884 7637
$$
KruzdloThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 11, 8:27 PM EDT | Areal Flood Advisory | PHI | Cecil, Kent, Queen Anne's | 8 hr |
| Oct 11, 10:06 PM EDT | Flash Flood Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 6 hr |
| Oct 11, 11:47 PM EDT | Flash Flood Warning | PHI | Caroline, Talbot | 4 hr |
| Oct 12, 12:08 AM EDT | Flash Flood Warning | PHI | Kent, Queen Anne's | 4 hr |
| Oct 12, 3:28 AM EDT | Areal Flood Warning | PHI | Caroline, Talbot | 6 hr |
| Oct 12, 3:36 AM EDT | Areal Flood Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 6 hr |
| Oct 12, 3:46 AM EDT | Areal Flood Warning | PHI | Kent, Queen Anne's | 7 hr |
Nearby
Flash Flood Warnings in Maryland, 2018Every flash flood warning in 2018
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.