Alert archive / Maryland / Flash Flood Warnings in 2018
Flash Flood Warning 106, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Oct 11, 2018, 10:06 PM EDT for 4 counties in Maryland; Kent County, Delaware. It was in force for 6 hr. 3 reports 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
- Oct 11, 2018, 10:06 PM EDT (02:06 UTC)
- Expired
- Oct 12, 2018, 3:37 AM EDT
- In force
- 6 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Kent County, DE, Caroline County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD
The radar
The Dover AFB radar (KDOX), 59 km from the middle of the area, began a volume at 02:08 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 |
|---|---|---|---|
| Oct 12, 2:14 AM EDT | FLOOD | 1 Nne Cordova, MD | MD 303 AT MD 309 CLOSED DUE TO HIGH WATER. |
| Oct 12, 2:17 AM EDT | FLOOD | 3 Sw Cordova, MD | MD 309 AT RABBIT HILL RD CLOSED DUE TO HIGH WATER. |
| Oct 12, 3:17 AM EDT | FLOOD | 1 W Easton, MD | FLOODING FORCED THE CLOSURE OF STATE HIGHWAY 322 NORTH AT PORT STREET. |
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 00:00Z, 2.1 hours before the alert went out and 122 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.
973
WGUS51 KPHI 120206
FFWPHI
DEC001-MDC011-029-035-041-120600-
/O.NEW.KPHI.FF.W.0106.181012T0206Z-181012T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
1006 PM EDT THU OCT 11 2018
The National Weather Service in Mount Holly NJ has issued a
* Flash Flood Warning for...
Kent County in central Delaware...
Talbot County in eastern Maryland...
Queen Anne's County in northeastern Maryland...
Caroline County in eastern Maryland...
East central Kent County in northeastern Maryland...
* Until 200 AM EDT.
* At 1002 PM EDT, Doppler radar indicated heavy rain across the
warned area. Up to four inches of rain have already fallen across
portions of the advised area. This amount of rainfall is capable
of producing flash flooding.
* Some locations that could experience flooding include...
Dover, Easton, Centerville, Talbot, Smyrna, Denton, Centreville,
Camden, Greensboro, Oakland, Ridgely, Cheswold, St. Michaels,
Church Hill, Oxford, Millington, Sudlersville, Bowers, Goldsboro
and Queen Anne.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 3876 7633 3883 7630 3885 7627 3878 7621
3879 7619 3893 7620 3895 7623 3900 7617
3924 7602 3930 7540 3927 7537 3907 7537
3865 7613 3871 7624 3876 7622 3872 7629
3878 7629 3867 7634 3873 7633 3875 7637
$$
Kruzdlo2 follow-up statements
611
WGUS51 KPHI 120537
FFWPHI
DEC001-MDC011-029-035-041-121000-
/O.EXT.KPHI.FF.W.0106.000000T0000Z-181012T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
137 AM EDT FRI OCT 12 2018
The National Weather Service in Mount Holly NJ has extended the
* Flash Flood Warning for...
Kent County in central Delaware...
Talbot County in eastern Maryland...
Queen Anne's County in northeastern Maryland...
Caroline County in eastern Maryland...
East central Kent County in northeastern Maryland...
* Until 600 AM EDT.
* At 136 AM EDT, Doppler radar indicated moderate to heavy rain
across the warned area. Up to five inches of rain have already
fallen. Flash flooding is already occurring.
* Some locations that could experience flooding include...
Dover, Easton, Centerville, Talbot, Smyrna, Denton, Centreville,
Camden, Greensboro, Oakland, Ridgely, Cheswold, St. Michaels,
Church Hill, Oxford, Millington, Sudlersville, Bowers, Goldsboro
and Queen Anne.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 3876 7633 3883 7630 3885 7627 3878 7621
3879 7619 3893 7620 3895 7623 3900 7617
3924 7602 3930 7540 3927 7537 3907 7537
3865 7613 3871 7624 3876 7622 3872 7629
3878 7629 3867 7634 3873 7633 3875 7637
$$
Kruzdlo189
WGUS71 KPHI 120737
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
337 AM EDT FRI OCT 12 2018
DEC001-MDC011-029-035-041-120747-
/O.CAN.KPHI.FF.W.0106.000000T0000Z-181012T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Kent DE-Talbot MD-Queen Anne's MD-Caroline MD-Kent MD-
337 AM EDT FRI OCT 12 2018
...THE FLASH FLOOD WARNING FOR KENT...TALBOT...QUEEN ANNE'S...
CAROLINE AND EAST CENTRAL KENT COUNTIES IS CANCELLED...
This flash flood warning has been converted to a flood warning.
Three to six inches of rain fell since last evening. It will take
some time to drain.
LAT...LON 3876 7633 3883 7630 3885 7627 3878 7621
3879 7619 3893 7620 3895 7623 3900 7617
3924 7602 3930 7540 3927 7537 3907 7537
3865 7613 3871 7624 3876 7622 3872 7629
3878 7629 3867 7634 3873 7633 3875 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, 11:36 PM EDT | Flash Flood Warning | PHI | Kent, Queen Anne's | 4 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 |
| Oct 11, 11:54 PM EDT | High Wind Warning | PHI | Sussex | 9 hr |
| Oct 12, 11:42 AM EDT | Coastal Flood Advisory | PHI | Sussex | 4 hr |
| Oct 12, 2:46 PM EDT | Areal Flood Warning | PHI | Kent | 7 hr |
Nearby
Flash Flood Warnings in Maryland, 2018Flash Flood Warnings in Delaware, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.