Alert archive / Maryland / Flash Flood Warnings in 2018
Flash Flood Warning 42, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 25, 2018, 6:00 PM EDT for Caroline County, Queen Anne's County, Talbot County, Maryland. 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
- Jul 25, 2018, 6:00 PM EDT (22:00 UTC)
- Expired
- Jul 25, 2018, 9:17 PM EDT
- In force
- 3 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Caroline County, MD, Queen Anne's County, MD, Talbot County, MD
The radar
The Dover AFB radar (KDOX), 52 km from the middle of the area, began a volume at 22:07 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 12:00Z, 10.0 hours before the alert went out and 106 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
- 161 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 730 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -41 m²/s²
- 0-3 km storm-relative helicity
- -26 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
988
WGUS51 KPHI 252200
FFWPHI
MDC011-035-041-260200-
/O.NEW.KPHI.FF.W.0042.180725T2200Z-180726T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
600 PM EDT WED JUL 25 2018
The National Weather Service in Mount Holly NJ has issued a
* Flash Flood Warning for...
Talbot County in eastern Maryland...
South central Queen Anne's County in northeastern Maryland...
Southwestern Caroline County in eastern Maryland...
* Until 1000 PM EDT.
* At 559 PM EDT, Doppler radar indicated heavy rain across the warned
area. Up to two inches of rain have already fallen. Flash flooding
is expected to begin shortly in the areas of heaviest rain.
* Some locations that could experience flooding include...
Easton, Ridgely, Trappe, Preston, Queen Anne, Tanyard, Harmony,
Starr, Skipton, Jumptown, Matthews, Choptank, Wye Mills, Hambleton,
Griffin, Windyhill, Cordova, Queenstown and Hillsboro.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.
&&
LAT...LON 3861 7608 3863 7608 3863 7611 3898 7619
3900 7617 3901 7618 3903 7589 3870 7583
3870 7590 3869 7590 3866 7596 3862 7598
3860 7605
$$
Robertson2 follow-up statements
848
WGUS71 KPHI 252253
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
653 PM EDT WED JUL 25 2018
MDC011-035-041-260200-
/O.CON.KPHI.FF.W.0042.000000T0000Z-180726T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Talbot MD-Queen Anne's MD-Caroline MD-
653 PM EDT WED JUL 25 2018
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1000 PM EDT FOR
TALBOT...SOUTH CENTRAL QUEEN ANNE'S AND SOUTHWESTERN CAROLINE
COUNTIES...
At 652 PM EDT, Doppler radar indicated moderate to heavy rain across
the warned area. Up to two inches of rain have already fallen with
additional rainfall expected. While the rain rates have dropped off,
this additional rainfall is expected to continue the threat for
flash flooding.
Some locations that could experience flooding include...
Easton, Ridgely, Trappe, Preston, Queen Anne, Tanyard, Harmony,
Starr, Skipton, Jumptown, Matthews, Choptank, Wye Mills, Hambleton,
Griffin, Windyhill, Cordova, Queenstown and Hillsboro.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3861 7608 3863 7608 3863 7611 3898 7619
3900 7617 3901 7618 3903 7589 3870 7583
3870 7590 3869 7590 3866 7596 3862 7598
3860 7605
$$
Robertson074
WGUS71 KPHI 260117
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
917 PM EDT WED JUL 25 2018
MDC011-035-041-260126-
/O.CAN.KPHI.FF.W.0042.000000T0000Z-180726T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Talbot MD-Queen Anne's MD-Caroline MD-
917 PM EDT WED JUL 25 2018
...THE FLASH FLOOD WARNING FOR TALBOT...SOUTH CENTRAL QUEEN ANNE'S
AND SOUTHWESTERN CAROLINE COUNTIES IS CANCELLED...
The heavy rain has ended for now across the area, and flash flooding
is no longer expected to pose a threat. However, additional heavy
rain is possible during this evening and overnight.
LAT...LON 3861 7608 3863 7608 3863 7611 3898 7619
3900 7617 3901 7618 3903 7589 3870 7583
3870 7590 3869 7590 3866 7596 3862 7598
3860 7605
$$
RobertsonThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 25, 1:57 PM EDT | Special Weather Statement | PHI | Caroline | 33 min |
| Jul 25, 2:29 PM EDT | Special Weather Statement | PHI | Caroline | 46 min |
| Jul 25, 3:16 PM EDT | Areal Flood Advisory | PHI | Caroline, Cecil, Kent, Queen Anne's | 4 hr |
| Jul 25, 4:34 PM EDT | Areal Flood Advisory | PHI | Cecil | 2 hr |
| Jul 25, 5:17 PM EDT | Areal Flood Advisory | PHI | Caroline, Kent, Queen Anne's, Talbot | 4 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.