Alert archive / Maryland / Flash Flood Warnings in 2011
Flash Flood Warning 26, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 14, 2011, 5:03 AM EDT for Cecil County, 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
- Aug 14, 2011, 5:03 AM EDT (09:03 UTC)
- Expired
- Aug 14, 2011, 9:00 AM EDT
- In force
- 4 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Cecil County, MD, Kent County, MD, Queen Anne's County, MD
The radar
The Dover AFB radar (KDOX), 78 km from the middle of the area, began a volume at 09:03 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, 9.1 hours before the alert went out and 121 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 7399 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 28 m²/s²
- 0-3 km storm-relative helicity
- 54 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
681
WGUS51 KPHI 140903
FFWPHI
MDC015-029-035-141300-
/O.NEW.KPHI.FF.W.0026.110814T0903Z-110814T1300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
503 AM EDT SUN AUG 14 2011
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* FLASH FLOOD WARNING FOR...
CECIL COUNTY...
KENT COUNTY...
NORTHERN QUEEN ANNE'S COUNTY...
* UNTIL 900 AM EDT...
* AT 500 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN FROM A LINE OF THUNDERSTORM OVER CECIL...KENT AND
NORTHERN QUEEN ANNE'S COUNTIES.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ELKTON AND
CENTERVILLE.
RAIN AMOUNTS OF 1.5 TO 2.5 INCHES HAVE OCCURRED WITH THIS LINE OF
THUNDERSTORMS...AND ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE
POSSIBLE IN THE WARNED AREA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PLEASE REPORT FLOODING...HAIL OR WIND DAMAGE TO THE NATIONAL WEATHER
SERVICE BY CALLING TOLL FREE...1-877-633-6772.
&&
LAT...LON 3905 7631 3903 7625 3906 7623 3916 7628
3932 7619 3938 7611 3938 7607 3944 7600
3946 7602 3953 7599 3956 7610 3963 7610
3972 7601 3972 7580 3939 7578 3936 7588
3900 7596 3900 7621 3904 7627 3901 7634
$$The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 14, 12:37 AM EDT | Areal Flood Advisory | PHI | Cecil | 3 hr |
| Aug 14, 1:12 AM EDT | Flash Flood Warning | PHI | Cecil | 4 hr |
| Aug 14, 1:51 AM EDT | Areal Flood Advisory | PHI | Caroline, Kent, Queen Anne's, Talbot | 6 hr |
| Aug 14, 2:27 AM EDT | Flash Flood Warning | PHI | Caroline, Kent, Queen Anne's | 4 hr |
| Aug 14, 3:42 AM EDT | Flash Flood Watch | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 25 hr |
| Aug 14, 7:43 AM EDT | Flash Flood Warning | PHI | Kent, Queen Anne's | 4 hr |
| Aug 14, 8:41 AM EDT | Flash Flood Warning | PHI | Cecil, Kent, Queen Anne's | 4 hr |
| Aug 14, 12:16 PM EDT | Areal Flood Warning | PHI | Cecil, Kent | 4 hr |
Nearby
Flash Flood Warnings in Maryland, 2011Every flash flood warning in 2011
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.