Alert archive / Maryland / Flash Flood Warnings in 2015
Flash Flood Warning 20, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jun 27, 2015, 7:42 PM EDT for Cecil County, Kent County, Queen Anne's County, Maryland. It was in force for 4 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
- Jun 27, 2015, 7:42 PM EDT (23:42 UTC)
- Expired
- Jun 27, 2015, 11:45 PM 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), 69 km from the middle of the area, began a volume at 23:44 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 |
|---|---|---|---|
| Jun 27, 7:45 PM EDT | FLASH FLOOD | 1 W Newmans Corner, MD | HIGH WATER ON SEVERAL ROADS. JOHN POWELL RD NORTH OF CHURCH HILL RD WAS WASHED OUT. |
| Jun 27, 8:15 PM EDT | FLASH FLOOD | 1 E Indian Acres, MD | FLOODING ACROSS INTERSECTION OF SANDY BOTTOM RD AND KNIGHTS ISLAND RD |
| Jun 27, 9:19 PM EDT | HEAVY RAIN 4.09 | Galena, MD |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 11.7 hours before the alert went out and 136 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
- 603 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 153 m²/s²
- 0-3 km storm-relative helicity
- 202 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
502 WGUS51 KPHI 272342 FFWPHI MDC015-029-035-280345- /O.NEW.KPHI.FF.W.0020.150627T2342Z-150628T0345Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 742 PM EDT SAT JUN 27 2015 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTH CENTRAL QUEEN ANNE'S COUNTY IN NORTHEASTERN MARYLAND... NORTHEASTERN KENT COUNTY IN NORTHEASTERN MARYLAND... SOUTH CENTRAL CECIL COUNTY IN NORTHEASTERN MARYLAND... * UNTIL 1145 PM EDT * AT 740 PM EDT...DOPPLER RADAR INDICATED HEAVY RAIN ACROSS THE WARNED AREA. BETWEEN TWO AND FOUR INCHES OF RAIN HAVE ALREADY FALLEN. THIS AMOUNT OF RAIN IN A SHORT PERIOD OF TIME WILL LEAD TO FLASH FLOODING. * SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... CECILTON...KENNEDYVILLE...CRUMPTON...MORGNEC...GALENA AND KINGSTOWN. PRECAUTIONARY/PREPAREDNESS ACTIONS... BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. && LAT...LON 3943 7579 3914 7593 3918 7606 3946 7594 $$ KRUZDLO
1 follow-up statement
830 WGUS71 KPHI 280336 FFSPHI FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1136 PM EDT SAT JUN 27 2015 MDC015-029-035-280345- /O.EXP.KPHI.FF.W.0020.000000T0000Z-150628T0345Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ QUEEN ANNE'S MD-KENT MD-CECIL MD- 1136 PM EDT SAT JUN 27 2015 ...THE FLASH FLOOD WARNING FOR NORTH CENTRAL QUEEN ANNE'S... NORTHEASTERN KENT AND SOUTH CENTRAL CECIL COUNTIES WILL EXPIRE AT 1145 PM EDT... THE FLASH FLOOD WARNING WILL EXPIRE AT 1145 PM. WHILE THE HEAVIEST RAINS HAVE COME TO AN END, SHOWERS WILL PERSIST INTO THE EARLY MORNING HOURS. LAT...LON 3943 7579 3914 7593 3918 7606 3946 7594 $$ KRUZDLO
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 27, 5:21 PM EDT | Areal Flood Advisory | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 4 hr |
| Jun 27, 5:48 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 42 min |
| Jun 27, 5:58 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's | 47 min |
| Jun 27, 6:43 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Cecil, Kent, Queen Anne's | 47 min |
Nearby
Flash Flood Warnings in Maryland, 2015Every flash flood warning in 2015
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.