Alert archive / New Jersey / Flash Flood Watches in 2009
Flash Flood Watch 1, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood watch at Jun 9, 2009, 1:49 PM EDT for 4 states. It was in force for 5 hr.
The area
The counties it named.
The facts
- Issued
- Jun 9, 2009, 1:49 PM EDT (17:49 UTC)
- Expired
- Jun 9, 2009, 6:43 PM EDT
- In force
- 5 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Flood severity
- None
Counties New Castle County, DE, Cecil County, MD, Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Morris County, NJ, Salem County, NJ, Somerset County, NJ, Delaware County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 54 km from the middle of the area, began a volume at 17:50 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
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 5.8 hours before the alert went out and 112 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
- 1272 J/kg
- Mixed-layer CIN
- -67 J/kg
- Mixed-layer LCL
- 804 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 87 m²/s²
- 0-3 km storm-relative helicity
- 108 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 1.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS61 KPHI 091749 FFAPHI URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 149 PM EDT TUE JUN 9 2009 DEZ001-MDZ008-NJZ008>010-012-015>019-PAZ067>071-100400- /O.NEW.KPHI.FF.A.0001.090609T1749Z-090610T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ NEW CASTLE-CECIL-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-MERCER-SALEM- GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-CHESTER-MONTGOMERY- BUCKS-DELAWARE-PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...ELKTON...MORRISTOWN... FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...TRENTON...PENNSVILLE... GLASSBORO...CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY... WEST CHESTER...NORRISTOWN...DOYLESTOWN...MEDIA...PHILADELPHIA 149 PM EDT TUE JUN 9 2009 ...FLASH FLOOD WATCH IN EFFECT UNTIL MIDNIGHT EDT TONIGHT... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A * FLASH FLOOD WATCH FOR PORTIONS OF NORTHERN DELAWARE... NORTHEAST MARYLAND...NEW JERSEY AND SOUTHEAST PENNSYLVANIA... INCLUDING THE FOLLOWING AREAS...IN NORTHERN DELAWARE...NEW CASTLE. IN NORTHEAST MARYLAND...CECIL. IN NEW JERSEY... CAMDEN...GLOUCESTER...HUNTERDON...MERCER...MIDDLESEX... MORRIS...NORTHWESTERN BURLINGTON...SALEM AND SOMERSET. IN SOUTHEAST PENNSYLVANIA...BUCKS...CHESTER...DELAWARE... MONTGOMERY AND PHILADELPHIA. * UNTIL MIDNIGHT EDT TONIGHT * LIKE THIS MORNING, THUNDERSTORMS THIS AFTERNOON AND EVENING ARE EXPECTED TO PRODUCE HEAVY RAIN. THE HEAVY RAIN COULD CAUSE WATER TO POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALLER STREAMS. MAJOR RIVERS SUCH AS THE SCHUYLKILL AND DELAWARE ARE NOT EXPECTED TO FLOOD. * IF YOU ENCOUNTER ROAD FLOODING, TURN AROUND IF POSSIBLE. JUST ONE FOOT OF FLOWING WATER IS POWERFUL ENOUGH TO SWEEP YOU OR YOUR VEHICLE OFF THE ROAD. THOSE LIVING IN AREAS PRONE TO FLOODING SHOULD BE PREPARED TO TAKE ACTION SHOULD FLOODING DEVELOP. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. && $$ KRUZDLO
1 follow-up statement
000 WGUS61 KPHI 092243 FFAPHI FLOOD WATCH NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 643 PM EDT TUE JUN 9 2009 DEZ001-MDZ008-NJZ008>010-012-015>019-PAZ067>071-092345- /O.CAN.KPHI.FF.A.0001.000000T0000Z-090610T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ NEW CASTLE-CECIL-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-MERCER-SALEM- GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-CHESTER-MONTGOMERY- BUCKS-DELAWARE-PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...ELKTON...MORRISTOWN... FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...TRENTON...PENNSVILLE... GLASSBORO...CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY... WEST CHESTER...NORRISTOWN...DOYLESTOWN...MEDIA...PHILADELPHIA 643 PM EDT TUE JUN 9 2009 ...FLASH FLOOD WATCH IS CANCELLED... THE FLASH FLOOD WATCH FOR PORTIONS OF NORTHERN DELAWARE... NORTHEAST MARYLAND...NEW JERSEY AND SOUTHEAST PENNSYLVANIA HAS BEEN CANCELLED. HEAVY RAIN FELL IN PARTS OF SOUTHEAST PENNSYLVANIA AND NORTHEAST MARYLAND DURING THE EVENING. HOWEVER, ANY HEAVY RAIN HAS MOVED OUT OF THE AREA. $$ RNS
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 9, 12:48 AM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex, Warren | 42 min |
| Jun 9, 2:20 AM EDT | Areal Flood Advisory | PHI | Morris | 100 min |
| Jun 9, 4:17 AM EDT | Dense Fog Advisory | PHI | Atlantic, Burlington, Camden, Hunterdon, Mercer, Middlesex and 3 more | 5 hr |
| Jun 9, 8:00 AM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester, Salem | 60 min |
| Jun 9, 8:06 AM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden | 54 min |
| Jun 9, 8:20 AM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Gloucester | 3 hr |
| Jun 9, 8:30 AM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cumberland, Gloucester, Salem | 60 min |
| Jun 9, 8:42 AM EDT | Areal Flood Advisory | PHI | Atlantic, Burlington, Camden, Gloucester, Mercer, Middlesex and 4 more | 3 hr |
| Jun 9, 8:43 AM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Gloucester | 62 min |
| Jun 9, 8:47 AM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cape May, Cumberland | 70 min |
| Jun 9, 9:09 AM EDT | Areal Flood Advisory | PHI | Atlantic, Cape May, Cumberland | 3 hr |
| Jun 9, 9:21 AM EDT | Special Marine Warning | PHI | 54 min | |
| Jun 9, 5:38 AM EDT | Severe Thunderstorm Warning | PHI | Berks | 67 min |
| Jun 9, 7:20 AM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 55 min |
| Jun 9, 9:56 AM EDT | Flash Flood Warning | PHI | Chester | 105 min |
| Jun 9, 2:20 PM EDT | Flash Flood Warning | PHI | Berks, Chester | 3 hr |
| Jun 9, 2:24 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester, Montgomery | 66 min |
| Jun 9, 2:59 PM EDT | Tornado Warning | PHI | Chester | 32 min |
| Jun 9, 3:08 PM EDT | Tornado Warning | PHI | Chester | 28 min |
| Jun 9, 3:14 PM EDT | Tornado Warning | PHI | Chester | 46 min |
| Jun 9, 3:29 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 61 min |
| Jun 9, 4:19 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent, Queen Anne's | 56 min |
| Jun 9, 5:13 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 92 min |
| Jun 9, 5:19 PM EDT | Areal Flood Warning | PHI | Cecil | 71 min |
| Jun 9, 8:31 AM EDT | Severe Thunderstorm Warning | PHI | Sussex | 59 min |
| Jun 9, 6:57 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 39 min |
Nearby
Flash Flood Watches in New Jersey, 2009Flash Flood Watches in Pennsylvania, 2009Flash Flood Watches in Maryland, 2009Every flash flood watch in 2009
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.