Alert archive / New Jersey / Flood Watches in 2009
Flood Watch 2, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flood watch at Apr 19, 2009, 2:36 PM EDT for 4 states. It took effect at Apr 20, 2009, 12:00 PM EDT. It was in force for 65 min.
The area
The counties it named.
The facts
- Issued
- Apr 19, 2009, 2:36 PM EDT (18:36 UTC)
- In effect from
- Apr 20, 2009, 12:00 PM EDT
- Expired
- Apr 20, 2009, 1:05 PM EDT
- In force
- 65 min
- 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, Monmouth County, NJ, Morris County, NJ, Ocean County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ, Delaware County, PA, Northampton County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 54 km from the middle of the area, began a volume at 18:35 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
Brookhaven, NY (KOKX), launched 12:00Z, 6.6 hours before the alert went out and 186 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
- 783 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- -85 m²/s²
- 0-3 km storm-relative helicity
- 37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS61 KPHI 191836 FFAPHI URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 236 PM EDT SUN APR 19 2009 NJZ001-007>010-012>015-019-020-026-PAZ062-069-201000- /O.NEW.KPHI.FA.A.0002.090420T1600Z-090421T1600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX- WESTERN MONMOUTH-EASTERN MONMOUTH-MERCER-NORTHWESTERN BURLINGTON- OCEAN-COASTAL OCEAN-NORTHAMPTON-BUCKS- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...FREEHOLD...SANDY HOOK... TRENTON...MOORESTOWN...MOUNT HOLLY...JACKSON... LONG BEACH ISLAND...BETHLEHEM...EASTON...DOYLESTOWN 236 PM EDT SUN APR 19 2009 ...FLOOD WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH TUESDAY MORNING... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A * FLOOD WATCH FOR PORTIONS OF NEW JERSEY AND PENNSYLVANIA... INCLUDING THE FOLLOWING AREAS...IN NEW JERSEY...COASTAL OCEAN...EASTERN MONMOUTH...HUNTERDON...MERCER...MIDDLESEX... MORRIS...NORTHWESTERN BURLINGTON...OCEAN...SOMERSET...SUSSEX... WARREN AND WESTERN MONMOUTH. IN PENNSYLVANIA...BUCKS AND NORTHAMPTON. * FROM MONDAY AFTERNOON THROUGH TUESDAY MORNING * A MOIST AND FAIRLY POTENT COMPLEX LOW PRESSURE SYSTEM IS EXPECTED TO BRING RAIN TO THE REGION DURING THE FIRST PART OF THE WEEK, WITH THE BULK OF THE RAIN FALLING FROM MONDAY THROUGH MONDAY NIGHT. PRESENT PRECIPITATION FORECASTS CALL FOR UPWARDS OF 1.5 INCHES OF RAIN DURING THAT TIME PERIOD, AND ANY THUNDERSTORMS THAT OCCUR COULD MAKE FOR LOCALLY HIGHER AMOUNTS. SUCH A RAIN EVENT MAY CAUSE FLOODING OF CREEKS, STREAMS, URBAN AREAS AND POOR DRAINAGE AREAS. ALONG THE NORTHERN NEW JERSEY COASTLINE, WINDS AND STRONG WAVE ACTION COULD ACT ALONG WITH RAINFALL TO INCREASE THE FLOODING THREAT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLOOD WATCH MEANS THERE IS A POTENTIAL FOR FLOODING BASED ON CURRENT FORECASTS. YOU SHOULD MONITOR LATER FORECASTS AND BE ALERT FOR POSSIBLE FLOOD WARNINGS. THOSE LIVING IN AREAS PRONE TO FLOODING SHOULD BE PREPARED TO TAKE ACTION SHOULD FLOODING DEVELOP. && $$ EBERWINE/DELISI
3 follow-up statements
000 WGUS61 KPHI 191938 FFAPHI URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 338 PM EDT SUN APR 19 2009 DEZ001-MDZ008-NJZ017-018-027-PAZ067-068-070-071-201000- /O.EXA.KPHI.FA.A.0002.090420T1600Z-090421T1600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ NEW CASTLE-CECIL-GLOUCESTER-CAMDEN-SOUTHEASTERN BURLINGTON- CHESTER-MONTGOMERY-DELAWARE-PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...ELKTON...GLASSBORO... CAMDEN...CHERRY HILL...WHARTON STATE FOREST...WEST CHESTER... NORRISTOWN...MEDIA...PHILADELPHIA 338 PM EDT SUN APR 19 2009 ...FLOOD WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH TUESDAY MORNING... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS EXPANDED THE * FLOOD WATCH TO INCLUDE PORTIONS OF NORTHERN DELAWARE... NORTHEAST MARYLAND...SOUTHERN NEW JERSEY AND SOUTHEAST PENNSYLVANIA...INCLUDING THE FOLLOWING AREAS...IN NORTHERN DELAWARE...NEW CASTLE. IN NORTHEAST MARYLAND...CECIL. IN SOUTHERN NEW JERSEY...CAMDEN...GLOUCESTER AND SOUTHEASTERN BURLINGTON. IN SOUTHEAST PENNSYLVANIA...CHESTER...DELAWARE... MONTGOMERY AND PHILADELPHIA. * FROM MONDAY AFTERNOON THROUGH TUESDAY MORNING * A MOIST AND FAIRLY POTENT COMPLEX LOW PRESSURE SYSTEM IS EXPECTED TO BRING RAIN TO THE REGION DURING THE FIRST PART OF THE WEEK, WITH THE BULK OF THE RAIN FALLING FROM MONDAY THROUGH MONDAY NIGHT. UPWARDS OF 1.5 INCHES OF RAIN IS POSSIBLE DURING THAT TIME PERIOD, AND ANY THUNDERSTORMS THAT OCCUR COULD MAKE FOR LOCALLY HIGHER AMOUNTS. SUCH A RAIN EVENT MAY CAUSE FLOODING OF CREEKS, STREAMS, URBAN AREAS AND POOR DRAINAGE AREAS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLOOD WATCH MEANS THERE IS A POTENTIAL FOR FLOODING BASED ON CURRENT FORECASTS. YOU SHOULD MONITOR LATER FORECASTS AND BE ALERT FOR POSSIBLE FLOOD WARNINGS. THOSE LIVING IN AREAS PRONE TO FLOODING SHOULD BE PREPARED TO TAKE ACTION SHOULD FLOODING DEVELOP. && $$ NJZ001-007>010-012>015-019-020-026-PAZ062-069-201000- /O.CON.KPHI.FA.A.0002.090420T1600Z-090421T1600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX- WESTERN MONMOUTH-EASTERN MONMOUTH-MERCER-NORTHWESTERN BURLINGTON- OCEAN-COASTAL OCEAN-NORTHAMPTON-BUCKS- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...FREEHOLD...SANDY HOOK... TRENTON...MOORESTOWN...MOUNT HOLLY...JACKSON... LONG BEACH ISLAND...BETHLEHEM...EASTON...DOYLESTOWN 338 PM EDT SUN APR 19 2009 ...FLOOD WATCH REMAINS IN EFFECT FROM MONDAY AFTERNOON THROUGH TUESDAY MORNING... THE FLOOD WATCH CONTINUES FOR * PORTIONS OF NEW JERSEY AND PENNSYLVANIA...INCLUDING THE FOLLOWING AREAS...IN NEW JERSEY...COASTAL OCEAN...EASTERN MONMOUTH...HUNTERDON...MERCER...MIDDLESEX...MORRIS... NORTHWESTERN BURLINGTON...OCEAN...SOMERSET...SUSSEX...WARREN AND WESTERN MONMOUTH. IN PENNSYLVANIA...BUCKS AND NORTHAMPTON. * FROM MONDAY AFTERNOON THROUGH TUESDAY MORNING * A MOIST AND FAIRLY POTENT COMPLEX LOW PRESSURE SYSTEM IS EXPECTED TO BRING RAIN TO THE REGION DURING THE FIRST PART OF THE WEEK, WITH THE BULK OF THE RAIN FALLING FROM MONDAY THROUGH MONDAY NIGHT. UPWARDS OF 1.5 INCHES OF RAIN IS POSSIBLE DURING THAT TIME PERIOD, AND ANY THUNDERSTORMS THAT OCCUR COULD MAKE FOR LOCALLY HIGHER AMOUNTS. SUCH A RAIN EVENT MAY CAUSE FLOODING OF CREEKS, STREAMS, URBAN AREAS AND POOR DRAINAGE AREAS. ALONG THE NORTHERN NEW JERSEY COASTLINE, WINDS AND STRONG WAVE ACTION COULD ACT ALONG WITH RAINFALL TO INCREASE THE FLOODING THREAT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLOOD WATCH MEANS THERE IS A POTENTIAL FOR FLOODING BASED ON CURRENT FORECASTS. YOU SHOULD MONITOR LATER FORECASTS AND BE ALERT FOR POSSIBLE FLOOD WARNINGS. THOSE LIVING IN AREAS PRONE TO FLOODING SHOULD BE PREPARED TO TAKE ACTION SHOULD FLOODING DEVELOP. && $$ EBERWINE/DELISI
000 WGUS61 KPHI 200752 FFAPHI URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 352 AM EDT MON APR 20 2009 DEZ001-MDZ008-NJZ001-007>010-012>015-017>020-026-027-PAZ062- 067>071-202100- /O.EXT.KPHI.FA.A.0002.090420T1600Z-090421T1000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ NEW CASTLE-CECIL-SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET- MIDDLESEX-WESTERN MONMOUTH-EASTERN MONMOUTH-MERCER-GLOUCESTER- CAMDEN-NORTHWESTERN BURLINGTON-OCEAN-COASTAL OCEAN- SOUTHEASTERN BURLINGTON-NORTHAMPTON-CHESTER-MONTGOMERY-BUCKS- DELAWARE-PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...ELKTON...NEWTON... WASHINGTON...MORRISTOWN...FLEMINGTON...SOMERVILLE... NEW BRUNSWICK...FREEHOLD...SANDY HOOK...TRENTON...GLASSBORO... CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY...JACKSON... LONG BEACH ISLAND...WHARTON STATE FOREST...BETHLEHEM...EASTON... WEST CHESTER...NORRISTOWN...DOYLESTOWN...MEDIA...PHILADELPHIA 352 AM EDT MON APR 20 2009 ...FLOOD WATCH NOW IN EFFECT FROM NOON EDT TODAY THROUGH LATE TONIGHT... THE FLOOD WATCH IS NOW IN EFFECT FOR * PORTIONS OF NORTHERN DELAWARE...NORTHEAST MARYLAND...NEW JERSEY AND PENNSYLVANIA...INCLUDING THE FOLLOWING AREAS...IN NORTHERN DELAWARE...NEW CASTLE. IN NORTHEAST MARYLAND...CECIL. IN NEW JERSEY...CAMDEN...COASTAL OCEAN...EASTERN MONMOUTH... GLOUCESTER...HUNTERDON...MERCER...MIDDLESEX...MORRIS... NORTHWESTERN BURLINGTON...OCEAN...SOMERSET...SOUTHEASTERN BURLINGTON...SUSSEX...WARREN AND WESTERN MONMOUTH. IN PENNSYLVANIA...BUCKS...CHESTER...DELAWARE...MONTGOMERY... NORTHAMPTON AND PHILADELPHIA. * FROM NOON EDT TODAY THROUGH LATE TONIGHT * A MOIST AND FAIRLY POTENT COMPLEX LOW PRESSURE SYSTEM WILL BRING HEAVIER RAIN TO THE REGION TODAY AND TONIGHT. THE HEAVIEST RAIN SHOULD OCCUR FROM THIS AFTERNOON UNTIL AROUND MIDNIGHT TONIGHT. EVENT TOTALS SHOULD AVERAGE BETWEEN 1.0 AND 1.5 INCHES. ANY THUNDERSTORMS THAT DO OCCUR WOULD CAUSE LOCALLY HIGHER AMOUNTS. SUCH A RAIN EVENT MAY CAUSE FLOODING OF CREEKS... STREAMS... URBAN AREAS AND POOR DRAINAGE AREAS. ALONG THE NORTHERN NEW JERSEY COASTLINE... WINDS AND STRONG WAVE ACTION COULD ACT ALONG WITH RAINFALL TO INCREASE THE FLOODING THREAT. CREEKS THAT ARE MOST SUSCEPTIBLE TO FLOODING INCLUDE, BUT ARE NOT LIMITED TO, THE CHRISTINA AND WHITE CLAY IN DELAWARE, THE ASSUNPINK IN NEW JERSEY AND THE NESHAMINY, CHESTER AND EAST BRANCH OF THE BRANDYWINE IN PENNSYLVANIA. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLOOD WATCH MEANS THERE IS A POTENTIAL FOR FLOODING BASED ON CURRENT FORECASTS. PLEASE MONITOR LATER FORECASTS AND BE ALERT FOR POSSIBLE FLOOD WARNINGS. THOSE LIVING IN AREAS PRONE TO FLOODING SHOULD BE PREPARED TO TAKE ACTION SHOULD FLOODING DEVELOP. && $$ GIGI
000 WGUS61 KPHI 201705 FFAPHI FLOOD WATCH NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 105 PM EDT MON APR 20 2009 DEZ001-MDZ008-NJZ001-007>010-012>015-017>020-026-027-PAZ062- 067>071-201815- /O.CAN.KPHI.FA.A.0002.000000T0000Z-090421T1000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ NEW CASTLE-CECIL-SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET- MIDDLESEX-WESTERN MONMOUTH-EASTERN MONMOUTH-MERCER-GLOUCESTER- CAMDEN-NORTHWESTERN BURLINGTON-OCEAN-COASTAL OCEAN- SOUTHEASTERN BURLINGTON-NORTHAMPTON-CHESTER-MONTGOMERY-BUCKS- DELAWARE-PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...ELKTON...NEWTON... WASHINGTON...MORRISTOWN...FLEMINGTON...SOMERVILLE... NEW BRUNSWICK...FREEHOLD...SANDY HOOK...TRENTON...GLASSBORO... CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY...JACKSON... LONG BEACH ISLAND...WHARTON STATE FOREST...BETHLEHEM...EASTON... WEST CHESTER...NORRISTOWN...DOYLESTOWN...MEDIA...PHILADELPHIA 105 PM EDT MON APR 20 2009 ...FLOOD WATCH IS CANCELLED... THE FLOOD WATCH FOR PORTIONS OF NORTHERN DELAWARE...NORTHEAST MARYLAND...NEW JERSEY AND PENNSYLVANIA HAS BEEN CANCELLED. ALTHOUGH RAIN IS STILL EXPECTED INTO TONIGHT, HEAVY RAIN CAPABLE OF CAUSING FLOODING IS NO LONGER ANTICIPATED. $$ RNS
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 19, 4:10 AM EDT | Gale Watch | PHI | 12 hr | |
| Apr 19, 4:10 AM EDT | Small Craft Advisory | PHI | 29 hr | |
| Apr 19, 3:45 PM EDT | Gale Warning | PHI | 28 hr |
Nearby
Flood Watches in New Jersey, 2009Flood Watches in Pennsylvania, 2009Flood Watches in Maryland, 2009Every 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.