Alert archive / New Jersey / Flash Flood Watches in 2012
Flash Flood Watch 4, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood watch at Sep 3, 2012, 3:00 PM EDT for Delaware County, Philadelphia County, Pennsylvania; New Castle County, Delaware; 5 counties in New Jersey. It was in force for 49 hr.
The area
The counties it named.
The facts
- Issued
- Sep 3, 2012, 3:00 PM EDT (19:00 UTC)
- Expired
- Sep 5, 2012, 3:37 PM EDT
- In force
- 49 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Flood severity
- None
Counties New Castle County, DE, Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Mercer County, NJ, Salem County, NJ, Delaware County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 62 km from the middle of the area, began a volume at 19:01 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, 7.0 hours before the alert went out and 214 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
- 1340 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 627 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 6 m²/s²
- 0-3 km storm-relative helicity
- 85 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
160 WGUS61 KPHI 031900 FFAPHI URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 300 PM EDT MON SEP 3 2012 ...TROPICAL RAINS THREATEN TO PRODUCE POCKETS OF FLASH FLOODING AT TIMES INTO EARLY WEDNESDAY... .A WARM FRONT ACROSS DELMARVA WILL BE SLOWLY LIFTING NORTH THROUGH TUESDAY AS LOW PRESSURE MOVES FROM THE LOWER OHIO VALLEY TOWARD NEW YORK STATE. THE LOW SHOULD TRAIL A WEAK COOL FRONT SOUTHWARD INTO THE DELAWARE VALLEY ON WEDNESDAY. POCKETS OF SHORT DURATION EXCESSIVE RAINS ARE PROBABLE IN THIS PATTERN...ESPECIALLY SINCE THE BANDS OF SHOWERS AND EMBEDDED THUNDERSTORMS WILL BE MOVING ONLY VERY SLOWLY NORTHEASTWARD. DEZ001-NJZ015>019-PAZ067>071-040300- /O.NEW.KPHI.FF.A.0004.120903T1900Z-120905T1000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ NEW CASTLE-MERCER-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON- CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...TRENTON...PENNSVILLE... GLASSBORO...CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY... WEST CHESTER...NORRISTOWN...DOYLESTOWN...MEDIA...PHILADELPHIA 300 PM EDT MON SEP 3 2012 ...FLASH FLOOD WATCH IN EFFECT THROUGH LATE TUESDAY NIGHT... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A * FLASH FLOOD WATCH FOR PORTIONS OF NORTHERN DELAWARE...NEW JERSEY AND SOUTHEAST PENNSYLVANIA...INCLUDING THE FOLLOWING AREAS...IN NORTHERN DELAWARE...NEW CASTLE. IN NEW JERSEY... CAMDEN...GLOUCESTER...MERCER...NORTHWESTERN BURLINGTON AND SALEM. IN SOUTHEAST PENNSYLVANIA...BUCKS...CHESTER... DELAWARE...MONTGOMERY AND PHILADELPHIA. * THROUGH LATE TUESDAY NIGHT * GENERAL RAINFALL OF 2 TO 4 INCHES IS EXPECTED BY DAYBREAK WEDNESDAY IN THE INTERSTATE 95 CORRIDOR FROM NEAR TRENTON THROUGH THE PHILADELPHIA METRO AREA INTO NORTHERN DELAWARE. * FOR NOW...THE PRIMARY FLOOD THREAT IS FOR SMALL STREAMS AND POOR DRAINAGE AREAS. BANDS OF HEAVY SHOWERS WITH EMBEDDED THUNDERSTORMS CAN EASILY PRODUCE 1 TO 2 INCHES OF RAIN IN AN HOURS TIME. IF A BAND OF HEAVY SHOWERS LINGERS...EXCESSIVE RAINFALL WOULD RESULT IN FLOODING OF SMALL STREAMS AND AND POOR DRAINAGE AREAS. * THE HEAVY SHOWERS AND ISOLATED EMBEDDED THUNDERSTORMS MOVING NORTHWARD THROUGH THE AREA THIS AFTERNOON AND EVENING SHOULD QUIT FOR A TIME BUT THEN MAY START AGAIN BY DAYBREAK. THE LARGER SCALE OUTBREAK OF HEAVY RAINS SHOULD DEVELOP SOMETIME TUESDAY AFTERNOON AND LAST INTERMITTENTLY INTO WEDNESDAY MORNING AS A WEAK FRONT MOVES EASTWARD THROUGH PENNSYLVANIA. * THERE ALREADY HAVE BEEN ABOUT REPORTS OF MORE THAN 3 INCHES OF RAIN TODAY IN PARTS OF SOUTHEAST PENNSYLVANIA AND NORTHERN DELAWARE. THIS RESULTED IN ISOLATED FLOODING OF SMALL STREAMS AND POOR DRAINAGE AREAS. LARGER SCALE FLOOD EVENTS ARE POSSIBLE BY WEDNESDAY MORNING. ISOLATED STORM TOTALS BETWEEN 4 PM THIS AFTERNOON AND 6 AM WEDNESDAY MAY APPROACH 6 INCHES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$ DRAG
7 follow-up statements
465 WGUS61 KPHI 040137 FFAPHI FLOOD WATCH NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 937 PM EDT MON SEP 3 2012 ...TROPICAL RAINS THREATEN TO PRODUCE POCKETS OF FLASH FLOODING AT TIMES INTO EARLY WEDNESDAY... .A WARM FRONT ACROSS DELMARVA WILL BE SLOWLY LIFTING NORTH THROUGH TUESDAY AS LOW PRESSURE MOVES FROM THE LOWER OHIO VALLEY TOWARD NEW YORK STATE. THE LOW SHOULD TRAIL A WEAK COOL FRONT SOUTHWARD INTO THE DELAWARE VALLEY ON WEDNESDAY. POCKETS OF SHORT DURATION EXCESSIVE RAINS ARE PROBABLE IN THIS PATTERN... ESPECIALLY SINCE THE BANDS OF SHOWERS AND EMBEDDED THUNDERSTORMS WILL BE MOVING ONLY VERY SLOWLY NORTHEASTWARD. DEZ001-NJZ015>019-PAZ067>071-040945- /O.CON.KPHI.FF.A.0004.000000T0000Z-120905T1000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ NEW CASTLE-MERCER-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON- CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...TRENTON...PENNSVILLE... GLASSBORO...CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY... WEST CHESTER...NORRISTOWN...DOYLESTOWN...MEDIA...PHILADELPHIA 937 PM EDT MON SEP 3 2012 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TUESDAY NIGHT... THE FLASH FLOOD WATCH CONTINUES FOR * PORTIONS OF NORTHERN DELAWARE...NEW JERSEY AND SOUTHEAST PENNSYLVANIA...INCLUDING THE FOLLOWING AREAS...IN NORTHERN DELAWARE...NEW CASTLE. IN NEW JERSEY...CAMDEN...GLOUCESTER... MERCER...NORTHWESTERN BURLINGTON AND SALEM. IN SOUTHEAST PENNSYLVANIA...BUCKS...CHESTER...DELAWARE...MONTGOMERY AND PHILADELPHIA. * THROUGH LATE TUESDAY NIGHT * GENERAL RAINFALL OF 2 TO 4 INCHES IS EXPECTED BY DAYBREAK WEDNESDAY IN THE INTERSTATE 95 CORRIDOR FROM NEAR TRENTON THROUGH THE PHILADELPHIA METRO AREA INTO NORTHERN DELAWARE. * FOR NOW...THE PRIMARY FLOOD THREAT IS FOR SMALL STREAMS AND POOR DRAINAGE AREAS. BANDS OF HEAVY SHOWERS WITH EMBEDDED THUNDERSTORMS CAN EASILY PRODUCE 1 TO 2 INCHES OF RAIN IN AN HOURS TIME. IF A BAND OF HEAVY SHOWERS LINGERS...EXCESSIVE RAINFALL WOULD RESULT IN FLOODING OF SMALL STREAMS AND AND POOR DRAINAGE AREAS. * THE NEXT OUTBREAK OF HEAVY SHOWERS AND THUNDERSTORMS MAY DEVELOP FROM PHILADELPHIA PENNSYLVANIA AND WILMINGTON DELAWARE INTO THE WESTERN SUBURBS TOWARD 1 OR 2 AM TUESDAY. * WIDESPREAD HEAVY SHOWERS AND EMBEDDED THUNDERSTORMS ARE FORECAST TO AFFECT THE WATCH AREA TUESDAY NIGHT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$ DRAG
106 WGUS61 KPHI 040824 FFAPHI URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 424 AM EDT TUE SEP 4 2012 ...TROPICAL RAINS THREATEN TO PRODUCE POCKETS OF FLASH FLOODING AT TIMES INTO WEDNESDAY... .A WARM FRONT ACROSS DELMARVA WILL BE SLOWLY LIFTING NORTH TODAY AS LOW PRESSURE MOVES FROM THE OHIO VALLEY TOWARD NEW YORK STATE. THE LOW SHOULD TRAIL A WEAK COOL FRONT SOUTHWARD INTO THE DELAWARE VALLEY ON WEDNESDAY. POCKETS OF SHORT DURATION EXCESSIVE RAINS ARE PROBABLE IN THIS PATTERN...ESPECIALLY SINCE THE BANDS OF SHOWERS AND EMBEDDED THUNDERSTORMS WILL BE MOVING VERY SLOWLY. DEZ001-NJZ015>019-PAZ067>071-041630- /O.EXT.KPHI.FF.A.0004.000000T0000Z-120906T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ NEW CASTLE-MERCER-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON- CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...TRENTON...PENNSVILLE... GLASSBORO...CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY... WEST CHESTER...NORRISTOWN...DOYLESTOWN...MEDIA...PHILADELPHIA 424 AM EDT TUE SEP 4 2012 ...FLASH FLOOD WATCH NOW IN EFFECT THROUGH WEDNESDAY EVENING... THE FLASH FLOOD WATCH IS NOW IN EFFECT FOR * PORTIONS OF NORTHERN DELAWARE...NEW JERSEY AND SOUTHEAST PENNSYLVANIA...INCLUDING THE FOLLOWING AREAS...IN NORTHERN DELAWARE...NEW CASTLE. IN NEW JERSEY...CAMDEN...GLOUCESTER... MERCER...NORTHWESTERN BURLINGTON AND SALEM. IN SOUTHEAST PENNSYLVANIA...BUCKS...CHESTER...DELAWARE...MONTGOMERY AND PHILADELPHIA. * THROUGH WEDNESDAY EVENING * GENERAL RAINFALL OF 2 TO 4 INCHES IS EXPECTED THROUGH WEDNESDAY IN THE INTERSTATE 95 CORRIDOR FROM NEAR TRENTON THROUGH THE PHILADELPHIA METRO AREA INTO NORTHERN DELAWARE. * FOR NOW...THE PRIMARY FLOOD THREAT IS FOR SMALL STREAMS AND POOR DRAINAGE AREAS. BANDS OF HEAVY SHOWERS WITH EMBEDDED THUNDERSTORMS CAN EASILY PRODUCE 1 TO 2 INCHES OF RAIN IN AN HOURS TIME. IF A BAND OF HEAVY SHOWERS LINGERS...EXCESSIVE RAINFALL WOULD RESULT IN FLOODING OF SMALL STREAMS AND POOR DRAINAGE AREAS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$
233 WGUS61 KPHI 041031 FFAPHI FLOOD WATCH NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 631 AM EDT TUE SEP 4 2012 ...TROPICAL RAINS THREATEN TO PRODUCE POCKETS OF FLASH FLOODING AT TIMES INTO WEDNESDAY... .A WARM FRONT ACROSS THE UPPER DELMARVA WILL BE SLOWLY LIFTING NORTH TODAY AS LOW PRESSURE MOVES FROM THE OHIO VALLEY TOWARD NEW YORK STATE. THE LOW SHOULD TRAIL A WEAK COOL FRONT SOUTHWARD INTO THE DELAWARE VALLEY ON WEDNESDAY. POCKETS OF SHORT DURATION EXCESSIVE RAINS ARE PROBABLE IN THIS PATTERN...ESPECIALLY SINCE THE BANDS OF SHOWERS AND EMBEDDED THUNDERSTORMS WILL BE MOVING VERY SLOWLY. DEZ001-NJZ015>019-PAZ067>071-042100- /O.CON.KPHI.FF.A.0004.000000T0000Z-120906T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ NEW CASTLE-MERCER-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON- CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...TRENTON...PENNSVILLE... GLASSBORO...CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY... WEST CHESTER...NORRISTOWN...DOYLESTOWN...MEDIA...PHILADELPHIA 631 AM EDT TUE SEP 4 2012 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH WEDNESDAY EVENING... THE FLASH FLOOD WATCH CONTINUES FOR * PORTIONS OF NORTHERN DELAWARE...NEW JERSEY AND SOUTHEAST PENNSYLVANIA...INCLUDING THE FOLLOWING AREAS...IN NORTHERN DELAWARE...NEW CASTLE. IN NEW JERSEY...CAMDEN...GLOUCESTER... MERCER...NORTHWESTERN BURLINGTON AND SALEM. IN SOUTHEAST PENNSYLVANIA...BUCKS...CHESTER...DELAWARE...MONTGOMERY AND PHILADELPHIA. * THROUGH WEDNESDAY EVENING * GENERAL RAINFALL OF 2 TO 4 INCHES IS EXPECTED THROUGH WEDNESDAY IN THE INTERSTATE 95 CORRIDOR FROM NEAR TRENTON THROUGH THE PHILADELPHIA METRO AREA INTO NORTHERN DELAWARE. * FOR NOW...THE PRIMARY FLOOD THREAT IS FOR SMALL STREAMS AND POOR DRAINAGE AREAS. BANDS OF HEAVY SHOWERS WITH EMBEDDED THUNDERSTORMS CAN EASILY PRODUCE 1 TO 2 INCHES OF RAIN IN AN HOURS TIME. IF A BAND OF HEAVY SHOWERS LINGERS...EXCESSIVE RAINFALL WOULD RESULT IN FLOODING OF SMALL STREAMS AND POOR DRAINAGE AREAS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$
509 WGUS61 KPHI 041947 FFAPHI FLOOD WATCH NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 347 PM EDT TUE SEP 4 2012 DEZ001-NJZ015>019-PAZ067>071-051000- /O.CON.KPHI.FF.A.0004.000000T0000Z-120906T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ NEW CASTLE-MERCER-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON- CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...TRENTON...PENNSVILLE... GLASSBORO...CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY... WEST CHESTER...NORRISTOWN...DOYLESTOWN...MEDIA...PHILADELPHIA 347 PM EDT TUE SEP 4 2012 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH WEDNESDAY EVENING... THE FLASH FLOOD WATCH CONTINUES FOR * PORTIONS OF NORTHERN DELAWARE...NEW JERSEY AND SOUTHEAST PENNSYLVANIA...INCLUDING THE FOLLOWING AREAS...IN NORTHERN DELAWARE...NEW CASTLE. IN NEW JERSEY...CAMDEN...GLOUCESTER... MERCER...NORTHWESTERN BURLINGTON AND SALEM. IN SOUTHEAST PENNSYLVANIA...BUCKS...CHESTER...DELAWARE...MONTGOMERY AND PHILADELPHIA. * THROUGH WEDNESDAY EVENING * GENERAL RAINFALL AMOUNTS OF 2 TO 4 INCHES FOR THE ENTIRE EVENT ARE EXPECTED THROUGH WEDNESDAY IN THE INTERSTATE 95 CORRIDOR FROM NEAR TRENTON THROUGH THE PHILADELPHIA METRO AREA INTO NORTHERN DELAWARE. ISOLATED GREATER AMOUNTS CAN BE EXPECTED. * FOR NOW...THE PRIMARY FLOOD THREAT IS FOR SMALL STREAMS AND POOR DRAINAGE AREAS. BANDS OF HEAVY SHOWERS WITH EMBEDDED THUNDERSTORMS CAN EASILY PRODUCE 1 TO 2 INCHES OF RAIN IN AN HOURS TIME. IF A BAND OF HEAVY SHOWERS LINGERS...EXCESSIVE RAINFALL WOULD RESULT IN FLOODING OF SMALL STREAMS AND POOR DRAINAGE AREAS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$
772 WGUS61 KPHI 050143 FFAPHI FLOOD WATCH NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 943 PM EDT TUE SEP 4 2012 DEZ001-NJZ015>019-PAZ067>071-050945- /O.CON.KPHI.FF.A.0004.000000T0000Z-120906T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ NEW CASTLE-MERCER-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON- CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...TRENTON...PENNSVILLE... GLASSBORO...CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY... WEST CHESTER...NORRISTOWN...DOYLESTOWN...MEDIA...PHILADELPHIA 943 PM EDT TUE SEP 4 2012 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH WEDNESDAY EVENING... THE FLASH FLOOD WATCH CONTINUES FOR * PORTIONS OF NORTHERN DELAWARE...NEW JERSEY AND SOUTHEAST PENNSYLVANIA...INCLUDING THE FOLLOWING AREAS...IN NORTHERN DELAWARE...NEW CASTLE. IN NEW JERSEY...CAMDEN...GLOUCESTER... MERCER...NORTHWESTERN BURLINGTON AND SALEM. IN SOUTHEAST PENNSYLVANIA...BUCKS...CHESTER...DELAWARE...MONTGOMERY AND PHILADELPHIA. * THROUGH WEDNESDAY EVENING * GENERAL RAINFALL AMOUNTS OF 2 TO 4 INCHES FOR THE ENTIRE EVENT ARE EXPECTED THROUGH WEDNESDAY IN THE INTERSTATE 95 CORRIDOR FROM NEAR TRENTON THROUGH THE PHILADELPHIA METRO AREA INTO NORTHERN DELAWARE. ISOLATED GREATER AMOUNTS CAN BE EXPECTED. * FOR NOW...THE PRIMARY FLOOD THREAT IS FOR SMALL STREAMS AND POOR DRAINAGE AREAS. BANDS OF HEAVY SHOWERS WITH EMBEDDED THUNDERSTORMS CAN EASILY PRODUCE 1 TO 2 INCHES OF RAIN IN AN HOURS TIME. IF A BAND OF HEAVY SHOWERS LINGERS...EXCESSIVE RAINFALL WOULD RESULT IN FLOODING OF SMALL STREAMS AND POOR DRAINAGE AREAS. * IT APPEARS THE PRIMARY TIME FOR RENEWED HEAVY SHOWERS AND THUNDERSTORMS IN THIS WATCH AREA WILL BEGIN NEAR OR SHORTLY AFTER DAYBREAK. SHOWERS AND THUNDERSTORMS SHOULD BE WIDESPREAD IN THE WATCH AREA FROM MIDDAY THROUGH MID AFTERNOON WEDNESDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$ DRAG
139 WGUS61 KPHI 050755 FFAPHI FLOOD WATCH NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 355 AM EDT WED SEP 5 2012 DEZ001-NJZ015>019-PAZ067>071-060000- /O.CON.KPHI.FF.A.0004.000000T0000Z-120906T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ NEW CASTLE-MERCER-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON- CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...TRENTON...PENNSVILLE... GLASSBORO...CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY... WEST CHESTER...NORRISTOWN...DOYLESTOWN...MEDIA...PHILADELPHIA 355 AM EDT WED SEP 5 2012 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THIS EVENING... THE FLASH FLOOD WATCH CONTINUES FOR * THE FOLLOWING COUNTIES. IN DELAWARE...NEW CASTLE. IN NEW JERSEY...CAMDEN...GLOUCESTER...MERCER...NORTHWESTERN BURLINGTON AND SALEM. IN SOUTHEASTERN PENNSYLVANIA...BUCKS...CHESTER... DELAWARE...MONTGOMERY AND PHILADELPHIA. * THROUGH THIS EVENING * HEAVY RAIN HAS ALREADY FALLEN IN MUCH OF THE REGION. ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS WITH HEAVY RAIN IS EXPECTED FOR TODAY. RAINFALL TOTALS OF AN INCH OR TWO ARE ANTICIPATED TO BE COMMON TODAY WITH LOCALLY HIGHER AMOUNTS. SOME PLACES COULD PICK UP AN ADDITIONAL TWO TO FOUR INCHES OF RAIN. * URBAN AREAS REMAIN HIGHLY SUSCEPTIBLE TO FLASH FLOODING. STORM DRAINS ARE USUALLY NOT ABLE TO DEAL WITH A LARGE VOLUME OF RAIN WATER IN A SHORT AMOUNT OF TIME...RESULTING IN FLOODING OF ROADWAYS AND AREAS OF POOR DRAINAGE. * THE THREAT FOR HEAVY RAIN WILL COME TO AN END TONIGHT AS A WEAK FRONTAL BOUNDARY PUSHES THE EXCESSIVELY HUMID AIR MASS OFF THE COAST. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR THE FORECAST AND BE PREPARED TO TAKE ACTION IF FLASH FLOOD WARNINGS ARE ISSUED. && $$ IOVINO
553 WGUS61 KPHI 051937 FFAPHI FLOOD WATCH NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 337 PM EDT WED SEP 5 2012 DEZ001-NJZ015>019-PAZ067>071-052045- /O.CAN.KPHI.FF.A.0004.000000T0000Z-120906T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ NEW CASTLE-MERCER-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON- CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...TRENTON...PENNSVILLE... GLASSBORO...CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY... WEST CHESTER...NORRISTOWN...DOYLESTOWN...MEDIA...PHILADELPHIA 337 PM EDT WED SEP 5 2012 ...FLASH FLOOD WATCH IS CANCELLED... THE THREAT FOR FLASH FLOODING HAS GREATLY DIMINISHED, THERFORE THE FLASH FLOOD WATCH HAS BEEN CANCELLED. $$
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 3, 12:24 AM EDT | Areal Flood Advisory | PHI | Chester, Delaware | 3 hr |
| Sep 3, 12:58 AM EDT | Flash Flood Warning | PHI | Chester, Delaware | 5 hr |
| Sep 3, 4:19 AM EDT | River Flood Warning | PHI | Delaware | 91 min |
| Sep 3, 4:44 AM EDT | Areal Flood Advisory | PHI | Chester, Montgomery | 3 hr |
| Sep 3, 6:24 AM EDT | Areal Flood Warning | PHI | Chester | 4 hr |
| Sep 3, 8:05 AM EDT | Areal Flood Advisory | PHI | Chester, Delaware, Montgomery, Philadelphia | 3 hr |
| Sep 3, 8:23 AM EDT | Flash Flood Warning | PHI | Delaware | 82 min |
| Sep 3, 9:15 AM EDT | Flash Flood Warning | PHI | Chester, Delaware, Montgomery | 3 hr |
| Sep 3, 10:28 AM EDT | Special Weather Statement | PHI | Philadelphia | 62 min |
| Sep 3, 11:14 AM EDT | Areal Flood Advisory | PHI | Bucks, Montgomery, Philadelphia | 2 hr |
| Sep 3, 12:04 PM EDT | Areal Flood Warning | PHI | Chester | 4 hr |
| Sep 3, 2:44 PM EDT | Areal Flood Advisory | PHI | Chester | 119 min |
| Sep 3, 5:27 PM EDT | Areal Flood Warning | PHI | Delaware | 3 hr |
| Sep 3, 6:41 PM EDT | River Flood Warning | PHI | Delaware | 2 hr |
| Sep 3, 6:05 AM EDT | Areal Flood Advisory | PHI | New Castle | 3 hr |
| Sep 3, 7:31 AM EDT | Flash Flood Warning | PHI | New Castle | 2 hr |
| Sep 3, 1:42 PM EDT | Special Weather Statement | PHI | Sussex | 93 min |
| Sep 3, 1:48 PM EDT | Areal Flood Advisory | PHI | Kent, New Castle | 3 hr |
| Sep 3, 1:53 PM EDT | Areal Flood Advisory | PHI | Kent, New Castle | 3 hr |
| Sep 3, 2:19 PM EDT | Areal Flood Advisory | PHI | Sussex | 114 min |
| Sep 3, 2:39 PM EDT | Special Weather Statement | PHI | New Castle | 66 min |
| Sep 3, 3:14 PM EDT | Flash Flood Warning | PHI | Kent, New Castle | 4 hr |
| Sep 3, 3:25 PM EDT | Tornado Warning | PHI | Kent | 20 min |
| Sep 3, 3:58 PM EDT | Areal Flood Advisory | PHI | New Castle | 3 hr |
| Sep 3, 8:57 AM EDT | Areal Flood Warning | PHI | Atlantic, Camden, Gloucester | 2 hr |
| Sep 3, 3:47 PM EDT | Special Marine Warning | PHI | 58 min | |
| Sep 3, 3:50 PM EDT | Special Weather Statement | PHI | Cumberland, Salem | 55 min |
| Sep 3, 4:39 PM EDT | Special Weather Statement | PHI | Atlantic, Cumberland, Gloucester, Salem | 66 min |
| Sep 3, 4:59 PM EDT | Areal Flood Advisory | PHI | Cumberland | 116 min |
| Sep 3, 5:44 PM EDT | Special Marine Warning | PHI | 31 min | |
| Sep 3, 5:45 PM EDT | Special Weather Statement | PHI | Atlantic | 60 min |
| Sep 3, 6:25 PM EDT | Areal Flood Advisory | PHI | Atlantic, Ocean | 2 hr |
| Sep 3, 6:28 PM EDT | Areal Flood Advisory | PHI | Atlantic, Cape May | 103 min |
| Sep 3, 6:49 PM EDT | Small Craft Advisory | PHI | 3 hr | |
| Sep 3, 7:29 PM EDT | Areal Flood Advisory | PHI | Atlantic | 115 min |
Nearby
Flash Flood Watches in New Jersey, 2012Flash Flood Watches in Pennsylvania, 2012Flash Flood Watches in Delaware, 2012Every flash flood watch in 2012
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.