Alert archive / New Jersey / Flash Flood Watches in 2011
Flash Flood Watch 3, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood watch at Jun 24, 2011, 3:41 AM EDT for 4 counties in Pennsylvania; 7 counties in New Jersey. It was in force for 16 hr.
The area
The counties it named.
The facts
- Issued
- Jun 24, 2011, 3:41 AM EDT (07:41 UTC)
- Expired
- Jun 24, 2011, 7:48 PM EDT
- In force
- 16 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Flood severity
- None
Counties Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Morris County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ, Carbon County, PA, Lehigh County, PA, Monroe County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 100 km from the middle of the area, began a volume at 07:43 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 00:00Z, 7.7 hours before the alert went out and 179 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
- 3 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 442 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 32 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
405 WGUS61 KPHI 240741 FFAPHI URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 341 AM EDT FRI JUN 24 2011 NJZ001-007-008-PAZ054-055-061-062-250300- /O.NEW.KPHI.FF.A.0003.110624T0741Z-110625T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SUSSEX-WARREN-MORRIS-CARBON-MONROE-LEHIGH-NORTHAMPTON- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... JIM THORPE...STROUDSBURG...ALLENTOWN...BETHLEHEM...EASTON 341 AM EDT FRI JUN 24 2011 ...FLASH FLOOD WATCH IN EFFECT THROUGH THIS EVENING... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A * FLASH FLOOD WATCH FOR PORTIONS OF NORTHERN NEW JERSEY AND PENNSYLVANIA...INCLUDING THE FOLLOWING AREAS...IN NORTHERN NEW JERSEY...MORRIS...SUSSEX AND WARREN. IN PENNSYLVANIA... CARBON...LEHIGH...MONROE AND NORTHAMPTON. * THROUGH THIS EVENING * TWO TO AS MUCH AS FOUR INCHES OF RAIN HAS FALLEN ACROSS THE WATCH AREA OVER THE LAST DAY OR SO. THIS HAS SATURATED THE GROUND AND WITH AN ADDITIONAL ONE TO TWO INCHES POSSIBLE OVER A SHORT PERIOD OF TIME, FLASH FLOODING COULD BE POSSIBLE. THERE WILL BE A BREAK IN PRECIPITATION EARLY, BUT SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP THROUGH THE DAY AND MAY BECOME HEAVY AT TIMES THIS AFTERNOON. 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. && $$ ROBERTSON
4 follow-up statements
603 WGUS61 KPHI 241520 FFAPHI FLOOD WATCH NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1120 AM EDT FRI JUN 24 2011 NJZ001-007-008-PAZ054-055-061-062-242330- /O.CON.KPHI.FF.A.0003.000000T0000Z-110625T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SUSSEX-WARREN-MORRIS-CARBON-MONROE-LEHIGH-NORTHAMPTON- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... JIM THORPE...STROUDSBURG...ALLENTOWN...BETHLEHEM...EASTON 1120 AM EDT FRI JUN 24 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 11 PM EDT THIS EVENING... THE FLASH FLOOD WATCH CONTINUES FOR * PORTIONS OF NORTHERN NEW JERSEY AND PENNSYLVANIA...INCLUDING THE FOLLOWING AREAS...IN NORTHERN NEW JERSEY...MORRIS...SUSSEX AND WARREN. IN PENNSYLVANIA...CARBON...LEHIGH...MONROE AND NORTHAMPTON. * UNTIL 11 PM EDT THIS EVENING * TWO TO AS MUCH AS FOUR INCHES OF RAIN HAVE FALLEN ACROSS THE WATCH AREA OVER THE LAST DAY OR SO. THIS HAS SATURATED THE GROUND. WITH AN ADDITIONAL ONE TO TWO INCHES POSSIBLE OVER A SHORT PERIOD OF TIME TODAY...FLASH FLOODING COULD OCCUR. AFTER A BREAK IN PRECIPITATION THIS MORNING...SHOWERS AND THUNDERSTORMS ARE EXPECTED TO REDEVELOP AND BECOME HEAVY AT TIMES THIS AFTERNOON. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$ KRUZDLO
787 WGUS61 KPHI 241938 FFAPHI URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 338 PM EDT FRI JUN 24 2011 NJZ009-010-012-015-PAZ069-250300- /O.EXA.KPHI.FF.A.0003.000000T0000Z-110625T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ HUNTERDON-SOMERSET-MIDDLESEX-MERCER-BUCKS- INCLUDING THE CITIES OF...FLEMINGTON...SOMERVILLE... NEW BRUNSWICK...TRENTON...DOYLESTOWN 338 PM EDT FRI JUN 24 2011 ...FLASH FLOOD WATCH IN EFFECT UNTIL 11 PM EDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS EXPANDED THE * FLASH FLOOD WATCH TO INCLUDE PORTIONS OF NEW JERSEY AND SOUTHEAST PENNSYLVANIA...INCLUDING THE FOLLOWING AREAS...IN NEW JERSEY...HUNTERDON...MERCER...MIDDLESEX AND SOMERSET. IN SOUTHEAST PENNSYLVANIA...BUCKS. * UNTIL 11 PM EDT THIS EVENING * WHILE THE FLASH FLOOD POTENTIAL IS GREATEST FURTHER TO THE NORTH...THE THREAT ALSO EXIST IN THIS EXPANDED AREA. WITH ONE TO TWO AND ONE-HALF INCHES OF RAINFALL POSSIBLE OVER A SHORT PERIOD OF TIME...FLASH FLOODING COULD OCCUR. 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. && $$ NJZ001-007-008-PAZ054-055-061-062-250300- /O.CON.KPHI.FF.A.0003.000000T0000Z-110625T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SUSSEX-WARREN-MORRIS-CARBON-MONROE-LEHIGH-NORTHAMPTON- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... JIM THORPE...STROUDSBURG...ALLENTOWN...BETHLEHEM...EASTON 338 PM EDT FRI JUN 24 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 11 PM EDT THIS EVENING... THE FLASH FLOOD WATCH CONTINUES FOR * PORTIONS OF NORTHERN NEW JERSEY AND PENNSYLVANIA...INCLUDING THE FOLLOWING AREAS...IN NORTHERN NEW JERSEY...MORRIS...SUSSEX AND WARREN. IN PENNSYLVANIA...CARBON...LEHIGH...MONROE AND NORTHAMPTON. * UNTIL 11 PM EDT THIS EVENING * TWO TO AS MUCH AS FOUR INCHES OF RAIN HAVE FALLEN ACROSS THE WATCH AREA OVER THE LAST DAY OR SO. THIS HAS SATURATED THE GROUND. WITH AN ADDITIONAL ONE TO TWO AND ONE-HALF INCHES POSSIBLE OVER A SHORT PERIOD OF TIME...FLASH FLOODING COULD OCCUR. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$ KRUZDLO
340 WGUS61 KPHI 242148 FFAPHI FLOOD WATCH NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 548 PM EDT FRI JUN 24 2011 PAZ054-055-061-062-242300- /O.CAN.KPHI.FF.A.0003.000000T0000Z-110625T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ CARBON-MONROE-LEHIGH-NORTHAMPTON- INCLUDING THE CITIES OF...JIM THORPE...STROUDSBURG...ALLENTOWN... BETHLEHEM...EASTON 548 PM EDT FRI JUN 24 2011 ...FLASH FLOOD WATCH IS CANCELLED... THE FLASH FLOOD WATCH FOR PORTIONS OF EAST CENTRAL PENNSYLVANIA AND NORTHEAST PENNSYLVANIA HAS BEEN CANCELLED. THE THREAT OF HEAVY RAIN HAS MOVED EAST.| $$ NJZ001-007>010-012-015-PAZ069-250300- /O.CON.KPHI.FF.A.0003.000000T0000Z-110625T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-MERCER-BUCKS- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...TRENTON...DOYLESTOWN 548 PM EDT FRI JUN 24 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 11 PM EDT THIS EVENING... THE FLASH FLOOD WATCH CONTINUES FOR * PORTIONS OF NEW JERSEY AND SOUTHEAST PENNSYLVANIA...INCLUDING THE FOLLOWING AREAS...IN NEW JERSEY...HUNTERDON...MERCER... MIDDLESEX...MORRIS...SOMERSET...SUSSEX AND WARREN. IN SOUTHEAST PENNSYLVANIA...BUCKS. * UNTIL 11 PM EDT THIS EVENING * TWO TO AS MUCH AS FOUR INCHES OF RAIN HAVE FALLEN ACROSS THE WATCH AREA OVER THE LAST DAY OR SO. THIS HAS SATURATED THE GROUND. WITH AN ADDITIONAL ONE TO TWO AND ONE-HALF INCHES POSSIBLE OVER A SHORT PERIOD OF TIME...FLASH FLOODING COULD OCCUR. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$ TFG
456 WGUS61 KPHI 242348 FFAPHI FLOOD WATCH NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 748 PM EDT FRI JUN 24 2011 NJZ001-007>010-012-015-PAZ069-250100- /O.CAN.KPHI.FF.A.0003.000000T0000Z-110625T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-MERCER-BUCKS- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...TRENTON...DOYLESTOWN 748 PM EDT FRI JUN 24 2011 ...FLASH FLOOD WATCH IS CANCELLED... THE FLASH FLOOD WATCH FOR PORTIONS OF NEW JERSEY AND SOUTHEAST PENNSYLVANIA HAS BEEN CANCELLED. THE THREAT FOR WIDESPREAD HEAVY RAIN HAS ENDED, THEREFORE THE WATCH HAS BEEN CANCELLED. $$ GORSE
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 23, 9:59 PM EDT | Special Weather Statement | PHI | Berks | 61 min |
| Jun 23, 10:41 PM EDT | Special Weather Statement | PHI | Lehigh | 64 min |
| Jun 23, 10:47 PM EDT | Special Weather Statement | PHI | Carbon | 58 min |
| Jun 23, 10:56 PM EDT | Special Weather Statement | PHI | Lebanon | 64 min |
| Jun 23, 10:58 PM EDT | Special Weather Statement | PHI | Berks | 62 min |
| Jun 23, 11:19 PM EDT | Areal Flood Advisory | PHI | Lehigh, Northampton | 116 min |
| Jun 23, 11:28 PM EDT | Special Weather Statement | PHI | Northampton | 62 min |
| Jun 23, 11:30 PM EDT | Special Weather Statement | PHI | Monroe | 60 min |
| Jun 23, 11:37 PM EDT | Special Weather Statement | PHI | Berks, Lehigh | 53 min |
| Jun 23, 11:46 PM EDT | Special Weather Statement | PHI | Berks | 59 min |
| Jun 24, 12:08 AM EDT | Areal Flood Advisory | PHI | Northampton | 112 min |
| Jun 24, 1:22 AM EDT | Special Weather Statement | PHI | Bucks | 53 min |
| Jun 24, 12:26 PM EDT | Special Weather Statement | PHI | Berks | 64 min |
| Jun 24, 1:41 PM EDT | Special Weather Statement | PHI | Carbon, Monroe | 64 min |
| Jun 24, 2:32 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 43 min |
| Jun 24, 3:54 PM EDT | Special Weather Statement | PHI | Monroe | 66 min |
| Jun 24, 4:20 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 55 min |
| Jun 24, 6:27 PM EDT | Special Weather Statement | PHI | Bucks | 63 min |
| Jun 24, 12:24 AM EDT | Special Weather Statement | PHI | Hunterdon, Morris, Warren | 66 min |
| Jun 24, 12:45 AM EDT | Areal Flood Advisory | PHI | Morris, Sussex, Warren | 2 hr |
| Jun 24, 1:36 AM EDT | River Flood Warning | PHI | Morris, Passaic | 11 hr |
| Jun 24, 5:48 AM EDT | Areal Flood Warning | PHI | Morris | 10 hr |
| Jun 24, 11:42 AM EDT | Special Weather Statement | PHI | Monmouth | 93 min |
| Jun 24, 12:09 PM EDT | Special Marine Warning | PHI | 86 min | |
| Jun 24, 12:34 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth, Ocean | 26 min |
| Jun 24, 1:17 PM EDT | Special Weather Statement | PHI | Ocean | 58 min |
| Jun 24, 1:32 PM EDT | Special Marine Warning | PHI | 88 min | |
| Jun 24, 1:33 PM EDT | Special Weather Statement | PHI | Hunterdon | 57 min |
| Jun 24, 2:01 PM EDT | Areal Flood Advisory | PHI | Ocean | 119 min |
| Jun 24, 2:01 PM EDT | Severe Thunderstorm Warning | PHI | Ocean | 43 min |
| Jun 24, 3:00 PM EDT | Special Weather Statement | PHI | Hunterdon, Somerset | 60 min |
| Jun 24, 3:03 PM EDT | Special Weather Statement | PHI | Ocean | 57 min |
| Jun 24, 3:57 PM EDT | Areal Flood Advisory | PHI | Ocean | 2 hr |
| Jun 24, 4:54 PM EDT | Areal Flood Advisory | PHI | Mercer, Middlesex, Somerset | 2 hr |
| Jun 24, 5:03 PM EDT | Severe Thunderstorm Warning | PHI | Mercer, Middlesex, Monmouth, Ocean, Somerset | 72 min |
| Jun 24, 5:33 PM EDT | Special Marine Warning | PHI | 117 min | |
| Jun 24, 7:13 PM EDT | Special Weather Statement | PHI | Warren | 62 min |
| Jun 24, 7:16 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Ocean | 38 min |
Nearby
Flash Flood Watches in New Jersey, 2011Flash Flood Watches in Pennsylvania, 2011Every flash flood watch 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.