Alert archive / New Jersey / Flash Flood Watches in 2012
Flash Flood Watch 3, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood watch at Aug 5, 2012, 3:49 AM EDT for 6 counties in New Jersey; Carbon County, Monroe County, Northampton County, Pennsylvania. It took effect at Aug 5, 2012, 2:00 PM EDT. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Aug 5, 2012, 3:49 AM EDT (07:49 UTC)
- In effect from
- Aug 5, 2012, 2:00 PM EDT
- Expired
- Aug 5, 2012, 8:12 PM EDT
- In force
- 6 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Flood severity
- None
Counties Hunterdon County, NJ, Middlesex County, NJ, Morris County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ, Carbon County, PA, Monroe County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 105 km from the middle of the area, began a volume at 07:53 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, 7.8 hours before the alert went out and 175 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
- 1439 J/kg
- Mixed-layer CIN
- -47 J/kg
- Mixed-layer LCL
- 740 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 43 m²/s²
- 0-3 km storm-relative helicity
- 40 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
405 WGUS61 KPHI 050749 FFAPHI URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 349 AM EDT SUN AUG 5 2012 NJZ001-007>010-012-PAZ054-055-062-052100- /O.NEW.KPHI.FF.A.0003.120805T1800Z-120806T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-CARBON-MONROE- NORTHAMPTON- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...JIM THORPE... STROUDSBURG...BETHLEHEM...EASTON 349 AM EDT SUN AUG 5 2012 ...FLASH FLOOD WATCH IN EFFECT FROM 2 PM EDT THIS AFTERNOON THROUGH MONDAY MORNING... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A * FLASH FLOOD WATCH FOR PORTIONS OF NEW JERSEY AND PENNSYLVANIA...INCLUDING THE FOLLOWING AREAS...IN NEW JERSEY... HUNTERDON...MIDDLESEX...MORRIS...SOMERSET...SUSSEX AND WARREN. IN PENNSYLVANIA...CARBON...MONROE AND NORTHAMPTON. * FROM 2 PM EDT THIS AFTERNOON THROUGH MONDAY MORNING * MOIST UNSTABLE AIR FLOWING AHEAD OF AN APPROACHING COLD FRONT WILL PRODUCE SHOWERS AND THUNDERSTORMS...MAINLY LATER THIS AFTERNOON AND TONIGHT. THE SHOWERS AND THUNDERSTORMS WILL BE CAPABLE OF PRODUCE TORRENTIAL RAINS...WITH SOME LOCATIONS RECEIVING MORE THAN 2 INCHES OF RAIN IN LESS THAN AN HOUR. THIS COULD LEAD TO LOCALIZED FLASH FLOODING. * THE GREATEST THREAT FOR FLASH FLOODING IS OVER PORTIONS OF NORTHWEST NEW JERSEY...GENERALLY LATER THIS AFTERNOON AND TONIGHT. 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. && $$
2 follow-up statements
053 WGUS61 KPHI 051959 FFAPHI FLOOD WATCH NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 359 PM EDT SUN AUG 5 2012 NJZ001-007>010-012-PAZ054-055-062-060400- /O.CON.KPHI.FF.A.0003.000000T0000Z-120806T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-CARBON-MONROE- NORTHAMPTON- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...JIM THORPE... STROUDSBURG...BETHLEHEM...EASTON 359 PM EDT SUN AUG 5 2012 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH MONDAY MORNING... THE FLASH FLOOD WATCH CONTINUES FOR * PORTIONS OF NEW JERSEY AND PENNSYLVANIA...INCLUDING THE FOLLOWING AREAS...IN NEW JERSEY...HUNTERDON...MIDDLESEX... MORRIS...SOMERSET...SUSSEX AND WARREN. IN PENNSYLVANIA... CARBON...MONROE AND NORTHAMPTON. * THROUGH MONDAY MORNING * MOIST UNSTABLE AIR FLOWING AHEAD OF AN APPROACHING COLD FRONT WILL PRODUCE MORE HEAVY RAIN SHOWERS AND THUNDERSTORMS THIS EVENING. THE SHOWERS AND THUNDERSTORMS WILL BE CAPABLE OF PRODUCE TORRENTIAL RAINS...WITH SOME LOCATIONS RECEIVING MORE THAN 2 INCHES OF RAIN IN LESS THAN AN HOUR. THIS COULD LEAD TO LOCALIZED FLASH FLOODING. * THE GREATEST THREAT FOR FLASH FLOODING IS OVER PORTIONS OF NORTHWEST NEW JERSEY...GENERALLY BETWEEN NOW AND MIDNIGHT. IF THE SPOTTY EXCESSIVE AMOUNTS DO NOT OCCUR BY MIDNIGHT TONIGHT...THE WATCH WILL PROBABLY BE DISCONTINUED AROUND MIDNIGHT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$ DRAG
160 WGUS61 KPHI 060012 FFAPHI FLOOD WATCH NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 812 PM EDT SUN AUG 5 2012 NJZ001-007>010-012-PAZ054-055-062-060115- /O.CAN.KPHI.FF.A.0003.000000T0000Z-120806T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-CARBON-MONROE- NORTHAMPTON- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...JIM THORPE... STROUDSBURG...BETHLEHEM...EASTON 812 PM EDT SUN AUG 5 2012 ...FLASH FLOOD WATCH IS CANCELLED... THE FLASH FLOOD WATCH FOR PORTIONS OF NEW JERSEY AND PENNSYLVANIA HAS BEEN CANCELLED. $$
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 5, 1:00 PM EDT | Special Weather Statement | PHI | Warren | 30 min |
| Aug 5, 1:20 PM EDT | Special Weather Statement | PHI | Sussex | 85 min |
| Aug 5, 5:13 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex, Warren | 77 min |
| Aug 5, 5:22 PM EDT | Severe Thunderstorm Warning | PHI | Gloucester, Hunterdon, Salem, Warren | 68 min |
| Aug 5, 5:38 PM EDT | Severe Thunderstorm Warning | PHI | Gloucester, Salem | 82 min |
| Aug 5, 5:52 PM EDT | Special Marine Warning | PHI | 83 min | |
| Aug 5, 6:16 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 3 more | 74 min |
| Aug 5, 6:21 PM EDT | Severe Thunderstorm Warning | PHI | Cumberland, Salem | 39 min |
| Aug 5, 7:09 PM EDT | Special Weather Statement | PHI | Atlantic, Cumberland | 66 min |
| Aug 5, 7:30 PM EDT | Special Weather Statement | PHI | Atlantic, Cumberland, Monmouth, Ocean | 60 min |
| Aug 5, 7:38 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex, Monmouth, Ocean | 67 min |
| Aug 5, 7:40 PM EDT | Special Marine Warning | PHI | 95 min | |
| Aug 5, 12:15 PM EDT | Special Weather Statement | PHI | Carbon, Monroe | 45 min |
| Aug 5, 12:29 PM EDT | Special Weather Statement | PHI | Northampton | 31 min |
| Aug 5, 1:03 PM EDT | Special Weather Statement | PHI | Monroe | 27 min |
| Aug 5, 4:12 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Carbon, Lehigh, Monroe, Northampton | 78 min |
| Aug 5, 4:23 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester, Montgomery | 67 min |
Nearby
Flash Flood Watches in New Jersey, 2012Flash Flood Watches in Pennsylvania, 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.