Alert archive / New Jersey / Flash Flood Watches in 2011
Flash Flood Watch 7, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood watch at Aug 18, 2011, 3:12 PM EDT for 4 states. It took effect at Aug 18, 2011, 10:28 PM EDT. It was in force for 21 hr.
The area
The counties it named.
The facts
- Issued
- Aug 18, 2011, 3:12 PM EDT (19:12 UTC)
- In effect from
- Aug 18, 2011, 10:28 PM EDT
- Expired
- Aug 19, 2011, 7:51 PM EDT
- In force
- 21 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Flood severity
- None
All 26 counties
New Castle County, DE, Cecil County, MD, Kent County, MD, Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Ocean County, NJ, Salem County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ, Berks County, PA, Carbon County, PA, Delaware County, PA, Lehigh County, PA, Monroe County, PA, Northampton County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 61 km from the middle of the area, began a volume at 19:14 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, 7.2 hours before the alert went out and 115 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
- 780 J/kg
- Mixed-layer CIN
- -64 J/kg
- Mixed-layer LCL
- 1022 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 83 m²/s²
- 0-3 km storm-relative helicity
- 143 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
506 WGUS61 KPHI 181912 FFAPHI URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 312 PM EDT THU AUG 18 2011 NJZ001-007>010-012-PAZ054-055-060>062-191000- /O.NEW.KPHI.FF.A.0007.110819T0800Z-110820T0200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-CARBON-MONROE- BERKS-LEHIGH-NORTHAMPTON- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...JIM THORPE... STROUDSBURG...READING...ALLENTOWN...BETHLEHEM...EASTON 312 PM EDT THU AUG 18 2011 ...FLASH FLOOD WATCH IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY EVENING... THE NATIONAL WEATHER SERVICE HAS ISSUED A * FLASH FLOOD WATCH FOR THE PENNSYLVANIA COUNTIES OF CARBON, MONROE, NORTHAMPTON, LEHIGH AND BERKS, AND FOR THE NEW JERSEY COUNTIES OF SUSSEX, WARREN, MORRIS, HUNTERDON, SOMERSET AND MIDDLESEX. * FROM LATE TONIGHT THROUGH FRIDAY EVENING * SHOWERS AND THUNDERSTORMS FROM LATE TONIGHT THROUGH FRIDAY EVENING ARE EXPECTED TO PRODUCE ONE HALF TO ONE INCH OF RAIN WITH LOCALIZED AMOUNTS OF TWO TO FOUR INCHES POSSIBLE. CONDITIONS IN OUR REGION ARE NEARLY SATURATED DUE TO THE RECENT RAINFALL. ANY ADDITIONAL HEAVY RAIN MAY LEAD TO LOCALIZED FLASH FLOODING. 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. && $$ DEZ001-MDZ008-012-NJZ013>027-PAZ067>071-191000- /O.NEW.KPHI.FF.A.0007.110819T0800Z-110820T1000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ NEW CASTLE-CECIL-KENT MD-WESTERN MONMOUTH-EASTERN MONMOUTH-MERCER- SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND- ATLANTIC-CAPE MAY-ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC- COASTAL OCEAN-SOUTHEASTERN BURLINGTON-CHESTER-MONTGOMERY-BUCKS- DELAWARE-PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...ELKTON...CHESTERTOWN... FREEHOLD...SANDY HOOK...TRENTON...PENNSVILLE...GLASSBORO... CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY...JACKSON... MILLVILLE...HAMMONTON...CAPE MAY COURT HOUSE...OCEAN CITY... ATLANTIC CITY...LONG BEACH ISLAND...WHARTON STATE FOREST... WEST CHESTER...NORRISTOWN...DOYLESTOWN...MEDIA...PHILADELPHIA 312 PM EDT THU AUG 18 2011 ...FLASH FLOOD WATCH IN EFFECT FROM LATE TONIGHT THROUGH LATE FRIDAY NIGHT... THE NATIONAL WEATHER SERVICE HAS ISSUED A * FLASH FLOOD WATCH FOR THE PENNSYLVANIA COUNTIES OF BUCKS, MONTGOMERY, CHESTER, DELAWARE AND PHILADELPHIA, FOR THE NEW JERSEY COUNTIES OF MERCER, MONMOUTH, OCEAN, BURLINGTON, CAMDEN, GLOUCESTER, SALEM, CUMBERLAND, ATLANTIC AND CAPE MAY, FOR NEW CASTLE COUNTY IN DELAWARE AND FOR CECIL AND KENT COUNTIES IN MARYLAND. * FROM LATE TONIGHT THROUGH LATE FRIDAY NIGHT * SHOWERS AND THUNDERSTORMS FROM LATE TONIGHT THROUGH LATE FRIDAY NIGHT ARE EXPECTED TO PRODUCE ONE HALF TO ONE INCH OF RAIN WITH LOCALIZED AMOUNTS OF TWO TO FOUR INCHES POSSIBLE. CONDITIONS IN OUR REGION ARE NEARLY SATURATED DUE TO THE RECENT RAINFALL. ANY ADDITIONAL HEAVY RAIN MAY LEAD TO LOCALIZED FLASH FLOODING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$
5 follow-up statements
750 WGUS61 KPHI 190228 FFAPHI URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1028 PM EDT THU AUG 18 2011 DEZ001-MDZ008-012-NJZ013>027-PAZ067>071-191030- /O.EXT.KPHI.FF.A.0007.110819T0228Z-110820T1000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ NEW CASTLE-CECIL-KENT MD-WESTERN MONMOUTH-EASTERN MONMOUTH-MERCER- SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND- ATLANTIC-CAPE MAY-ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC- COASTAL OCEAN-SOUTHEASTERN BURLINGTON-CHESTER-MONTGOMERY-BUCKS- DELAWARE-PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...ELKTON...CHESTERTOWN... FREEHOLD...SANDY HOOK...TRENTON...PENNSVILLE...GLASSBORO... CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY...JACKSON... MILLVILLE...HAMMONTON...CAPE MAY COURT HOUSE...OCEAN CITY... ATLANTIC CITY...LONG BEACH ISLAND...WHARTON STATE FOREST... WEST CHESTER...NORRISTOWN...DOYLESTOWN...MEDIA...PHILADELPHIA 1028 PM EDT THU AUG 18 2011 ...FLASH FLOOD WATCH NOW IN EFFECT THROUGH LATE FRIDAY NIGHT... THE FLASH FLOOD WATCH IS NOW IN EFFECT 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 AND KENT MD. IN NEW JERSEY...ATLANTIC... ATLANTIC COASTAL CAPE MAY...CAMDEN...CAPE MAY...COASTAL ATLANTIC...COASTAL OCEAN...CUMBERLAND...EASTERN MONMOUTH... GLOUCESTER...MERCER...NORTHWESTERN BURLINGTON...OCEAN... SALEM...SOUTHEASTERN BURLINGTON AND WESTERN MONMOUTH. IN SOUTHEAST PENNSYLVANIA...BUCKS...CHESTER...DELAWARE... MONTGOMERY AND PHILADELPHIA. * THROUGH LATE FRIDAY NIGHT * SHOWERS AND THUNDERSTORMS THROUGH LATE FRIDAY NIGHT ARE EXPECTED TO PRODUCE AN ADDITIONAL ONE HALF TO ONE INCH OF RAIN WITH LOCALIZED AMOUNTS OF FOUR INCHES POSSIBLE. CONDITIONS IN OUR REGION ARE NEARLY SATURATED DUE TO THE RECENT RAINFALL. ANY ADDITIONAL HEAVY RAIN MAY LEAD TO LOCALIZED FLASH FLOODING. * ALREADY PHILADELPHIA HAS SET AN ALL TIME RECORD MONTHLY RAINFALL OF OVER NEARLY 12 AND ONE QUARTER INCHES IN 18 DAYS...WITH ABOUT 2 INCHES HAVING OCCURRED TODAY THROUGH 10 PM. * A BAND OF HEAVY THUNDERSTORMS DEVELOPING ALONG A WEAK FRONTAL BOUNDARY NEAR THE PENNSYLVANIA..MARYLAND BORDER IS EXPECTED TO SPREAD EASTWARD INTO THE PHILADELPHIA WILMINGTON AREA OVERNIGHT. THIS MAY RESULT IN RENEWED FLOODING BETWEEN 2 AM AND 8 AM FRIDAY. 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. && $$ NJZ001-007>010-012-PAZ054-055-060>062-191030- /O.CON.KPHI.FF.A.0007.110819T0800Z-110820T0200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-CARBON-MONROE- BERKS-LEHIGH-NORTHAMPTON- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...JIM THORPE... STROUDSBURG...READING...ALLENTOWN...BETHLEHEM...EASTON 1028 PM EDT THU AUG 18 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 4 AM EDT FRIDAY THROUGH FRIDAY EVENING... THE FLASH FLOOD WATCH CONTINUES FOR * PORTIONS OF NEW JERSEY AND PENNSYLVANIA...INCLUDING THE FOLLOWING AREAS...IN NEW JERSEY...HUNTERDON...MIDDLESEX... MORRIS...SOMERSET...SUSSEX AND WARREN. IN PENNSYLVANIA... BERKS...CARBON...LEHIGH...MONROE AND NORTHAMPTON. * FROM 4 AM EDT FRIDAY THROUGH FRIDAY EVENING * SHOWERS AND THUNDERSTORMS THROUGH FRIDAY EVENING ARE EXPECTED TO PRODUCE ONE HALF TO ONE INCH OF RAIN WITH LOCALIZED AMOUNTS OF TWO TO FOUR INCHES POSSIBLE. CONDITIONS IN OUR REGION ARE NEARLY SATURATED DUE TO THE RECENT RAINFALL. ANY ADDITIONAL HEAVY RAIN MAY LEAD TO LOCALIZED FLASH FLOODING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$ DRAG
738 WGUS61 KPHI 190757 FFAPHI FLOOD WATCH NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 357 AM EDT FRI AUG 19 2011 NJZ001-007>010-012-PAZ054-055-060>062-191800- /O.CON.KPHI.FF.A.0007.110819T0800Z-110820T0200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-CARBON-MONROE- BERKS-LEHIGH-NORTHAMPTON- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...JIM THORPE... STROUDSBURG...READING...ALLENTOWN...BETHLEHEM...EASTON 357 AM EDT FRI AUG 19 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THIS EVENING... 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... BERKS...CARBON...LEHIGH...MONROE AND NORTHAMPTON. * THROUGH THIS EVENING * SHOWERS AND THUNDERSTORMS WILL DEVELOP ACROSS THE AREA THIS AFTERNOON AND REMAIN INTO THE EVENING. THEY ARE EXPECTED TO PRODUCE ONE HALF TO ONE INCH OF RAIN WITH LOCALIZED AMOUNTS OF TWO TO FOUR INCHES POSSIBLE. CONDITIONS IN OUR REGION ARE NEARLY SATURATED DUE TO THE RECENT RAINFALL. ANY ADDITIONAL HEAVY RAIN MAY LEAD TO LOCALIZED FLASH FLOODING. 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. && $$ DEZ001-MDZ008-012-NJZ013>027-PAZ067>071-191800- /O.CON.KPHI.FF.A.0007.000000T0000Z-110820T1000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ NEW CASTLE-CECIL-KENT MD-WESTERN MONMOUTH-EASTERN MONMOUTH-MERCER- SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND- ATLANTIC-CAPE MAY-ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC- COASTAL OCEAN-SOUTHEASTERN BURLINGTON-CHESTER-MONTGOMERY-BUCKS- DELAWARE-PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...ELKTON...CHESTERTOWN... FREEHOLD...SANDY HOOK...TRENTON...PENNSVILLE...GLASSBORO... CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY...JACKSON... MILLVILLE...HAMMONTON...CAPE MAY COURT HOUSE...OCEAN CITY... ATLANTIC CITY...LONG BEACH ISLAND...WHARTON STATE FOREST... WEST CHESTER...NORRISTOWN...DOYLESTOWN...MEDIA...PHILADELPHIA 357 AM EDT FRI AUG 19 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT... THE FLASH FLOOD WATCH CONTINUES 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 AND KENT MD. IN NEW JERSEY...ATLANTIC... ATLANTIC COASTAL CAPE MAY...CAMDEN...CAPE MAY...COASTAL ATLANTIC...COASTAL OCEAN...CUMBERLAND...EASTERN MONMOUTH... GLOUCESTER...MERCER...NORTHWESTERN BURLINGTON...OCEAN... SALEM...SOUTHEASTERN BURLINGTON AND WESTERN MONMOUTH. IN SOUTHEAST PENNSYLVANIA...BUCKS...CHESTER...DELAWARE... MONTGOMERY AND PHILADELPHIA. * THROUGH LATE TONIGHT * SHOWERS AND THUNDERSTORMS WILL DEVELOP ACROSS THE AREA THIS AFTERNOON AND REMAIN THROUGH THE OVERNIGHT PERIOD. THEY ARE EXPECTED TO PRODUCE ONE HALF TO ONE INCH OF RAIN WITH LOCALIZED AMOUNTS OF TWO TO FOUR INCHES POSSIBLE. CONDITIONS IN OUR REGION ARE NEARLY SATURATED DUE TO THE RECENT RAINFALL. ANY ADDITIONAL HEAVY RAIN MAY LEAD TO LOCALIZED FLASH FLOODING. 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. && $$
503 WGUS61 KPHI 191356 FFAPHI FLOOD WATCH NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 956 AM EDT FRI AUG 19 2011 NJZ001-007>010-012-PAZ054-055-060>062-192200- /O.CON.KPHI.FF.A.0007.000000T0000Z-110820T0200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-CARBON-MONROE- BERKS-LEHIGH-NORTHAMPTON- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...JIM THORPE... STROUDSBURG...READING...ALLENTOWN...BETHLEHEM...EASTON 956 AM EDT FRI AUG 19 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THIS EVENING... 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... BERKS...CARBON...LEHIGH...MONROE AND NORTHAMPTON. * THROUGH THIS EVENING * SCATTERED THUNDERSTORMS WILL DEVELOP ACROSS THE AREA THIS AFTERNOON AND REMAIN INTO THIS EVENING. THEY ARE EXPECTED TO PRODUCE ONE HALF TO ONE INCH OF RAIN WITH LOCALIZED AMOUNTS OF TWO TO FOUR INCHES POSSIBLE. SOIL CONDITIONS IN OUR REGION ARE NEARLY SATURATED DUE TO RECENT HEAVY RAINFALL. ANY ADDITIONAL HEAVY RAIN MAY LEAD TO LOCALIZED FLASH FLOODING. 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. && $$ DEZ001-MDZ008-012-NJZ013>027-PAZ067>071-192200- /O.CON.KPHI.FF.A.0007.000000T0000Z-110820T1000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ NEW CASTLE-CECIL-KENT MD-WESTERN MONMOUTH-EASTERN MONMOUTH-MERCER- SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND- ATLANTIC-CAPE MAY-ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC- COASTAL OCEAN-SOUTHEASTERN BURLINGTON-CHESTER-MONTGOMERY-BUCKS- DELAWARE-PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...ELKTON...CHESTERTOWN... FREEHOLD...SANDY HOOK...TRENTON...PENNSVILLE...GLASSBORO... CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY...JACKSON... MILLVILLE...HAMMONTON...CAPE MAY COURT HOUSE...OCEAN CITY... ATLANTIC CITY...LONG BEACH ISLAND...WHARTON STATE FOREST... WEST CHESTER...NORRISTOWN...DOYLESTOWN...MEDIA...PHILADELPHIA 956 AM EDT FRI AUG 19 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT... THE FLASH FLOOD WATCH CONTINUES 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 AND KENT MD. IN NEW JERSEY...ATLANTIC... ATLANTIC COASTAL CAPE MAY...CAMDEN...CAPE MAY...COASTAL ATLANTIC...COASTAL OCEAN...CUMBERLAND...EASTERN MONMOUTH... GLOUCESTER...MERCER...NORTHWESTERN BURLINGTON...OCEAN... SALEM...SOUTHEASTERN BURLINGTON AND WESTERN MONMOUTH. IN SOUTHEAST PENNSYLVANIA...BUCKS...CHESTER...DELAWARE... MONTGOMERY AND PHILADELPHIA. * THROUGH LATE TONIGHT * SCATTERED TO NUMEROUS THUNDERSTORMS WILL DEVELOP ACROSS THE AREA THIS AFTERNOON AND REMAIN INTO THE OVERNIGHT PERIOD. THEY ARE EXPECTED TO PRODUCE ONE HALF TO ONE INCH OF RAIN WITH LOCALIZED AMOUNTS OF TWO TO FOUR INCHES POSSIBLE. SOIL CONDITIONS IN OUR REGION ARE NEARLY SATURATED DUE TO RECENT HEAVY RAINFALL. ANY ADDITIONAL HEAVY RAIN MAY LEAD TO LOCALIZED FLASH FLOODING. 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. && $$
188 WGUS61 KPHI 191908 FFAPHI FLOOD WATCH NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 308 PM EDT FRI AUG 19 2011 NJZ001-007>010-012-PAZ054-055-060>062-200200- /O.CON.KPHI.FF.A.0007.000000T0000Z-110820T0200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-CARBON-MONROE- BERKS-LEHIGH-NORTHAMPTON- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...JIM THORPE... STROUDSBURG...READING...ALLENTOWN...BETHLEHEM...EASTON 308 PM EDT FRI AUG 19 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 10 PM EDT THIS EVENING... THE FLASH FLOOD WATCH CONTINUES FOR * PORTIONS OF NEW JERSEY AND PENNSYLVANIA...INCLUDING THE FOLLOWING COUNTIES...IN NEW JERSEY...HUNTERDON...MIDDLESEX... MORRIS...SOMERSET...SUSSEX AND WARREN. IN PENNSYLVANIA... BERKS...CARBON...LEHIGH...MONROE AND NORTHAMPTON. * UNTIL 10 PM EDT THIS EVENING * SCATTERED THUNDERSTORMS WILL CONTINUE TO DEVELOP ACROSS THE AREA THIS AFTERNOON AND REMAIN INTO THIS EVENING. THEY ARE EXPECTED TO PRODUCE ONE HALF TO ONE INCH OF RAIN WITH LOCALIZED AMOUNTS OF TWO TO FOUR INCHES POSSIBLE. SOIL CONDITIONS IN OUR REGION ARE NEARLY SATURATED DUE TO RECENT HEAVY RAINFALL. ANY ADDITIONAL HEAVY RAIN MAY LEAD TO LOCALIZED FLASH FLOODING. 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. && $$ DEZ001-MDZ008-012-NJZ013>027-PAZ067>071-201000- /O.CON.KPHI.FF.A.0007.000000T0000Z-110820T1000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ NEW CASTLE-CECIL-KENT MD-WESTERN MONMOUTH-EASTERN MONMOUTH-MERCER- SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND- ATLANTIC-CAPE MAY-ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC- COASTAL OCEAN-SOUTHEASTERN BURLINGTON-CHESTER-MONTGOMERY-BUCKS- DELAWARE-PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...ELKTON...CHESTERTOWN... FREEHOLD...SANDY HOOK...TRENTON...PENNSVILLE...GLASSBORO... CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY...JACKSON... MILLVILLE...HAMMONTON...CAPE MAY COURT HOUSE...OCEAN CITY... ATLANTIC CITY...LONG BEACH ISLAND...WHARTON STATE FOREST... WEST CHESTER...NORRISTOWN...DOYLESTOWN...MEDIA...PHILADELPHIA 308 PM EDT FRI AUG 19 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT... THE FLASH FLOOD WATCH CONTINUES FOR * PORTIONS OF NORTHERN DELAWARE...NORTHEAST MARYLAND...NEW JERSEY AND SOUTHEAST PENNSYLVANIA...INCLUDING THE FOLLOWING COUNTIES...IN NORTHERN DELAWARE...NEW CASTLE. IN NORTHEAST MARYLAND...CECIL AND KENT. IN NEW JERSEY...ATLANTIC...ATLANTIC COASTAL CAPE MAY...CAMDEN...CAPE MAY...COASTAL ATLANTIC...COASTAL OCEAN...CUMBERLAND...EASTERN MONMOUTH... GLOUCESTER...MERCER...NORTHWESTERN BURLINGTON...OCEAN... SALEM...SOUTHEASTERN BURLINGTON AND WESTERN MONMOUTH. IN SOUTHEAST PENNSYLVANIA...BUCKS...CHESTER...DELAWARE... MONTGOMERY AND PHILADELPHIA. * THROUGH LATE TONIGHT * SCATTERED TO NUMEROUS THUNDERSTORMS WILL DEVELOP ACROSS THE AREA THIS AFTERNOON AND REMAIN INTO THE OVERNIGHT PERIOD. THEY ARE EXPECTED TO PRODUCE ONE HALF TO ONE INCH OF RAIN WITH LOCALIZED AMOUNTS OF TWO TO FOUR INCHES POSSIBLE. SOIL CONDITIONS IN OUR REGION ARE NEARLY SATURATED DUE TO RECENT HEAVY RAINFALL. ANY ADDITIONAL HEAVY RAIN MAY LEAD TO LOCALIZED FLASH FLOODING. 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. && $$
338 WGUS61 KPHI 192351 FFAPHI FLOOD WATCH NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 751 PM EDT FRI AUG 19 2011 NJZ001-007>010-012-PAZ054-055-060>062-200100- /O.CAN.KPHI.FF.A.0007.000000T0000Z-110820T0200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-CARBON-MONROE- BERKS-LEHIGH-NORTHAMPTON- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...JIM THORPE... STROUDSBURG...READING...ALLENTOWN...BETHLEHEM...EASTON 751 PM EDT FRI AUG 19 2011 ...FLASH FLOOD WATCH IS CANCELLED... THE FLASH FLOOD WATCH FOR PORTIONS OF NEW JERSEY AND PENNSYLVANIA HAS BEEN CANCELLED. $$ DEZ001-MDZ008-012-NJZ013>027-PAZ067>071-200100- /O.CAN.KPHI.FF.A.0007.000000T0000Z-110820T1000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ NEW CASTLE-CECIL-KENT MD-WESTERN MONMOUTH-EASTERN MONMOUTH-MERCER- SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND- ATLANTIC-CAPE MAY-ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC- COASTAL OCEAN-SOUTHEASTERN BURLINGTON-CHESTER-MONTGOMERY-BUCKS- DELAWARE-PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...ELKTON...CHESTERTOWN... FREEHOLD...SANDY HOOK...TRENTON...PENNSVILLE...GLASSBORO... CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY...JACKSON... MILLVILLE...HAMMONTON...CAPE MAY COURT HOUSE...OCEAN CITY... ATLANTIC CITY...LONG BEACH ISLAND...WHARTON STATE FOREST... WEST CHESTER...NORRISTOWN...DOYLESTOWN...MEDIA...PHILADELPHIA 751 PM EDT FRI AUG 19 2011 ...FLASH FLOOD WATCH IS CANCELLED... THE FLASH FLOOD WATCH FOR PORTIONS OF NORTHERN DELAWARE... NORTHEAST MARYLAND...NEW JERSEY AND SOUTHEAST PENNSYLVANIA HAS BEEN CANCELLED. $$
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 5:45 AM EDT | Special Weather Statement | PHI | Cecil | 60 min |
| Aug 18, 5:48 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 57 min |
| Aug 18, 6:04 PM EDT | Areal Flood Advisory | PHI | Cecil | 116 min |
| Aug 18, 2:57 AM EDT | Special Weather Statement | PHI | Berks | 63 min |
| Aug 18, 3:53 AM EDT | Special Weather Statement | PHI | Berks | 52 min |
| Aug 18, 4:48 AM EDT | Special Weather Statement | PHI | Chester, Montgomery | 57 min |
| Aug 18, 6:04 AM EDT | Special Weather Statement | PHI | Berks, Chester | 41 min |
| Aug 18, 6:35 AM EDT | Areal Flood Advisory | PHI | Berks, Bucks, Chester, Delaware, Lehigh, Montgomery and 2 more | 3 hr |
| Aug 18, 7:29 AM EDT | Special Weather Statement | PHI | Bucks, Delaware, Montgomery, Philadelphia | 61 min |
| Aug 18, 8:16 AM EDT | Special Weather Statement | PHI | Philadelphia | 59 min |
| Aug 18, 9:29 AM EDT | Areal Flood Advisory | PHI | Delaware | 2 hr |
| Aug 18, 5:30 PM EDT | Special Weather Statement | PHI | Monroe | 60 min |
| Aug 18, 6:18 PM EDT | Special Weather Statement | PHI | Chester | 57 min |
| Aug 18, 6:39 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 66 min |
| Aug 18, 6:59 PM EDT | Flash Flood Warning | PHI | Chester | 2 hr |
| Aug 18, 7:14 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware | 50 min |
| Aug 18, 7:28 PM EDT | Special Weather Statement | PHI | Chester | 62 min |
| Aug 18, 7:31 PM EDT | Special Weather Statement | PHI | Monroe | 59 min |
| Aug 18, 7:37 PM EDT | Severe Thunderstorm Warning | PHI | Delaware, Philadelphia | 53 min |
| Aug 18, 7:47 PM EDT | Areal Flood Advisory | PHI | Carbon, Monroe, Northampton | 3 hr |
| Aug 18, 7:58 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery | 31 min |
| Aug 18, 7:59 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Delaware, Montgomery, Philadelphia | 61 min |
| Aug 18, 4:53 AM EDT | Special Weather Statement | PHI | Morris, Somerset, Sussex | 52 min |
| Aug 18, 8:57 AM EDT | Areal Flood Advisory | PHI | Atlantic, Burlington, Camden, Cumberland, Gloucester, Monmouth and 1 more | 3 hr |
| Aug 18, 3:32 PM EDT | Special Weather Statement | PHI | Burlington | 58 min |
| Aug 18, 3:50 PM EDT | Areal Flood Advisory | PHI | Burlington, Camden | 51 min |
| Aug 18, 4:17 PM EDT | Special Weather Statement | PHI | Monmouth | 58 min |
| Aug 18, 4:55 PM EDT | Special Weather Statement | PHI | Burlington | 65 min |
| Aug 18, 5:20 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Monmouth, Ocean | 33 min |
| Aug 18, 6:12 PM EDT | Special Weather Statement | PHI | Middlesex | 63 min |
| Aug 18, 6:33 PM EDT | Special Weather Statement | PHI | Mercer | 57 min |
| Aug 18, 7:34 PM EDT | Special Weather Statement | PHI | Monmouth | 56 min |
| Aug 18, 7:43 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex, Warren | 62 min |
| Aug 18, 6:44 PM EDT | Special Weather Statement | PHI | New Castle | 61 min |
Nearby
Flash Flood Watches in New Jersey, 2011Flash Flood Watches in Pennsylvania, 2011Flash Flood Watches in Maryland, 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.