Alert archive / New Jersey / Flash Flood Watches in 2009

Flash Flood Watch 13, NWS Philadelphia/Mount Holly

December 8, 20094 states

NWS Philadelphia/Mount Holly issued this flash flood watch at Dec 8, 2009, 2:40 PM EST for 4 states. It took effect at Dec 9, 2009, 4:00 AM EST. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued
Dec 8, 2009, 2:40 PM EST (19:40 UTC)
In effect from
Dec 9, 2009, 4:00 AM EST
Expired
Dec 9, 2009, 11:53 AM EST
In force
8 hr
Issued by
NWS Philadelphia/Mount Holly
Flood severity
None
All 31 counties

Kent County, DE, New Castle County, DE, Sussex County, DE, Caroline County, MD, Cecil County, MD, Kent County, MD, Queen Anne's County, MD, Talbot 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), 67 km from the middle of the area, began a volume at 19:38 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, 7.7 hours before the alert went out and 94 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.

Skew-T log-pSkew-T log-p diagram, Phillips Aaf/Abe, MD at 12:00Z on 2009-12-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Phillips Aaf/Abe, MD at 12:00Z on 2009-12-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -162 square meters per square second.1939587897117136Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1288 m above ground
0-6 km bulk shear
79 kt
0-1 km storm-relative helicity
-162 m²/s²
0-3 km storm-relative helicity
-89 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS61 KPHI 081940
FFAPHI

URGENT - IMMEDIATE BROADCAST REQUESTED
FLOOD WATCH
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
240 PM EST TUE DEC 8 2009

...ONE TO THREE INCHES OF RAIN POSSIBLE LATE TONIGHT AND TOMORROW...

.STRONG LOW PRESSURE OVER THE MISSISSIPPI VALLEY WILL TRACK TOWARD 
THE GREAT LAKES TONIGHT BEFORE MOVING INTO CANADA TOMORROW. AN 
ASSOCIATED WARM FRONT WILL MOVE ACROSS OUR REGION TOMORROW MORNING. 
A COLD FRONT WILL THEN PASS THROUGH THE AREA TOMORROW EVENING. A 
PERIOD OF HEAVY PRECIPITATION IS EXPECTED WITH THESE FRONTAL SYSTEMS 
FROM LATE TONIGHT THROUGH LATE IN THE DAY TOMORROW.

NJZ001-007>010-012>015-PAZ054-055-060>062-067>071-090345-
/O.NEW.KPHI.FF.A.0013.091209T0900Z-091209T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-
WESTERN MONMOUTH-EASTERN MONMOUTH-MERCER-CARBON-MONROE-BERKS-
LEHIGH-NORTHAMPTON-CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA-
INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN...
FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...FREEHOLD...SANDY HOOK...
TRENTON...JIM THORPE...STROUDSBURG...READING...ALLENTOWN...
BETHLEHEM...EASTON...WEST CHESTER...NORRISTOWN...DOYLESTOWN...
MEDIA...PHILADELPHIA
240 PM EST TUE DEC 8 2009

...FLASH FLOOD WATCH IN EFFECT FROM LATE TONIGHT THROUGH
WEDNESDAY AFTERNOON...

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...
 EASTERN MONMOUTH...HUNTERDON...MERCER...MIDDLESEX...MORRIS...
 SOMERSET...SUSSEX...WARREN AND WESTERN MONMOUTH. IN 
 PENNSYLVANIA...BERKS...BUCKS...CARBON...CHESTER...DELAWARE...
 LEHIGH...MONROE...MONTGOMERY...NORTHAMPTON AND PHILADELPHIA.

* FROM LATE TONIGHT THROUGH WEDNESDAY AFTERNOON

* PRECIPITATION WILL START TO OVERSPREAD THE AREA FROM THE
  SOUTHWEST AFTER MIDNIGHT AND WILL BECOME HEAVY AT TIMES TOWARD
  DAYBREAK. THE PRECIPITATION WILL START OFF AS A WINTRY MIX
  ACROSS NORTHWESTERN NEW JERSEY, THE LEHIGH VALLEY, AND THE
  POCONOS. RAIN IS EXPECTED ELSEWHERE. A TRANSITION TO ALL RAIN IS
  EXPECTED SHORTLY AFTER SUNRISE TOMORROW. HEAVY RAIN IS THEN
  FORECAST TO CONTINUE THROUGH MUCH OF THE DAY. RAINFALL IS
  FORECAST TO AVERAGE ONE TO TWO INCHES, WITH SOME THREE INCH
  AMOUNTS POSSIBLE. 

* THE HEAVY RAIN COULD CAUSE FLOODING IN POOR DRAINAGE AREAS AND
  ALONG SMALL STREAMS AND CREEKS SUCH AS THE PERKIOMEN CREEK,
  BRANDYWINE CREEK, AND NESHAMINY CREEK ACROSS SOUTHEAST
  PENNSYLVANIA AND ALONG THE MILLSTONE RIVER AND ASSUNPINK CREEK
  IN CENTRAL NEW JERSEY. RAINFALL RATES MAY BE QUITE HIGH, ALSO
  RESULTING IN FLASH FLOODING. NO FLOODING IS EXPECTED ALONG 
  MAIN STEM RIVERS SUCH AS THE DELAWARE AND THE SCHUYLKILL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. IF YOU LIVE IN A LOCATION THAT IS PRONE TO
FLASH FLOODING, BE PREPARED TO TAKE ACTION IF A WARNING IS
ISSUED. IF YOU OBSERVE RAPIDLY RISING WATER, MOVE TO HIGHER
GROUND IMMEDIATELY.

DO NOT DRIVE THROUGH FLOOD WATERS. THE WATER MAY BE DEEPER THAN
YOU THINK IT IS.

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$

DEZ001>004-MDZ008-012-015-019-020-NJZ016>027-090345-
/O.NEW.KPHI.FF.A.0013.091209T0900Z-091209T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NEW CASTLE-KENT-INLAND SUSSEX-DELAWARE BEACHES-CECIL-KENT MD-
QUEEN ANNES-TALBOT-CAROLINE-SALEM-GLOUCESTER-CAMDEN-
NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-ATLANTIC-CAPE MAY-
ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-COASTAL OCEAN-
SOUTHEASTERN BURLINGTON-
INCLUDING THE CITIES OF...WILMINGTON...DOVER...GEORGETOWN...
REHOBOTH BEACH...ELKTON...CHESTERTOWN...CENTREVILLE...EASTON...
DENTON...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
240 PM EST TUE DEC 8 2009

...FLASH FLOOD WATCH IN EFFECT FROM LATE TONIGHT THROUGH
WEDNESDAY AFTERNOON...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A

* FLASH FLOOD WATCH FOR PORTIONS OF DELAWARE...NORTHEAST 
 MARYLAND AND SOUTHERN NEW JERSEY...INCLUDING THE FOLLOWING 
 AREAS...IN DELAWARE...DELAWARE BEACHES...INLAND SUSSEX...KENT 
 AND NEW CASTLE. IN NORTHEAST MARYLAND...CAROLINE...CECIL...
 KENT MD...QUEEN ANNES AND TALBOT. IN SOUTHERN NEW JERSEY...
 ATLANTIC...ATLANTIC COASTAL CAPE MAY...CAMDEN...CAPE MAY...
 COASTAL ATLANTIC...COASTAL OCEAN...CUMBERLAND...GLOUCESTER...
 NORTHWESTERN BURLINGTON...OCEAN...SALEM AND SOUTHEASTERN 
 BURLINGTON.

* FROM LATE TONIGHT THROUGH WEDNESDAY AFTERNOON

* PRECIPITATION WILL START TO OVERSPREAD THE AREA FROM THE
  SOUTHWEST AROUND MIDNIGHT AND WILL BECOME HEAVY AT TIMES WELL
  BEFORE DAYBREAK. RAINFALL IS FORECAST TO AVERAGE ONE TO TWO 
  INCHES, WITH SOME THREE INCH AMOUNTS POSSIBLE. THE RAIN WILL
  GRADUALLY TAPER OFF TOMORROW AFTERNOON. 

* THE HEAVY RAIN COULD CAUSE FLOODING ALONG SMALL STREAMS AND
  CREEKS AND IN AREAS OF POOR DRAINAGE. RAINFALL RATES MAY BE
  QUITE HIGH, ALSO RESULTING IN FLASH FLOODING. NO FLOODING IS
  EXPECTED ALONG MAIN STEM RIVERS SUCH AS THE DELAWARE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. IF YOU LIVE IN A LOCATION THAT IS PRONE TO
FLASH FLOODING, BE PREPARED TO TAKE ACTION IF A WARNING IS
ISSUED. IF YOU OBSERVE RAPIDLY RISING WATER, MOVE TO HIGHER
GROUND IMMEDIATELY.

DO NOT DRIVE THROUGH FLOOD WATERS. THE WATER MAY BE DEEPER THAN
YOU THINK IT IS.

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$

KRUZDLO
4 follow-up statements
000 
WGUS61 KPHI 090137
FFAPHI

FLOOD WATCH
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
837 PM EST TUE DEC 8 2009

...ONE TO THREE INCHES OF RAIN POSSIBLE LATE TONIGHT AND TOMORROW...

NJZ001-007>010-012>015-PAZ054-055-060>062-067>071-091000-
/O.CON.KPHI.FF.A.0013.091209T0900Z-091209T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-
WESTERN MONMOUTH-EASTERN MONMOUTH-MERCER-CARBON-MONROE-BERKS-
LEHIGH-NORTHAMPTON-CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA-
INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN...
FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...FREEHOLD...SANDY HOOK...
TRENTON...JIM THORPE...STROUDSBURG...READING...ALLENTOWN...
BETHLEHEM...EASTON...WEST CHESTER...NORRISTOWN...DOYLESTOWN...
MEDIA...PHILADELPHIA
837 PM EST TUE DEC 8 2009

...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 4 AM EST WEDNESDAY
THROUGH WEDNESDAY AFTERNOON...

THE FLASH FLOOD WATCH CONTINUES FOR

* PORTIONS OF NEW JERSEY AND PENNSYLVANIA...INCLUDING THE 
 FOLLOWING AREAS...IN NEW JERSEY...EASTERN MONMOUTH...
 HUNTERDON...MERCER...MIDDLESEX...MORRIS...SOMERSET...SUSSEX...
 WARREN AND WESTERN MONMOUTH. IN PENNSYLVANIA...BERKS...BUCKS...
 CARBON...CHESTER...DELAWARE...LEHIGH...MONROE...MONTGOMERY...
 NORTHAMPTON AND PHILADELPHIA.

* FROM 4 AM EST WEDNESDAY THROUGH WEDNESDAY AFTERNOON

* PRECIPITATION WILL START TO OVERSPREAD THE AREA FROM THE
  SOUTHWEST TONIGHT AND WILL BECOME HEAVY AT TIMES TOWARD
  DAYBREAK. THE PRECIPITATION WILL START OFF AS A WINTRY MIX
  ACROSS NORTHWESTERN NEW JERSEY...THE LEHIGH VALLEY AND THE
  POCONOS. RAIN IS EXPECTED ELSEWHERE. A TRANSITION TO ALL RAIN IS
  EXPECTED SHORTLY AFTER SUNRISE TOMORROW. HEAVY RAIN IS THEN
  FORECAST TO CONTINUE THROUGH MUCH OF THE DAY. RAINFALL IS
  FORECAST TO AVERAGE ONE TO TWO INCHES...WITH SOME THREE INCH
  AMOUNTS POSSIBLE.

* THE HEAVY RAIN COULD CAUSE FLOODING IN POOR DRAINAGE AREAS AND
  ALONG SMALL STREAMS AND CREEKS SUCH AS THE PERKIOMEN CREEK...
  BRANDYWINE CREEK...AND NESHAMINY CREEK ACROSS SOUTHEAST
  PENNSYLVANIA AND ALONG THE MILLSTONE RIVER AND ASSUNPINK CREEK
  IN CENTRAL NEW JERSEY. RAINFALL RATES MAY BE QUITE HIGH...ALSO
  RESULTING IN FLASH FLOODING. NO FLOODING IS EXPECTED ALONG MAIN
  STEM RIVERS SUCH AS THE DELAWARE AND THE SCHUYLKILL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. IF YOU LIVE IN A LOCATION THAT IS PRONE TO
FLASH FLOODING...BE PREPARED TO TAKE ACTION IF A WARNING IS
ISSUED. IF YOU OBSERVE RAPIDLY RISING WATER...MOVE TO HIGHER
GROUND IMMEDIATELY.

DO NOT DRIVE THROUGH FLOOD WATERS. THE WATER MAY BE DEEPER THAN
YOU THINK IT IS.

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$

DEZ001>004-MDZ008-012-015-019-020-NJZ016>027-091000-
/O.CON.KPHI.FF.A.0013.091209T0900Z-091209T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NEW CASTLE-KENT-INLAND SUSSEX-DELAWARE BEACHES-CECIL-KENT MD-
QUEEN ANNES-TALBOT-CAROLINE-SALEM-GLOUCESTER-CAMDEN-
NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-ATLANTIC-CAPE MAY-
ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-COASTAL OCEAN-
SOUTHEASTERN BURLINGTON-
INCLUDING THE CITIES OF...WILMINGTON...DOVER...GEORGETOWN...
REHOBOTH BEACH...ELKTON...CHESTERTOWN...CENTREVILLE...EASTON...
DENTON...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
837 PM EST TUE DEC 8 2009

...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 4 AM EST WEDNESDAY
THROUGH WEDNESDAY AFTERNOON...

THE FLASH FLOOD WATCH CONTINUES FOR

* PORTIONS OF DELAWARE...NORTHEAST MARYLAND AND SOUTHERN NEW
  JERSEY...INCLUDING THE FOLLOWING AREAS...IN DELAWARE...
  DELAWARE BEACHES...INLAND SUSSEX...KENT AND NEW CASTLE. IN
  NORTHEAST MARYLAND...CAROLINE...CECIL...KENT MD...QUEEN ANNES
  AND TALBOT. IN SOUTHERN NEW JERSEY...ATLANTIC...ATLANTIC COASTAL
  CAPE MAY...CAMDEN...CAPE MAY...COASTAL ATLANTIC... COASTAL
  OCEAN...CUMBERLAND...GLOUCESTER...NORTHWESTERN
  BURLINGTON...OCEAN...SALEM AND SOUTHEASTERN BURLINGTON.

* FROM 4 AM EST WEDNESDAY THROUGH WEDNESDAY AFTERNOON

* PRECIPITATION WILL START TO OVERSPREAD THE AREA FROM THE
  SOUTHWEST TONIGHT AND WILL BECOME HEAVY AT TIMES WELL BEFORE
  DAYBREAK. RAINFALL IS FORECAST TO AVERAGE ONE TO TWO INCHES...
  WITH SOME THREE INCH AMOUNTS POSSIBLE. THE RAIN WILL GRADUALLY
  TAPER OFF TOMORROW AFTERNOON.

* THE HEAVY RAIN COULD CAUSE FLOODING ALONG SMALL STREAMS AND
  CREEKS AND IN AREAS OF POOR DRAINAGE. RAINFALL RATES MAY BE
  QUITE HIGH...ALSO RESULTING IN FLASH FLOODING. NO FLOODING IS
  EXPECTED ALONG MAIN STEM RIVERS SUCH AS THE DELAWARE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. IF YOU LIVE IN A LOCATION THAT IS PRONE TO
FLASH FLOODING...BE PREPARED TO TAKE ACTION IF A WARNING IS
ISSUED. IF YOU OBSERVE RAPIDLY RISING WATER...MOVE TO HIGHER
GROUND IMMEDIATELY.

DO NOT DRIVE THROUGH FLOOD WATERS. THE WATER MAY BE DEEPER THAN
YOU THINK IT IS.

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$

KRUZDLO/MPD
000 
WGUS61 KPHI 090840
FFAPHI

FLOOD WATCH
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
340 AM EST WED DEC 9 2009

...ONE TO THREE INCHES OF RAIN POSSIBLE LATE TONIGHT AND
TOMORROW...

NJZ001-007>010-012>015-PAZ054-055-060>062-067>071-092300-
/O.CON.KPHI.FF.A.0013.091209T0900Z-091209T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-
WESTERN MONMOUTH-EASTERN MONMOUTH-MERCER-CARBON-MONROE-BERKS-
LEHIGH-NORTHAMPTON-CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA-
INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN...
FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...FREEHOLD...SANDY HOOK...
TRENTON...JIM THORPE...STROUDSBURG...READING...ALLENTOWN...
BETHLEHEM...EASTON...WEST CHESTER...NORRISTOWN...DOYLESTOWN...
MEDIA...PHILADELPHIA
340 AM EST WED DEC 9 2009

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THIS AFTERNOON...

THE FLASH FLOOD WATCH CONTINUES FOR

* PORTIONS OF NEW JERSEY AND PENNSYLVANIA...INCLUDING THE
  FOLLOWING AREAS...IN NEW JERSEY...EASTERN MONMOUTH...HUNTERDON...
  MERCER...MIDDLESEX...MORRIS...SOMERSET...SUSSEX...WARREN AND
  WESTERN MONMOUTH. IN PENNSYLVANIA...BERKS...BUCKS...
  CARBON...CHESTER...DELAWARE...LEHIGH...MONROE...MONTGOMERY...
  NORTHAMPTON AND PHILADELPHIA.

* THROUGH THIS AFTERNOON

* PRECIPITATION HAD CHANGED TO RAIN OVER MUCH OF THE AREA...BUT
  CONTINUED AS SNOW OR A WINTRY MIX WELL NORTH AND WEST OF
  PHILADELPHIA EARLY THIS MORNING. PRECIPITATION SHOULD BE RAIN
  OVER THE ENTIRE AREA BY SHORTLY AFTER DAYBREAK...AND THEN RAIN
  IS EXPECTED TO BE HEAVY AT TIMES THROUGH THE MORNING HOURS.
  RAINFALL IS FORECAST TO AVERAGE ONE TO TWO INCHES...WITH SOME
  THREE INCH AMOUNTS POSSIBLE.

* THE HEAVY RAIN COULD CAUSE FLOODING IN POOR DRAINAGE AREAS AND
  ALONG SMALL STREAMS AND CREEKS SUCH AS THE PERKIOMEN CREEK...
  BRANDYWINE CREEK...AND NESHAMINY CREEK ACROSS SOUTHEAST
  PENNSYLVANIA AND ALONG THE MILLSTONE RIVER AND ASSUNPINK CREEK
  IN CENTRAL NEW JERSEY. RAINFALL RATES MAY BE QUITE HIGH...ALSO
  RESULTING IN FLASH FLOODING. NO FLOODING IS EXPECTED ALONG MAIN
  STEM RIVERS SUCH AS THE DELAWARE AND THE SCHUYLKILL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. IF YOU LIVE IN A LOCATION THAT IS PRONE TO
FLASH FLOODING...BE PREPARED TO TAKE ACTION IF A WARNING IS
ISSUED. IF YOU OBSERVE RAPIDLY RISING WATER...MOVE TO HIGHER
GROUND IMMEDIATELY.

DO NOT DRIVE THROUGH FLOOD WATERS. THE WATER MAY BE DEEPER THAN
YOU THINK IT IS.

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$

DEZ001>004-MDZ008-012-015-019-020-NJZ016>027-092300-
/O.CON.KPHI.FF.A.0013.091209T0900Z-091209T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NEW CASTLE-KENT-INLAND SUSSEX-DELAWARE BEACHES-CECIL-KENT MD-
QUEEN ANNES-TALBOT-CAROLINE-SALEM-GLOUCESTER-CAMDEN-
NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-ATLANTIC-CAPE MAY-
ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-COASTAL OCEAN-
SOUTHEASTERN BURLINGTON-
INCLUDING THE CITIES OF...WILMINGTON...DOVER...GEORGETOWN...
REHOBOTH BEACH...ELKTON...CHESTERTOWN...CENTREVILLE...EASTON...
DENTON...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
340 AM EST WED DEC 9 2009

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THIS AFTERNOON...

THE FLASH FLOOD WATCH CONTINUES FOR

* PORTIONS OF DELAWARE...NORTHEAST MARYLAND AND SOUTHERN NEW
  JERSEY...INCLUDING THE FOLLOWING AREAS...IN DELAWARE... DELAWARE
  BEACHES...INLAND SUSSEX...KENT AND NEW CASTLE. IN NORTHEAST
  MARYLAND...CAROLINE...CECIL...KENT MD...QUEEN ANNES AND TALBOT.
  IN SOUTHERN NEW JERSEY...ATLANTIC...ATLANTIC COASTAL CAPE
  MAY...CAMDEN...CAPE MAY...COASTAL ATLANTIC...COASTAL OCEAN...
  CUMBERLAND...GLOUCESTER...NORTHWESTERN BURLINGTON...OCEAN...SALEM
  AND SOUTHEASTERN BURLINGTON.

* THROUGH THIS AFTERNOON

* RAIN WILL CONTINUE AND BE HEAVY AT TIMES THROUGH THE MORNING
  HOURS. RAINFALL IS FORECAST TO AVERAGE ONE TO TWO INCHES... WITH
  SOME THREE INCH AMOUNTS POSSIBLE. THE RAIN WILL GRADUALLY TAPER
  OFF TO SHOWERS THIS AFTERNOON.

* THE HEAVY RAIN COULD CAUSE FLOODING ALONG SMALL STREAMS AND CREEKS
  AND IN AREAS OF POOR DRAINAGE. RAINFALL RATES MAY BE QUITE
  HIGH...ALSO RESULTING IN FLASH FLOODING. NO FLOODING IS EXPECTED
  ALONG MAIN STEM RIVERS SUCH AS THE DELAWARE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. IF YOU LIVE IN A LOCATION THAT IS PRONE TO
FLASH FLOODING...BE PREPARED TO TAKE ACTION IF A WARNING IS
ISSUED. IF YOU OBSERVE RAPIDLY RISING WATER...MOVE TO HIGHER
GROUND IMMEDIATELY.

DO NOT DRIVE THROUGH FLOOD WATERS. THE WATER MAY BE DEEPER THAN
YOU THINK IT IS.

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$

KRUZDLO/MPD/RNS
000 
WGUS61 KPHI 090902
FFAPHI

FLOOD WATCH
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
402 AM EST WED DEC 9 2009


NJZ001-007-PAZ054-055-062-091015-
/O.CAN.KPHI.FF.A.0013.000000T0000Z-091209T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SUSSEX-WARREN-CARBON-MONROE-NORTHAMPTON-
INCLUDING THE CITIES OF...NEWTON...WASHINGTON...JIM THORPE...
STROUDSBURG...BETHLEHEM...EASTON
402 AM EST WED DEC 9 2009

...FLASH FLOOD WATCH IS CANCELLED...

THE FLASH FLOOD WATCH FOR PORTIONS OF NORTHERN NEW JERSEY AND
PENNSYLVANIA HAS BEEN CANCELLED. 

SNOW FALL OF 4 TO 6 INCHES IN THE HIGHER ELEVATIONS AND 2 TO 4
INCHES IN THE LOWER ELEVATIONS SHOULD BE ABLE TO ABSORB ANY HEAVY
RAIN THAT FALLS THIS MORNING AND SLOW RUNOFF SO THAT FLASH
FLOODING IS NOT LONGER EXPECTED.

$$

NJZ008>010-012>015-PAZ060-061-067>071-092300-
/O.CON.KPHI.FF.A.0013.000000T0000Z-091209T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-WESTERN MONMOUTH-
EASTERN MONMOUTH-MERCER-BERKS-LEHIGH-CHESTER-MONTGOMERY-BUCKS-
DELAWARE-PHILADELPHIA-
INCLUDING THE CITIES OF...MORRISTOWN...FLEMINGTON...SOMERVILLE...
NEW BRUNSWICK...FREEHOLD...SANDY HOOK...TRENTON...READING...
ALLENTOWN...WEST CHESTER...NORRISTOWN...DOYLESTOWN...MEDIA...
PHILADELPHIA
402 AM EST WED DEC 9 2009

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THIS AFTERNOON...

THE FLASH FLOOD WATCH CONTINUES FOR

* PORTIONS OF NEW JERSEY AND PENNSYLVANIA...INCLUDING THE 
 FOLLOWING AREAS...IN NEW JERSEY...EASTERN MONMOUTH...
 HUNTERDON...MERCER...MIDDLESEX...MORRIS...SOMERSET AND WESTERN 
 MONMOUTH. IN PENNSYLVANIA...BERKS...BUCKS...CHESTER...
 DELAWARE...LEHIGH...MONTGOMERY AND PHILADELPHIA.

* THROUGH THIS AFTERNOON

* PRECIPITATION HAD CHANGED TO RAIN OVER MUCH OF THE AREA...BUT 
 CONTINUED AS SNOW OR A WINTRY MIX WELL NORTH AND WEST OF 
 PHILADELPHIA EARLY THIS MORNING. PRECIPITATION SHOULD BE RAIN 
 OVER THE ENTIRE AREA BY SHORTLY AFTER DAYBREAK...AND THEN RAIN 
 IS EXPECTED TO BE HEAVY AT TIMES THROUGH THE MORNING HOURS. 
 RAINFALL IS FORECAST TO AVERAGE ONE TO TWO INCHES...WITH SOME 
 THREE INCH AMOUNTS POSSIBLE. 

* THE HEAVY RAIN COULD CAUSE FLOODING IN POOR DRAINAGE AREAS AND 
 ALONG SMALL STREAMS AND CREEKS SUCH AS THE PERKIOMEN CREEK... 
 BRANDYWINE CREEK...AND NESHAMINY CREEK ACROSS SOUTHEAST 
 PENNSYLVANIA AND ALONG THE MILLSTONE RIVER AND ASSUNPINK CREEK 
 IN CENTRAL NEW JERSEY. RAINFALL RATES MAY BE QUITE HIGH...ALSO 
 RESULTING IN FLASH FLOODING. NO FLOODING IS EXPECTED ALONG 
 MAIN STEM RIVERS SUCH AS THE DELAWARE AND THE SCHUYLKILL. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. IF YOU LIVE IN A LOCATION THAT IS PRONE TO
FLASH FLOODING...BE PREPARED TO TAKE ACTION IF A WARNING IS
ISSUED. IF YOU OBSERVE RAPIDLY RISING WATER...MOVE TO HIGHER
GROUND IMMEDIATELY.

DO NOT DRIVE THROUGH FLOOD WATERS. THE WATER MAY BE DEEPER THAN
YOU THINK IT IS.

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$

DEZ001>004-MDZ008-012-015-019-020-NJZ016>027-092300-
/O.CON.KPHI.FF.A.0013.000000T0000Z-091209T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NEW CASTLE-KENT-INLAND SUSSEX-DELAWARE BEACHES-CECIL-KENT MD-
QUEEN ANNES-TALBOT-CAROLINE-SALEM-GLOUCESTER-CAMDEN-
NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-ATLANTIC-CAPE MAY-
ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-COASTAL OCEAN-
SOUTHEASTERN BURLINGTON-
INCLUDING THE CITIES OF...WILMINGTON...DOVER...GEORGETOWN...
REHOBOTH BEACH...ELKTON...CHESTERTOWN...CENTREVILLE...EASTON...
DENTON...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
402 AM EST WED DEC 9 2009

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THIS AFTERNOON...

THE FLASH FLOOD WATCH CONTINUES FOR

* PORTIONS OF DELAWARE...NORTHEAST MARYLAND AND SOUTHERN NEW 
 JERSEY...INCLUDING THE FOLLOWING AREAS...IN DELAWARE...
 DELAWARE BEACHES...INLAND SUSSEX...KENT AND NEW CASTLE. IN 
 NORTHEAST MARYLAND...CAROLINE...CECIL...KENT MD...QUEEN ANNES 
 AND TALBOT. IN SOUTHERN NEW JERSEY...ATLANTIC...ATLANTIC 
 COASTAL CAPE MAY...CAMDEN...CAPE MAY...COASTAL ATLANTIC...
 COASTAL OCEAN...CUMBERLAND...GLOUCESTER...NORTHWESTERN 
 BURLINGTON...OCEAN...SALEM AND SOUTHEASTERN BURLINGTON.

* THROUGH THIS AFTERNOON

* RAIN WILL CONTINUE AND BE HEAVY AT TIMES THROUGH THE MORNING 
 HOURS. RAINFALL IS FORECAST TO AVERAGE ONE TO TWO INCHES... 
 WITH SOME THREE INCH AMOUNTS POSSIBLE. THE RAIN WILL GRADUALLY 
 TAPER OFF TO SHOWERS THIS AFTERNOON. 

* THE HEAVY RAIN COULD CAUSE FLOODING ALONG SMALL STREAMS AND 
 CREEKS AND IN AREAS OF POOR DRAINAGE. RAINFALL RATES MAY BE 
 QUITE HIGH...ALSO RESULTING IN FLASH FLOODING. NO FLOODING IS 
 EXPECTED ALONG MAIN STEM RIVERS SUCH AS THE DELAWARE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. IF YOU LIVE IN A LOCATION THAT IS PRONE TO
FLASH FLOODING...BE PREPARED TO TAKE ACTION IF A WARNING IS
ISSUED. IF YOU OBSERVE RAPIDLY RISING WATER...MOVE TO HIGHER
GROUND IMMEDIATELY.

DO NOT DRIVE THROUGH FLOOD WATERS. THE WATER MAY BE DEEPER THAN
YOU THINK IT IS.

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$
000 
WGUS61 KPHI 091653
FFAPHI

FLOOD WATCH
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1153 AM EST WED DEC 9 2009

DEZ001>004-MDZ008-012-015-019-020-NJZ008>010-012>027-PAZ060-061-
067>071-091800-
/O.CAN.KPHI.FF.A.0013.000000T0000Z-091209T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NEW CASTLE-KENT-INLAND SUSSEX-DELAWARE BEACHES-CECIL-KENT MD-
QUEEN ANNES-TALBOT-CAROLINE-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-
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-BERKS-LEHIGH-CHESTER-MONTGOMERY-BUCKS-
DELAWARE-PHILADELPHIA-
INCLUDING THE CITIES OF...WILMINGTON...DOVER...GEORGETOWN...
REHOBOTH BEACH...ELKTON...CHESTERTOWN...CENTREVILLE...EASTON...
DENTON...MORRISTOWN...FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...
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...
READING...ALLENTOWN...WEST CHESTER...NORRISTOWN...DOYLESTOWN...
MEDIA...PHILADELPHIA
1153 AM EST WED DEC 9 2009

...FLASH FLOOD WATCH IS CANCELLED...

THE FLASH FLOOD WATCH FOR PORTIONS OF DELAWARE...NORTHEAST
MARYLAND...NEW JERSEY AND PENNSYLVANIA HAS BEEN CANCELLED. 

HEAVY RAINFALL LAST NIGHT AND EARLY TODAY HAS PRODUCED FLOODING
ACROSS MUCH OF THE REGION. REFER TO THE LATEST FLOOD WARNINGS AND
STATEMENTS REGARDING THE ONGOING FLOODING. LITTLE PRECIPITATION IS
EXPECTED THE REST OF TODAY AND TONIGHT...SO THE FLOOD WATCH HAS
BEEN CANCELLED. 


$$

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 8, 2:52 AM ESTGale WatchPHI12 hr
Dec 8, 2:52 AM ESTGale WarningPHI4 days
Dec 8, 3:05 AM ESTWinter Weather AdvisoryPHIMorris, Sussex, Warren30 hr

Nearby

Flash Flood Watches in New Jersey, 2009Flash Flood Watches in Pennsylvania, 2009Flash Flood Watches in Maryland, 2009Every flash 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.